JP7785356B2 - Hair repair agent, hair treatment agent, and hair treatment method - Google Patents

Description

The present invention relates to a hair repair agent, a hair treatment agent, and a hair treatment method, and more specifically to a hair repair agent, a hair treatment agent, and a hair treatment method that have excellent hair repair effects.

In recent years, it has become common to treat hair using treatment agents such as hair colorants, bleaches, permanent wave agents, hair straighteners (hereinafter also referred to as straight perm agents), and treatment agents.

However, these treatments contain a variety of ingredients, including alkaline agents, oxidizing agents, and reducing agents, and some can cause some degree of chemical damage to treated hair. When hair is chemically damaged, it loses its luster, firmness, moisture, smoothness, and softness, making daily care more difficult and, depending on the extent of the damage, resulting in hair that is no longer visually appealing.

Furthermore, even if hair treatment is performed to achieve the desired effect despite damaging the hair, it does not necessarily mean that the desired effect will be achieved. The degree of effect of hair treatment varies depending on the hair type and condition of the person being treated, and the duration of the effect also varies.

In order to reduce individual differences in the degree of effect and duration of the treatment, those administering the treatment may fine-tune the hair treatment method for each individual, but it has been difficult to simultaneously prevent and repair hair damage and achieve the full effect of the hair treatment using the above-mentioned treatment agent.

Patent Document 1 proposes a hair treatment agent containing a hydrolyzed protein and an anionic compound.
It is stated that the pH of this hair treatment agent is preferably acidic, since an alkaline pH would cause the hair to swell.
However, there is room for further improvement in this hair treatment agent in terms of suppressing and repairing hair damage while enhancing the effects of treatment agents such as perms.

The inventor previously proposed a hair treatment method in Patent Document 2 that can enhance the effects of a treatment agent selected from a hair colorant, bleach, permanent wave agent, hair straightener, or treatment agent while suppressing and repairing hair damage.

JP 2015-86138 A WO2019/054446

The inventors furthered their research and mixed a hair repair agent [I] containing hydrolyzed protein and an anionic compound with a hair repair agent [II] containing low molecular weight keratin and medium molecular weight keratin, and applied it to the hair of model A. When the hair repair effect was evaluated, it was found that there was room for improvement in terms of firmness, shine, texture, taming frizz and volume, and taming frizz at the ends.

The object of the present invention is to provide a hair repair agent, hair treatment agent and hair treatment method that have excellent hair repair effects, such as improving firmness, shine, texture, taming frizz, reducing volume and reducing frizz at the ends.

Other objects of the present invention will become apparent from the following description.

The above problems are solved by the following inventions.

1.
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
A three-part mixed hair repair agent comprising a hair repair agent [III] containing at least one amino acid, wherein the three-part mixed hair repair agent is neutral to weakly alkaline.
2.
A hair repair method comprising applying the three-part mixed hair repair agent described in 1 above to hair.
3.
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
a three-part mixed hair repair agent obtained by mixing the hair repair agent [III] containing at least one amino acid and the three-part mixed hair repair agent [III] is neutral to weakly alkaline;
The four-component mixed hair treatment agent is characterized in that the three-component mixed hair repair agent is mixed with a treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent.
4.
A hair treatment method comprising applying the four-liquid mixed hair treatment composition described in 3 above to hair.
5.
A treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent is applied to the hair,
After a predetermined time has elapsed since application of the treatment agent [X],
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
A hair treatment method comprising applying to hair a neutral to weakly alkaline three-part mixed hair repair agent obtained by mixing the above-mentioned three-part mixed hair repair agent [III] with a hair repair agent [III] containing at least one amino acid.
6.
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
a three-part mixed hair repair agent obtained by mixing the hair repair agent [III] containing at least one amino acid and the three-part mixed hair repair agent [III] is neutral to weakly alkaline;
a four-component mixed hair treatment composition obtained by mixing the three-component mixed hair repair composition with a treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent, and applying the four-component mixed hair treatment composition to the hair;
After the application of the four-component mixed hair treatment agent containing the treatment agent [X], a predetermined time has elapsed.
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
A hair treatment method comprising applying to hair a neutral to weakly alkaline three-part mixed hair repair agent obtained by mixing a neutral to weakly alkaline three-part mixed hair repair agent [III] containing at least one amino acid.

The present invention provides a hair repair agent, hair treatment agent, and hair treatment method that have excellent hair repair effects, such as improving firmness, shine, texture, taming frizz, reducing volume, and reducing frizz at the ends.

The following provides a detailed description of the forms for implementing the present invention.

<First hair repair agent (three-liquid mixed hair repair agent) and hair repair method using same>
The first hair repair agent of the present invention is a neutral to weakly alkaline three-part mixed hair repair agent comprising a mixture of a hair repair agent [I], a hair repair agent [II], and a hair repair agent [III].

The mixing method is not particularly limited, and hair repair agent [I], hair repair agent [II], and hair repair agent [III] are added to a hair repair container simultaneously or sequentially, and then stirred and mixed with a stirrer or stirring rod.

1. Hair repair agent [I]
The hair repair agent [I] contains at least a hydrolyzed protein and an amino acid derivative.

The hydrolyzed protein in the hair repair agent [I] preferably includes hydrolyzed keratin and hydrolyzed collagen.

The hydrolyzed keratin contained in the hair repair agent [I] is not particularly limited, but examples include hydrolyzed keratin derived from wool, hydrolyzed keratin derived from feathers, hydroxypropyl hydrolyzed keratin, hydroxypropyltrimonium hydrolyzed keratin, etc.

The keratin contained in the hair repair agent [I] may be a single type of keratin or a mixture of multiple keratins. However, from the viewpoint of further enhancing the effects of the present invention, it is particularly preferable to use a mixture of multiple keratins.

When mixing multiple keratins, it is preferable that each keratin has a different weight-average molecular weight, and it is even more preferable to mix six or more types of keratin with different weight-average molecular weights. This can further enhance the effect of suppressing hair damage and repairing it.

The collagen contained in the hair repair agent [I] is not particularly limited, but examples include hydrolyzed collagen, isostearoyl hydrolyzed collagen AMPD, etc.

The collagen contained in the hair repair agent [I] may be a single type of collagen or a mixture of multiple collagens. However, from the perspective of further enhancing the effects of the present invention, it is particularly preferable to use a mixture of multiple collagens.

When mixing multiple collagens, it is preferable that the weight-average molecular weights of the collagens are different, and it is even more preferable to mix two or more types of collagen with different weight-average molecular weights. This can further enhance the effect of suppressing hair damage and repairing it.

The molecular size (weight-average molecular weight) of the ingredients contained in a hair treatment agent is important to optimally achieve the effects of reducing and repairing hair damage. This is because supplying keratin and collagen with weight-average molecular weights appropriate to the size and degree of damage in the hair can promote damage reduction and repair. Therefore, to achieve the effect of the present application, which is able to reduce and repair hair damage, it is preferable to select and combine keratin and collagen with different weight-average molecular weights depending on the repair details of the damaged hair areas.

The weight average molecular weights of keratin and collagen and their effects on hair are as follows:
(1) Weight-average molecular weight of several tens of thousands: Strengthening of hair fibers, film-forming properties, and firmness and resilience (2) Weight-average molecular weight of several thousands: Balance of firmness and softness (3) Weight-average molecular weight of several hundred: Promotion of softness and suppleness In particular, from the viewpoint of enhancing the effects of the treatment agent [X] described below, it is even more preferable to contain keratin and collagen with a weight-average molecular weight of several thousand.

In the present invention, the pH of the hair repair agent [I] during use can be around pH 6 (e.g., 5.5 to 6.0), which is acidic (weakly acidic), but is not limited to this. The pH can be adjusted to neutral or alkaline by adding an alkaline component such as arginine. This makes it easy to adjust the pH of the three-part mixed hair repair agent to neutral or weakly alkaline.

The hair repair agent [I] also contains an amino acid derivative, which preferably has the structure of glutamic acid.
Such amino acid derivatives include lysine dilauroyl glutamate, or salts of lysine dilauroyl glutamate such as sodium lysine dilauroyl glutamate and potassium lysine dilauroyl glutamate.

Dilauramidoglutamide lysine salt has a high repair function for hair and can enhance the effects of treatment agent [X] described below. Commercially available products of sodium dilauroyl glutamate lysine include "Pellicer L-30" manufactured by Asahi Kasei Chemicals Corporation.

It is also preferable that the hair repair agent [I] contains a foaming component. The inclusion of a foaming component allows the hair repair agent [I] to be applied to the hair in a foamy form, resulting in a uniform, even application, and efficient application to the entire hair even with a small amount of application. Furthermore, applying the agent in a foamy form is expected to improve the penetration rate of the hair repair agent [I] and the treatment agent [X] described below, thereby shortening the treatment time.

The foaming component is not particularly limited as long as it can foam the hair repair agent [I]. Anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, etc. can be used, but amphoteric surfactants are preferred from the standpoint of compatibility with the other components contained in the hair repair agent [I].

The hair repair agent [I] may contain other ingredients such as moisturizing ingredients and plant-derived extracts, etc., as appropriate, provided that the effects of the present invention are not impaired.

Preferred examples of moisturizing ingredients include betaine, urea, and sodium pyrrolidone carboxylate. While the moisturizing ingredient is not particularly limited, it is preferable to include multiple moisturizing ingredients in order to achieve effective moisturizing. By achieving effective moisturizing, hair after the hair treatment of the present invention will have enhanced shine, firmness, moisture, smoothness, softness, and the effectiveness of the treatment agent.

Examples of plant-derived extracts include Centella asiatica extract, Japanese knotweed root extract, Scutellaria root extract, licorice root extract, tea leaf extract, chamomile flower extract, rosemary leaf extract, and soybean seed extract.

The hair repair agent [I] may also contain water, ethanol, glycerin, dipropylene glycol, PCA isostearate PEG-40 hydrogenated castor oil, gelatin, TEA-cocoyl glutamate, sodium lauraminopropionate, alanine, glycine, arginine, EDTA-2 sodium, phenoxyethanol, propylparaben, methylparaben, fragrances, etc., as appropriate, within the scope of the present invention, without impairing the effects of the present invention.

The hair repair agent [I] of the present invention preferably contains, for example, 10 to 80 parts by weight of hydrolyzed keratin, 10 to 80 parts by weight of hydrolyzed collagen, and 1 to 50 parts by weight of sodium dilauroyl glutamate lysine, assuming a total weight of 100 parts by weight.

2. Hair repair agent [II]
The hair repair agent [II] contains at least a low-molecular-weight keratin, a medium-molecular-weight keratin, and an amino acid derivative.

The hair repair agent [II] used in the present invention is a blend of low molecular weight keratin and medium molecular weight keratin.

It is preferable that the low molecular weight keratin in the hair repair agent [II] is keratin having a weight average molecular weight of 300 to 500, and the medium molecular weight keratin is keratin having a weight average molecular weight of 3000 to 5000.

The hair repair agent [II] may contain a pH adjuster to adjust it to alkaline.

In the hair repair agent [II], the content is preferably, for example, 10 to 80 parts by weight of low molecular weight keratin and 10 to 80 parts by weight of medium molecular weight keratin, assuming the total weight of the two components is 100 parts by weight.

The keratin contained in hair repair agent [II] is a mixture of low molecular weight and medium molecular weight keratin.

The weight-average molecular weight of the ingredients contained in a hair treatment product is important for optimal hair damage prevention and repair effects. By supplying keratin with a weight-average molecular weight appropriate to the size and degree of damage in the hair, damage prevention and repair can be promoted.

Therefore, in order to achieve the effect of the present application, which is to suppress and repair hair damage, keratins with different weight-average molecular weights are selected and combined depending on the repair content of the damaged parts of the hair.

The weight average molecular weight of keratin and its effect on hair are as described above.

By using a mixture of keratins with different weight-average molecular weights, it is possible to supply keratin appropriate to the size and degree of damage to the hair, effectively repairing the damaged areas. As a result, the present invention can be achieved by suppressing and repairing hair damage while enhancing the effectiveness of treatment agent [X] selected from hair colorants, bleaches, permanent wave agents, hair straighteners, and treatment agents.

Hair repair agent [II] contains one type each of low molecular weight keratin and medium molecular weight keratin, and may also contain additional keratin with a weight average molecular weight other than the above.

Furthermore, the pH of the hair repair agent [II] can be alkaline, preferably around pH 10 (weakly alkaline). The alkaline component is preferably the basic amino acid arginine. Arginine is also a type of amino acid naturally contained in hair, and is therefore preferred because it can promote the supply of keratin without burdening the hair or scalp, and can also provide moisturizing properties to the hair.

The hair repair agent [II] also contains an amino acid derivative, which preferably has the structure of glutamic acid.
Such amino acid derivatives include lysine dilauroyl glutamate, or salts of lysine dilauroyl glutamate such as sodium lysine dilauroyl glutamate and potassium lysine dilauroyl glutamate.

Dilauramidoglutamide lysine salt has a high repair function for hair and can enhance the effects of treatment agent [X] described below. Commercially available products of sodium dilauroyl glutamate lysine include "Pellicer L-30" manufactured by Asahi Kasei Chemicals Corporation.

It is also preferable that the hair repair agent [II] contains a foaming component. The inclusion of a foaming component allows the hair repair agent [II] to be applied to the hair in a foamy form, resulting in a uniform, even application, and efficient application to the entire hair even with a small amount of application. Furthermore, applying the agent in a foamy form is expected to improve the penetration rate of the hair repair agent [II] and the treatment agent [X] described below, thereby shortening the treatment time.

The foaming component is not particularly limited as long as it can foam the hair repair agent [II]. Anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, etc. can be used, but amphoteric surfactants are preferred from the viewpoint of compatibility with the other components contained in the hair repair agent [II].

The hair repair agent [II] may contain other ingredients, such as moisturizing ingredients, as appropriate, within the scope of the invention, so long as the effects are not impaired.

Preferred examples of moisturizing ingredients include betaine, urea, sodium pyrrolidone carboxylate, etc. The moisturizing ingredient is not particularly limited, but it is preferable to contain multiple moisturizing ingredients in order to achieve effective moisturizing.

The hair repair agent [II] may also contain water, glycerin, dipropylene glycol, lauramidopropyl betaine, phenoxyethanol, methylparaben, etc., as appropriate, within the scope that does not impair the effects of the present invention.

3. Hair repair agent [III]
The hair repair agent [III] contains at least one amino acid.
For example, amino acids include arginine, aspartic acid, glycine, alanine, serine, valine, proline, threonine, isoleucine, histidine, asparagine, cysteine, glutamine, glutamic acid, leucine, lysine, methionine, phenylalanine, tryptophan, and tyrosine.

Arginine dilates blood vessels, smoothing blood flow and also has a moisturizing effect.
Aspartic acid has the effect of preventing rough scalp skin and also combines with ammonia to form asparagine.
Glycine is the smallest amino acid found in large amounts in collagen and has the effect of enhancing the penetration of the hair repair agent [I].
Alanine has the effect of enhancing the penetration of the hair repair agent [I].
Serine has the effect of increasing flexibility and elasticity, and also has a moisturizing effect.
Paline has a moisturizing effect and also has the effect of increasing the elasticity of the scalp.
Proline has a moisturizing effect.
Threonine (Threonine) is a skin protectant and also has moisturizing effects.
Isoleucine is found in large amounts in hair, has excellent moisturizing properties, and has the powerful effect of providing moderate flexibility to the scalp and hair.
Histidine has a moisturizing effect and also has a hair repair effect by preventing dryness of hair.
Asparagine has a moisturizing effect.
Cysteine strengthens the protein structure and has the effect of improving the hardness and strength of hair.
Glutamine has a moisturizing effect.
Glutamic acid has a moisturizing effect and also has the effect of softening the skin and hair.
Leucine has a moisturizing effect.
Lysine has a moisturizing effect and also has the effect of increasing the flexibility and elasticity of the scalp.
Methionine has a moisturizing effect and also promotes scalp and hair growth.
Phenylalanine has a moisturizing effect.
Tryptophan has a moisturizing effect and also acts as an antioxidant for oils and fats.
Tyrosine has a moisturizing effect and can also be used as an emulsion stabilizer.

The amino acids contained in the hair repair agent [III] are preferably three or more selected from the above amino acids, more preferably five or more, and particularly preferably ten or more.

In addition to the amino acids mentioned above, hair repair agent [III] may contain water, cyclomethicone, cetanol, dimethicone, glycerin, steartrimonium chloride, aminopropyl dimethicone, xylityl glycoside, anhydrous xylitol, xylitol, hydrolyzed keratin, amodimethicone, dicocodimonium chloride, ceteth-20, PCA-Na, sodium lactate, phenylalanine, di(phytosteryl/octyldodecyl) lauroyl glutamate, hydrogenated lecithin, trehalose, guar hydroxypropyltrimonium chloride, dihydroxypropylarginine HCl, methylparaben, propylparaben, methylisothiazoline, fragrance, etc.

In addition to the above amino acids, the hair repair agent [III] may also contain water, dimethicone, cyclomethicone, cetanol, glycerin, steartrimonium chloride, rice bran sphingoglycolipid, hydrogenated lecithin, lysolecithin, aminopropyl dimethicone, guar hydroxypropyltrimonium chloride, methylisothiazoline, methylchloroisothiazolinone, fragrances, etc.

Furthermore, the pH of the hair repair agent [III] can be neutral to alkaline, preferably about pH 7 to 10.

4. Hair Repair Method The hair repair method using the first hair repair agent involves mixing the above-mentioned hair repair agent [I], the above-mentioned hair repair agent [II], and the above-mentioned hair repair agent [III] to obtain a neutral to weakly alkaline three-part mixed hair repair agent, and applying the mixture to hair.

By using the three-component mixed hair repair agent of the present invention as described above, application time can be saved compared to conventional methods of applying hair repair agent [I] to the hair and then hair repair agent [II] to the hair, and it also has excellent hair repair effects, such as improving firmness, shine, texture, taming frizz, reducing volume, and reducing frizz at the ends.

The reason why such an effect is exhibited is not clear, but it is presumed that an effect that would not be exhibited by simply mixing hair repair agent [I] and hair repair agent [II] is exhibited by mixing hair repair agent [III] together.
That is, it is thought that at least one amino acid contained in the hair repair agent [III] acts on the hair repair agent [I] and the hair repair agent [II], and that this acts in a manner similar to the technology known as rinse-in shampoo.
The technology of rinse-in shampoo is based on the fact that rinse is a cationic surfactant (positive ionic surfactant) and shampoo is an anionic surfactant (negative ionic surfactant), so simply mixing the rinse and shampoo would cancel each other out. However, by using a cationic polymer with a large molecular weight as the rinse component, the shampoo components act on the hair and scalp first, and then the rinse components act on the hair, taking advantage of the time difference to achieve the effects of both.

In the present invention, it is presumed that the effects that would not be exhibited well by simply mixing the hair repair agent [I] and the hair repair agent [II] are exhibited by also mixing the hair repair agent [III], and that the effects that would be cancelled out by simply mixing the hair repair agent [I] and the hair repair agent [II] alone are exhibited by the hair repair agent [III] containing at least one amino acid, taking advantage of a time lag, like a rinse-in shampoo.
Alternatively, it is presumed that the effect of at least one amino acid is exerted by allowing the repair components of the hair repair agent [I] and the hair repair agent [II] to immediately penetrate into the interior of the hair before they are mixed together and cancel each other out.

Furthermore, because the three-part mixed hair repair agent is neutral to weakly alkaline, it is thought that the repair ingredients penetrate deeper into the hair more quickly than with acidic repair agents. This is because alkalinity has the effect of stripping the hair cuticle (damaging the hair), so by deliberately applying an alkaline repair agent, which is thought to damage hair, it is thought that the openings through which the repair ingredients can penetrate the hair are widened, allowing the repair ingredients to penetrate deeper into the hair more quickly. This effect is more pronounced with a weakly alkaline agent than with a neutral agent.

In this way, the hair repair agent [I], the hair repair agent [II], and the hair repair agent [III] work together to repair the hair, thereby achieving early neutralization of the hair.
Hair that has undergone hair treatments can suffer some chemical damage, which is caused by exposure to alkaline components. For example, treatments such as hair colorants, bleaches, permanent wave agents, and straighteners are alkaline because they swell the hair and allow the treatment agents to penetrate deep into the hair.
In this field, it has generally been thought that alkaline substances swell the hair and drive the nutrients within the hair out of the hair.
Therefore, hairdressers and barbers apply repair agents to neutralize the hair as quickly as possible after treatment.
However, even if repair agents are applied, it is difficult to completely neutralize the hair, and the alkaline state often persists for several days. The longer the alkaline state persists, the more hair damage such as dryness and breakage occurs.
The three-part mixed hair repair agent of the present invention can achieve early neutralization of hair.
Neutralization time varies depending on the individual, but can be achieved within 20 to 50 minutes.
This effect is even more pronounced when treating hair with a four-part mixed hair treatment composition containing the treatment agent [X] described below.

Furthermore, when it comes to hair damage, hair damage often involves damage to the inside of the hair, which is also called chemical damage or qualitative damage.
This type of damage is said to be caused by damage to the matrix (interstitial substance) inside the hair caused by chemicals such as perms and colorants.
Most internal damage is caused by the loss or deterioration of the matrix. When the matrix is lost, the fibers become separated, making the hair more susceptible to split ends, and at the same time, it can cause dryness due to the loss of moisturizing ingredients in the hair.
Perms and coloring exert their effects mainly by acting on the matrix, but damaged hair has drawbacks such as being difficult to perm, difficult to dye, and quick fading of color.
Restoring the matrix cannot be achieved with silicone or oils, so a very effective method is to infiltrate components that repair the matrix into the hair.
The present invention is extremely useful in that it allows nutrients to penetrate into the interior of the hair quickly and allows damage to the hair to be quickly repaired.

<Second hair repair agent (four-part mixed hair treatment agent) and hair treatment method using same>
The second hair repair agent of the present invention is a four-component mixed hair treatment agent obtained by mixing a three-component mixed hair repair agent [I], a hair repair agent [II], and a hair repair agent [III], which is neutral to weakly alkaline, and mixing the three-component mixed hair repair agent with a treatment agent [X].

The mixing method is not particularly limited, and may be such that hair repair agent [I], hair repair agent [II], hair repair agent [III] and treatment agent [X] are added to a hair repair container simultaneously, or hair repair agent [I], hair repair agent [II] and hair repair agent [III] are mixed, and the mixture is added to treatment agent [X], followed by stirring and mixing with a stirrer or stirring rod.

1. Hair repair agent [I]
The hair repair agent [I] constituting the second hair repair agent of the present invention contains at least a hydrolyzed protein and an amino acid derivative, and is the same as the hair repair agent [I] constituting the first hair repair agent of the present invention described above. Therefore, the explanations of those agents will be incorporated herein and will not be repeated here.

2. Hair repair agent [II]
The hair repair agent [II] constituting the second hair repair agent of the present invention contains at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative, and is the same as the hair repair agent [II] constituting the first hair repair agent of the present invention described above. Therefore, the description of those agents will be incorporated herein and will not be repeated here.

3. Hair repair agent [III]
The hair repair agent [III] constituting the second hair repair agent of the present invention contains at least 10 kinds of amino acids and is the same as the hair repair agent [III] constituting the first hair repair agent of the present invention described above, and therefore the description thereof will be incorporated herein and will not be repeated here.

4. Treatment agent [X]
The treatment agent [X] constituting the second hair repair agent of the present invention is selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightener, or a treatment agent.

The treatment agent [X] is not particularly limited as long as it is a treatment agent that can perform the desired hair treatment, and may be a commercially available product. Note that commercially available treatment agents are products that are intended for users to treat their hair themselves, and contain a large amount of oil to prevent the scalp and hair from drying out, so a treatment agent that does not contain a large amount of oil is preferable.
When a commercially available product is used as the treatment agent [X], commonly available hair coloring agents, bleaching agents, permanent wave agents, and hair straighteners can be used as they are because they are alkaline.
When using a commercially available treatment agent, it is preferable to add an alkaline agent to make it alkaline, since commercially available treatment agents are usually acidic.
The alkaline agent is not particularly limited, but arginine and the like can be preferably used.
When a permanent wave agent is used as the treatment agent [X], it is preferable to dilute it before mixing with the hair repair agent [I], the hair repair agent [II], and the hair repair agent [III]. This delays the rate of neutralization and allows for the desired permanent.

5. Hair Treatment Method The hair repair method (hair treatment method) using the second hair repair agent comprises mixing the above-mentioned hair repair agent [I], the above-mentioned hair repair agent [II], and the above-mentioned hair repair agent [III] to prepare a three-part mixed hair repair agent that is neutral to weakly alkaline, and mixing the three-part mixed hair repair agent with a treatment agent [X] to obtain a four-part mixed hair treatment agent, which is then applied to hair.

When the four-component mixed hair treatment composition according to the present invention is used as described above, it is possible to save time in application and treatment compared to the conventional method of applying hair repair agent [I] to the hair, then applying treatment agent [X] to the hair, and then applying hair repair agent [II] to the hair, and it also has an excellent hair repair effect of improving firmness, shine, texture, taming frizz, reducing volume, and reducing frizz at the ends.
Furthermore, the hair itself is repaired due to the hair repair effect, and therefore the effect of hair treatment with the treatment agent is improved.
Furthermore, as mentioned above, it is also possible to achieve the effect of quickly neutralizing alkaline hair.

The treating agent [X] is alkaline. In the art, it has generally been thought that alkaline substances swell the hair and expel nutrients from the hair.
Therefore, it was common practice to neutralize the hair with an acid rinse or the like after treating the hair with an alkaline treatment agent [X].

According to this embodiment, after application of the four-component mixed hair treatment agent, the pH of the hair, which is on the alkaline side, is maintained at neutral without the use of a substance with a pH adjusting effect, and therefore neutralization treatment using an acid rinse is not necessary. This makes it possible to suppress and repair damage to the hair while enhancing the effects of treatment agent [X].
In addition, the hair has a good repair effect, improving firmness, shine, texture, taming frizz, reducing volume, and reducing frizz at the ends.

The reason why the present embodiment exhibits such an effect is presumed to be as follows.
When an acidic hair treatment agent [I] containing a hydrolyzed protein such as keratin and an amino acid derivative having a glutamic acid structure, such as sodium dilauramidoglutamine lysine, an alkaline hair repair agent [II] containing low-molecular-weight keratin and medium-molecular-weight keratin and an amino acid derivative having a glutamic acid structure, such as sodium dilauramidoglutamine lysine, a neutral to alkaline hair repair agent [III] containing at least one amino acid, and, for example, an alkaline treatment agent [X] such as a hair dye (hair coloring agent) are mixed, the mixture is alkaline.
When the mixture is applied to hair, its alkaline components open the hair cuticle, allowing hydrogen peroxide (H ₂ O ₂ ) and dye to penetrate into the hair. The hydrogen peroxide breaks down the melanin pigment, bleaching the hair. At the same time, the dye, which is initially colorless, bonds with oxygen, developing color and dyeing the hair.
The molecules that make up the oxidized dye stick together, making them larger and less likely to escape through the gaps in the cuticle to the outside of the hair.
However, this condition is assumed to be caused by the alkaline pH of the hair due to the alkaline mixed solution, which can leave the cuticle open and damage the hair.
However, with the mixed solution of this embodiment, the effects that cannot be satisfactorily achieved by simply mixing the hair repair agent [I] and the hair repair agent [II] are achieved by also mixing the hair repair agent [III]. The effects that would be cancelled out by simply mixing the hair repair agent [I] and the hair repair agent [II] alone are achieved by the hair repair agent [III], which contains at least one amino acid, by utilizing a time lag, like a rinse-in shampoo. As a result, when the hair surface is open due to the alkaline pH of the hair, the repair actions of the hair repair agent [I] and the hair repair agent [II] do not cancel each other out, and they promote early penetration into the interior of the hair, thereby achieving the effect of quickly expressing the self-repairing ability of the hair itself.
The self-repairing ability of hair itself is quickly expressed, allowing for early neutralization (pH). Neutralization time varies depending on the individual, but can be achieved within 20 to 50 minutes.
Furthermore, when a hair dye (hair coloring agent) is used as the treatment agent [X], it is presumed that hydrogen peroxide, which can have adverse effects on hair, is also sufficiently removed based on the state of the hair after treatment.

The above describes the preferred embodiments of the present invention. However, in a hair repair method using a three-component mixed hair repair agent, it is also a preferred embodiment to apply the above-mentioned three-component mixed hair repair agent to the hair and then apply treatment agent [X] to the hair.
It is also a preferred embodiment to apply the three-liquid mixed hair repair agent multiple times after treating the hair with the treatment agent [X]. The repair effect increases by applying the agent multiple times.

Furthermore, in a hair treatment method using a four-component mixed hair treatment agent, it is also a preferred embodiment to apply the above-mentioned three-component mixed hair repair agent to the hair, and then apply a four-component mixed hair treatment agent containing treatment agent [X] to the hair.
In this case, it is also a preferred embodiment to apply the three-component hair repair agent multiple times after treating the hair with the four-component hair treatment agent containing the treatment agent [X].

The hair repair method of the present invention is not limited to this. For example, a separate pre-treatment agent may be used before the treatment of the present invention, or a separate post-treatment agent may be used after the treatment of the present invention. In this case, the pre-treatment agent or post-treatment agent may be any one of hair repair agent [I], hair repair agent [II], or hair repair agent [III], or one or more of these may be selected and used in combination.

In the present invention, the method of applying the three-component hair repair agent or four-component hair treatment agent is not particularly limited, and it can be applied in foam, liquid, milk, gel, cream, etc. Application in foam is particularly preferred from the viewpoints of achieving uniform application without unevenness and efficient application to the entire hair with a small amount of application.

The three-component hair repair agent or four-component hair treatment agent may be applied as is (as is) or diluted with water or other liquids. The undiluted solution is preferred for achieving the desired repair effect.

<Other hair repair methods (1)>
Another hair repair method (1) of the present invention includes applying a treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent to hair;
After a predetermined time has elapsed since application of the treatment agent [X],
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
and a hair repair agent [III] containing at least one amino acid, and then applying to the hair a neutral to weakly alkaline three-part mixed hair repair agent.

Hair repair agent [I] contains at least a hydrolyzed protein and an amino acid derivative, and is the same as the hair repair agent [I] constituting the first hair repair agent of the present invention described above. Therefore, the description of those agents will be incorporated herein and will not be repeated here.

Furthermore, hair repair agent [II] contains at least low molecular weight keratin, medium molecular weight keratin, and an amino acid derivative, and is the same as the hair repair agent [II] constituting the first hair repair agent of the present invention described above, so the description of those agents will be incorporated herein and will not be repeated here.

Furthermore, hair repair agent [III] contains at least one amino acid and is the same as the hair repair agent [III] constituting the first hair repair agent of the present invention described above, so the explanations therefor will be incorporated by reference and will not be repeated here.

Furthermore, the treatment agent [X] is selected from a hair coloring agent, bleaching agent, permanent wave agent, hair straightening agent, or treatment agent, and is the same as the treatment agent [X] constituting the second hair repair agent of the present invention described above, so the description thereof will be incorporated herein and will not be repeated here.

Another hair repair method (1) of the present invention is characterized in that the treatment agent [X] is applied to the hair and then a predetermined time is allowed to pass after the application.
Here, the predetermined time is the time it takes for hair treatment with the treatment agent [X] to be completed.
Hair treatment agents are often adjusted to an alkaline level that swells the hair, allowing the treatment ingredients to penetrate deep into the hair.
Therefore, conventional wisdom in hair treatment has been that hairdressers and barbers who treat hair try to finish the treatment in a short time to avoid damaging the hair as much as possible.

In this case, because the hair treatment is completed in a short time, the treatment ingredients do not fully penetrate the hair, and the hair treatment is not necessarily as desired. However, the reality is that hairdressers and barbers accept a situation where the treatment effect is reduced and complete the hair treatment in a short time, rather than causing serious damage to the hair itself that is difficult to repair. Severe damage to the hair itself that makes it difficult to repair is an extremely serious problem.

Another hair repair method of the present invention is characterized in that the hair treatment time with treatment agent [X] is longer than usual.

In the case of hair coloring agents, they are generally washed off in about 20 to 40 minutes, but in the other hair repair method of the present invention, the three-liquid mixed hair repair agent is applied to the hair after about 25 to 50 minutes have passed.
In the case of bleach, it is generally washed off in about 10 to 30 minutes, but in the other hair repair method of the present invention, the three-liquid mixed hair repair agent is applied to the hair after about 15 to 40 minutes have passed.
In the case of permanent wave agents, they are generally washed out after about 5 to 30 minutes, but in the other hair repair method of the present invention, the three-liquid mixed hair repair agent is applied to the hair after about 10 to 40 minutes have passed.
In the case of a hair straightener, it is generally washed off after about 5 to 30 minutes, but in the other hair repair method of the present invention, the three-liquid mixed hair repair agent is applied to the hair after about 10 to 40 minutes have passed.

The other hair repair methods of the present invention extend the treatment time by approximately 1.2 to 2 times compared to conventional treatment times, allowing the treatment ingredients to penetrate deep into the hair, completing the desired hair treatment while achieving a high hair repair effect.

<Other hair repair methods (2)>
Further, another hair repair method of the present invention includes:
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
a neutral to weakly alkaline three-part mixed hair repair agent obtained by mixing a hair repair agent [III] containing at least one amino acid;
a four-component mixed hair treatment composition obtained by mixing the three-component mixed hair repair composition with a treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent, and applying the four-component mixed hair treatment composition to the hair;
After the application of the four-component mixed hair treatment agent containing the treatment agent [X], a predetermined time has elapsed.
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
and a hair repair agent [III] containing at least 10 kinds of amino acids, and then applying to the hair a neutral to weakly alkaline three-part mixed hair repair agent.

Another hair repair method (2) of the present invention is an embodiment of another hair repair method (1) of the present invention, in which a four-part mixed hair treatment agent containing a mixture of hair repair agent [I], hair repair agent [II], hair repair agent [III], and treatment agent [X] is used instead of treatment agent [X].
This embodiment is also characterized in that the four-liquid mixed hair treatment agent is applied to the hair and then allowed to stand for a predetermined time.

The hair repair agent [I], hair repair agent [II], hair repair agent [III] and treatment agent [X] used are the same as those used in the other hair repair methods (1) of the present invention, and therefore the same descriptions are incorporated herein.

In the other hair repair method (2) of the present invention, by extending the treatment time by approximately 1.2 to 2 times compared to the general treatment time, it is possible to thoroughly penetrate the treatment ingredients into the hair, complete the desired hair treatment, and achieve a high hair repair effect.

It is also possible to apply the four-component mixed hair treatment agent to the hair, and after a predetermined time has passed since application, rinse off the four-component mixed hair treatment agent before applying the three-component mixed hair repair agent, which is the first hair repair agent, to the hair. However, from the perspective of keeping the hair repair ingredients in the hair at all times, it is preferable to apply the three-component mixed hair repair agent, which is the first hair repair agent, to the hair without rinsing it off.

The following describes examples of the present invention, but the present invention is not limited to these examples.

Example 1
1. Preparation of Three-Part Mixed Hair Repair Agent A hair repair agent was prepared as follows.

(3-liquid mixed hair repair agent 1)
A mixture of 5 g of the undiluted hair repair agent [I] and 15 g of water was mixed with 5 g of the undiluted hair repair agent [II] and 50 g of the hair repair agent [III] to prepare a three-part mixed hair repair agent 1.
The hair repair agent [I] was a liquid containing multiple types of keratin, multiple types of collagen, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2. The pH was about 6.
The hair repair agent [II] was a liquid containing keratin having a weight-average molecular weight of 300, keratin having a weight-average molecular weight of 3000, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2. The pH was about 8.
The hair repair agent [III] contained water, arginine, aspartic acid, threonine, serine, taurine, alanine, glycine, and glutamic acid, and was in a cream form. The pH was about 7.
The three-part mixed hair repair agent 1 was neutral to weakly alkaline.

(3-liquid mixed hair repair agent 2)
A three-part mixed hair repair agent 2 was prepared in the same manner as in the above hair repair agent 1, except that the amount of the hair repair agent [I] was changed to 5 g of the original solution.
The three-component mixed hair repair agent 2 was neutral to weakly alkaline.

(3-liquid mixed hair repair agent 3)
A three-part mixed hair repair agent 3 was prepared in the same manner as in the hair repair agent 1, except that the amount of the hair repair agent [I] was changed to 7 g of the original solution and the amount of the hair repair agent [II] was changed to 3 g of the original solution.
The three-component mixed hair repair agent 3 was neutral to weakly alkaline.

(3-liquid mixed hair repair agent 4)
Three-part mixed hair repair agent 4 was prepared in the same manner as in the hair repair agent 1, except that the amount of hair repair agent [I] was changed to 3 g of the original solution and the amount of hair repair agent [II] was changed to 7 g of the original solution.
The three-component mixed hair repair agent 4 was neutral to weakly alkaline.

(Comparative Hair Repair Agent 1)
Comparative hair repair agent 1 was prepared in the same manner as in the three-component mixed hair repair agent 4, except that the hair repair agent [III] was not added and mixed.

2. Hair Treatment Model A's hair was treated with the three-liquid mixed hair repair agents 1 to 4 and the comparative hair repair agent 1. Model A's hair was slightly frizzy and dry due to the bleach.

3. Evaluation The hair repair effect was evaluated for the following evaluation items based on the following evaluation criteria, and the results are shown in Table 1.
(1) Evaluation was carried out on five items: [Firmness], [Shine], [Feel], [Control of frizz and volume], and [Control of frizz at the ends]. The results are shown in Table 1.
(2) Evaluation criteria [Firmness]
⊚: Firm and bouncy, the best.
◯: Moderate firmness and good.
△: Normal firmness.
×: No firmness or elasticity, poor quality.
[Gloss]
⊚: Shiny and the best.
◯: The gloss is moderate and good.
△: Normal gloss.
×: No gloss and poor.
[Texture]
⊚: Feels very good to the touch, the best.
◯: Feels good to the touch and is good.
△: Normal feel.
×: The texture is poor and poor.
[Tame frizzy hair and reduce volume]
⊚: The curls and volume are controlled, and it is the best.
Good: The frizz and volume are somewhat tamed, which is good.
△: Some curls and some volume, but normal.
×: Curly hair, volume is not controlled, poor.
[Reduces frizz at the ends of hair]
⊚: No frizz at the tip of the bristles is observed, and this is the best.
Good: No frizz at the tip of the bristles is observed, and the condition is good.
△: There is some frizz at the ends of the hair, but it is normal.
×: The tip of the bristles is frizzy and is poor.

Table 1 shows that the three-liquid mixed hair repair agents 1, 2, 3, and 4 exhibit better repair effects than the comparative hair repair agent 1.

It was found that the three-part mixed hair repair agent 2 had an even better repair effect than the others. This is presumably due to the fact that both hair repair agent [I] and hair repair agent [II] are undiluted and mixed in equal amounts.

Example 2
1. Preparation of Three-Part Mixed Hair Repair Agent A three-part mixed hair repair agent was prepared as follows.

(3-liquid mixed hair repair agent 5)
In the hair repair agent 2 of Example 1, 1 g of the undiluted hair repair agent [I], 1 g of the undiluted hair repair agent [II], and 10 g of the hair repair agent [III] were mixed to prepare a three-part mixed hair repair agent 5.
The three-component mixed hair repair agent 5 was neutral to weakly alkaline.

(3-liquid mixed hair repair agent 6)
Three-part mixed hair repair agent 6 was prepared in the same manner as in Hair Repair Agent 5, except that hair repair agent [I] was changed to 2.5 g of the original solution and hair repair agent [II] was changed to 2.5 g of the original solution.
The three-component mixed hair repair agent 6 was neutral to weakly alkaline.

(3-liquid mixed hair repair agent 7)
Three-part mixed hair repair agent 7 was prepared in the same manner as in Hair Repair Agent 5, except that hair repair agent [I] was changed to 5 g of the original solution and hair repair agent [II] was changed to 5 g of the original solution.
The three-component mixed hair repair agent 7 was neutral to weakly alkaline.

(3-liquid mixed hair repair agent 8)
A three-part mixed hair repair agent 8 was prepared in the same manner as in the hair repair agent 5, except that the amount of hair repair agent [III] was changed to 50 g.
The three-component mixed hair repair agent 8 was neutral to weakly alkaline.

2. Hair Treatment Model B's hair was treated with the three-liquid mixed hair repair agents 5 to 8. The hair treatment was performed on the same hair in different locations.

3. Evaluation The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria, and the results are shown in Table 2.

From Table 2, it can be seen that the three-liquid mixed hair repair agents 5 to 8 exerted the hair repair effects of improving firmness, shine, texture, reducing frizz and volume, and reducing frizz at the ends of the hair.
Furthermore, the results in Table 2 show that when the blending ratio of the hair repair agent [I] and the hair repair agent [II] is lower than that of the hair repair agent [III], the repair effect decreases.

Example 3
1. Preparation of four-part mixed hair treatment agent A four-part mixed hair treatment agent was prepared as follows.

(Four-liquid mixed hair treatment agent 1)
A hair colorant (pH about 10) was used as treatment agent [X], and 80 g of the hair colorant was mixed with 3 g of undiluted hair repair agent [I], 3 g of undiluted hair repair agent [II], and 20 g of hair repair agent [III] to form a neutral to weakly alkaline three-component mixed hair repair agent, thereby preparing four-component mixed hair treatment agent 1.
The hair repair agents [I], [II] and [III] all had the same composition as the three-part mixed hair repair agent of Example 1.

(Four-liquid mixed hair treatment agent 2)
Four-component mixed hair treatment composition 2 was prepared in the same manner as in the four-component mixed hair treatment composition 1, except that the hair repair agent [I] was changed to 4 g of the undiluted solution, the hair repair agent [II] was changed to 4 g of the undiluted solution, and the hair repair agent [III] was changed to 30 g.

(Four-liquid mixed hair treatment agent 3)
Four-component mixed hair treatment composition 3 was prepared in the same manner as in the four-component mixed hair treatment composition 1, except that the hair repair agent [I] was changed to 5 g of the undiluted solution, the hair repair agent [II] was changed to 5 g of the undiluted solution, and the hair repair agent [III] was changed to 50 g.

2. Hair Treatment Model C's hair was treated with the four-liquid mixed hair treatment agents 1, 2, and 3. The hair treatment was performed on the same hair at different locations.

3. Evaluation The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
In addition, after the four-liquid mixed hair treatment agent was applied to the hair, the time required for the hair to be neutralized was measured.
The results are shown in Table 3.

From Table 3, it can be seen that the four-liquid mixed hair repair agents 1, 2, and 3 exerted hair repair effects such as firmness, shine, texture, taming frizz and volume, and taming frizzy ends.
Furthermore, it was found that even though the hair coloring agent has a pH of about 10, the hair was neutralized in about 30 to 45 minutes.
Furthermore, when the hair was observed after the treatment, it was confirmed that the hair color did not progress. This is presumably because the hydrogen peroxide contained in the coloring agent had been sufficiently removed and did not remain inside the hair.

Example 4
1. Preparation of four-part mixed hair treatment agent A four-part mixed hair treatment agent was prepared as follows.

(Four-part mixed hair treatment agent 4)
A straight perm agent (pH about 12) was used as treatment agent [X], and 100 g of the straight perm agent was mixed with 3 g of undiluted hair repair agent [I], 3 g of undiluted hair repair agent [II], and 5 g of hair repair agent [III] to form a neutral to weakly alkaline three-component mixed hair repair agent, thereby preparing four-component mixed hair treatment agent 4.
The hair repair agents [I], [II] and [III] all had the same composition as the three-part mixed hair repair agent of Example 1.

(Four-part mixed hair treatment agent 5)
Four-component mixed hair treatment composition 5 was prepared in the same manner as the four-component mixed hair treatment composition 4, except that the hair repair agent [I] was changed to 4 g of the undiluted solution, the hair repair agent [II] was changed to 4 g of the undiluted solution, and the hair repair agent [III] was changed to 10 g.

(Four-part mixed hair treatment agent 6)
Four-component mixed hair treatment composition 6 was prepared in the same manner as the four-component mixed hair treatment composition 4, except that the hair repair agent [I] was changed to 5 g of the undiluted solution, the hair repair agent [II] was changed to 5 g of the undiluted solution, and the hair repair agent [III] was changed to 20 g.

(Four-part mixed hair treatment agent 7)
Four-component mixed hair treatment agent 7 was prepared in the same manner as the four-component mixed hair treatment agent 4, except that 2 g of hair repair agent [I] was replaced with a solution diluted with 8 g of water (4-fold dilution), and the hair repair agent [II] was changed to 2 g of the original solution, and the hair repair agent [III] was changed to 20 g.

2. Hair Treatment Model D's hair was treated with the four-liquid mixed hair treatment agents 4, 5, 6, and 7. The hair treatment was performed on the same hair at different locations.

3. Evaluation The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
In addition, after the four-liquid mixed hair treatment agent was applied to the hair, the time required for the hair to be neutralized was measured.
The results are shown in Table 4.

Table 4 shows that the four-component mixed hair repair agents 4, 5, 6, and 7 have the effect of repairing hair, such as increasing firmness, shine, texture, reducing frizz and volume, and reducing frizz at the ends.

Furthermore, it was found that the four-component mixed hair repair agents 4, 5, and 6 neutralized hair in approximately 20 to 45 minutes, even though the straight perm agent had a pH of about 12. Furthermore, it was found that the neutralization time was shorter when using the undiluted hair repair agent [I] compared to the four-component mixed hair repair agent 7.

Example 5
1. Hair treatment method using a longer treatment time than usual A bleaching agent (pH about 12) was used as the treatment agent [X], and hair repair agent 2 in Example 1 was used as the hair repair agent.
The bleach was applied to the hair of Model E and left for about 30 minutes. After that, the bleach was washed off, and Hair Repair Agent 2 in Example 1 was applied to the hair.

2. Hair Treatment Method Using Normal Treatment Time A bleaching agent (pH about 12) was used as the treatment agent [X], and hair repair agent 2 in Example 1 was used as the hair repair agent.
The bleaching agent was applied to the hair of Model E and left for about 20 minutes. After that, the bleaching agent was washed off, and Hair Repair Agent 2 in Example 1 was applied to the hair.

The hair treatment was performed on the same hair in different locations.

The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
The results of the hair treatment were also evaluated.
The results are shown in Table 5.

From Table 5, it can be seen that the hair treatment method for a longer treatment time than the normal treatment method has a hair repair effect, such as firmness, gloss, texture, taming of frizz and volume, and taming of frizz at the ends, compared to the hair treatment method for a normal treatment time. It can also be seen that the desired bleaching is achieved, making it an excellent hair treatment method.
The inventors of the present invention confirmed similar results in experiments using a straightening permanent agent and a permanent agent.

Example 6
1. Hair treatment method using a longer treatment time than normal A straight perm agent (pH about 12) was used as treatment agent [X]. 100 g of the straight perm agent was mixed with 5 g of undiluted hair repair agent [I], 5 g of undiluted hair repair agent [II], and 50 g of hair repair agent [III] to form a neutral to weakly alkaline three-part mixed hair repair agent, thereby preparing a four-part mixed hair treatment agent.
The hair repair agent [I], the hair repair agent [II] and the hair repair agent [III] all had the same composition as the three-part mixed hair repair agent 2 in Example 1.
The four-part mixed hair treatment agent was applied to the hair of model F and left to stand for about 35 minutes. The four-part mixed hair treatment agent was then rinsed off, and hair repair agent 2 of Example 1 was applied to the hair.

2. Hair treatment method using normal treatment time A straight perm agent (pH about 12) was used as treatment agent [X]. 100 g of the straight perm agent was mixed with 5 g of undiluted hair repair agent [I], 5 g of undiluted hair repair agent [II], and 50 g of hair repair agent [III] to form a neutral to weakly alkaline three-part mixed hair repair agent, thereby preparing a four-part mixed hair treatment agent.
The hair repair agent [I], the hair repair agent [II] and the hair repair agent [III] all had the same composition as the three-part mixed hair repair agent 2 in Example 1.
The four-part mixed hair treatment agent was applied to the hair of model F and left to stand for about 20 minutes. The four-part mixed hair treatment agent was then rinsed off, and hair repair agent 2 of Example 1 was applied to the hair.

The hair treatment was performed on the same hair in different locations.

The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
The results of the hair treatment were also evaluated.
The results are shown in Table 6.

From Table 6, it can be seen that the hair treatment method with a longer treatment time than the normal treatment method has a hair repair effect, such as firmness, gloss, texture, taming of frizz and volume, and taming of frizz at the ends, compared to the hair treatment method with the normal treatment time. It can also be seen that frizzy hair is firmly straightened, making it an excellent hair treatment method.
The inventors have confirmed similar results in experiments using straightening agents and perm agents.

Example 7
Model G's hair was in a very damaged condition, completely lacking in elasticity, strength, and luster, and was noticeably dry and brittle. It also felt very rough to the touch and suffered from a lot of breakage. The hair was treated with hair repair agent 2 of Example 1.
The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
As a result, it was confirmed that the product had the effect of improving firmness, shine, texture, taming frizz, reducing volume, and reducing frizz at the ends of hair.

Model G had tried several commercially available treatments on her own hair, but found that they had no repair effect whatsoever. However, by treating her hair with the hair repair agent of the present invention, it was confirmed that even hair in a condition that cannot be repaired with ordinary repair agents could be given firmness, shine, texture, tamed frizz, volume, and frizziness at the ends of the hair.

(Example 8)
1. Preparation of Three-Part Mixed Hair Repair Agent A hair repair agent was prepared as follows.

(3-liquid mixed hair repair agent 9)
5 g of the undiluted hair repair agent [I], 5 g of the undiluted hair repair agent [II], and 50 g of the hair repair agent [III] were mixed to prepare three-component mixed hair repair agent 9.
The hair repair agent [I] was liquid and contained multiple types of keratin, multiple types of collagen, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2.
The hair repair agent [II] was liquid and contained keratin having a weight-average molecular weight of 300, keratin having a weight-average molecular weight of 3000, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2.
The hair repair agent [III] contains water, arginine, aspartic acid, threonine, serine, taurine, alanine, glycine, and glutamic acid, and is in cream form.
The pH of the three-component mixed hair repair agent 9 was weakly alkaline, about 7 to 8.

(3-liquid mixed hair repair agent 10)
Citric acid was further added to the three-part mixed hair repair agent 9 to prepare a three-part mixed hair repair agent 10.
The pH of the three-component mixed hair repair agent 10 was about 6, which was weakly acidic.

2. Hair Treatment The hair of model H after shampooing was repaired using the obtained three-liquid mixed hair repair agents 9 and 10. The hair repair was performed simultaneously on the same hair at different locations.

3. Evaluation The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
As a result, it was confirmed that the three-component mixed hair repair agent 9 had the same effects as hair repair agent 2 in Example 1 in terms of firmness, shine, texture, taming frizz, reducing volume, and reducing frizz at the ends.
In contrast, the three-liquid mixed hair repair agent 10 gave gloss, but it was confirmed that the hair spread a little overall, and the ends of the hair spread a little and got caught.
This is presumably due to the pH of the three-component mixed hair repair agent. That is, compared to the three-component mixed hair repair agent 10, which is weakly alkaline, the alkaline component of the three-component mixed hair repair agent 9 can open the hair cuticle, allowing the contained hair nutrients to penetrate more quickly.

Example 9
1. Preparation of Four-Part Mixed Hair Treatment Agent A four-part mixed hair treatment agent was prepared as follows.

(Four-part mixed hair treatment agent 8)
A hair colorant (pH about 10) was used as treatment agent [X], and 80 g of the hair colorant was mixed with 2 g of undiluted hair repair agent [I], 2 g of undiluted hair repair agent [II], and 20 g of hair repair agent [III] to form a neutral to weakly alkaline three-component mixed hair repair agent, thereby preparing four-component mixed hair treatment agent 8.
The hair repair agents [I], [II] and [III] all had the same composition as the three-part mixed hair repair agent of Example 1.
The pH of the four-component mixed hair treatment agent 8 was weakly alkaline, about 7 to 8.

(Four-part mixed hair treatment agent 9)
Citric acid was further added to the four-part mixed hair treatment agent 8 to prepare four-part mixed hair treatment agent 9.
The pH of the four-part mixed hair treatment agent 9 was about 6, which was weakly acidic.

2. Hair Treatment Model I was treated with the four-liquid mixed hair treatment agents 8 and 9. The hair treatment was carried out simultaneously on the same hair in different locations.

3. Evaluation The hair repair effect was evaluated for the same evaluation items as in Example 1 based on the same evaluation criteria.
As a result, it was confirmed that the four-liquid mixed hair treatment agent 8 exerted the effects of improving firmness, shine, texture, taming frizz and volume, and reducing frizz at the ends of the hair. It was also confirmed that breakage became less noticeable. Furthermore, it was confirmed that the colorant also dyed the hair very well.
In contrast, the four-liquid mixed hair repair agent 9 improved the feel of the hair, but although it had some shine, it was a dull shine, the ends of the hair spread out a little, there was some noticeable breakage, and it was confirmed that the colorant did not dye the hair well.
This is presumably due to the pH of the four-part mixed hair treatment agent. That is, compared to the four-part mixed hair repair agent 9, which is weakly alkaline, the alkaline component of the four-part mixed hair treatment agent 8 opens the hair cuticle, allowing the contained hair nutrients and coloring agent ingredients to penetrate more quickly.

Example 10
1. Preparation of Three-Part Mixed Hair Repair Agent A hair repair agent was prepared as follows.

(Three-liquid mixed hair repair agent 11)
5 g of the undiluted hair repair agent [I], 5 g of the undiluted hair repair agent [II], and 30 g of the hair repair agent [III] were mixed to prepare a three-part mixed hair repair agent 11.
The hair repair agent [I] was liquid and contained multiple types of keratin, multiple types of collagen, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2.
The hair repair agent [II] was liquid and contained keratin having a weight-average molecular weight of 300, keratin having a weight-average molecular weight of 3000, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2.
The hair repair agent [III] contains water, arginine, aspartic acid, threonine, serine, taurine, alanine, glycine, and glutamic acid, and is in cream form.
The pH of the three-part mixed hair repair agent 11 was neutral.
The three-liquid mixed hair repair agent 11 was used as an after-bath treatment (a leave-in treatment).

(Comparative hair repair agent)
I used an after-bath treatment from another company. The after-bath treatment from another company is weakly acidic and contains a lot of regular oils.

2. Hair Treatment Model J's hair was repaired using the three-component mixed hair repair agent 11 and an after-bath treatment from another company. The hair repair was performed simultaneously on different parts of the same hair. The hair repair was applied to wet hair after shampooing.

3. Evaluation: (1) Immediately after application, (2) the morning of application, (3) the evening of application, (4) after shampooing on the second day, and (5) one week later, the hair was observed.
The results were as follows:

"3-liquid mixed hair repair agent 11"
(1) Immediately after application: No stickiness. It felt like the treatment had penetrated into the hair. After that, when the hair was dried, it was confirmed that it was manageable.
(2) On the morning of application: Feels good to the touch.
(3) In the evening of the day of application: Hair breakage was not noticeable.
(4) After shampooing on the second day, the hair felt soft. The inside of the hair felt moisturized, and it was confirmed that the hair was well-manageable.
(5) After one week: Good results were confirmed for the same evaluation items as in Example 1. It was also confirmed that the condition of the hair improved as time passed after application.

"An after-bath treatment made by another company"
(1) Immediately after application: There is a feeling that oil remains on the surface, and the hair feels heavy. This is thought to be due to the fact that commercially available out-of-bath treatments made by other manufacturers contain ordinary oils.
(2) On the morning of application, there was a shine. This was also thought to be due to the oil.
(3) In the evening of the day of application: The hair was shiny, but breakage was becoming more noticeable.
(4) After shampooing on the second day: There was no difference in gloss compared to the three-liquid mixed hair repair agent 11. It was confirmed that hair breakage was noticeable.
(5) After one week: No change in the condition of the hair was observed compared to immediately after application.

From the above evaluation, it can be seen that commercially available out-of-bath treatments made by other companies that contain regular oils can make hair manageable and shiny immediately after application due to their oil components, but over time they cause dryness and noticeable breakage.
In contrast, it was confirmed that the three-liquid mixed hair repair agent of the present invention gradually improved the condition of the hair as time passed after application.

Example 11
1. Preparation of Three-Part Mixed Hair Repair Agent A hair repair agent was prepared as follows.

(Three-liquid mixed hair repair agent 12)
4 g of the undiluted hair repair agent [I], 4 g of the undiluted hair repair agent [II], and 12 g of the hair repair agent [III] were mixed, and a small amount of arginine was further added to prepare a three-part mixed hair repair agent 12.
The hair repair agent [I] was liquid and contained multiple types of keratin, multiple types of collagen, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2.
The hair repair agent [II] was liquid and contained keratin having a weight-average molecular weight of 300, keratin having a weight-average molecular weight of 3000, and sodium dilauroyl glutamate lysine in a weight ratio of 1:1:0.2.
The hair repair agent [III] contains water, arginine, aspartic acid, threonine, serine, taurine, alanine, glycine, and glutamic acid, and is in cream form.
The pH of the three-part mixed hair repair agent 11 was slightly alkaline.

(Three-component mixed hair repair agent 13)
The three-component mixed hair repair agent 12 without the additional arginine was designated as three-component mixed hair repair agent 13.
The pH of the three-part mixed hair repair agent 13 was neutral.

2. Hair Treatment Model K's hair was repaired using the three-component mixed hair repair agent 12 and the three-component mixed hair repair agent 13. The hair repairs were performed simultaneously on different parts of the same hair. The hair repair agents were applied to wet hair after shampooing.
Model L was also subjected to similar hair repair.

3. Evaluation (Model K)
The three-liquid mixed hair repair agent 12, which was further mixed with arginine, was confirmed to have a sense of immediate absorption immediately after application. Also, on the second day, it was confirmed that the hair was glossy. Furthermore, after one week, good results were confirmed for the same evaluation items as in Example 1.
The three-component mixed hair repair agent 13, which did not contain any additional arginine, caused the hair to tangle slightly in the hands immediately after application, but after one week, good results were confirmed for the same evaluation items as in Example 1.

(Model L)
It was confirmed that the three-liquid mixed hair repair agent 12, which was further mixed with arginine, reduced hair frizz, gave good shine, and helped to control frizz and breakage three days after application.
Three-component mixed hair repair agent 13, which did not contain any additional arginine, did not achieve as good a reduction in hair frizz as three-component mixed hair repair agent 12 on the third day after application, but otherwise had the same effect as three-component mixed hair repair agent 12.

The above evaluations show that the three-component mixed hair repair agents 12 and 13 are neutral to slightly alkaline, allowing the repair ingredients to penetrate deep into the hair and quickly improve hair quality. Furthermore, being more alkaline increases the rapid penetration rate, resulting in faster results.

Example 12
1. Preparation of Four-Part Mixture Hair Treatment Agent A hair treatment agent was prepared as follows.

(Four-liquid mixed hair treatment agent 10)
A hair colorant (pH about 10) was used as treatment agent [X], and 80 g of the hair colorant was mixed with 2 g of undiluted hair repair agent [I] to which arginine had been added, 2 g of undiluted hair repair agent [II], and 20 g of hair repair agent [III] to prepare a four-part mixed hair treatment agent 10.
The hair repair agents [I], [II] and [III] all had the same composition as the three-part mixed hair repair agent of Example 1.
The hair coloring agent used was a so-called five-tone gray hair dye.
The pH of the four-part mixed hair treatment agent 10 was about 9, which was weakly alkaline.

(Four-liquid mixed hair treatment agent 11)
Four-component mixed hair treatment agent 11 was prepared in the same manner as above, except that arginine was not added to the hair repair agent [I] of four-component mixed hair treatment agent 10.
The pH of the four-part mixed hair treatment agent 11 was about 9, which was weakly alkaline.

2. Hair Treatment Model M's hair was treated with four-part mixed hair treatment composition 10 and four-part mixed hair treatment composition 11. The hair treatment was performed simultaneously on the same hair at different locations.

3. Evaluation The pH of the hair surface was checked from immediately after application until 30 minutes later. The results are shown in Table 7. The state of dyeing and finish after application were evaluated as follows:

(1) Change in pH

(2) Dyeing state and finish after application: Immediately after application, the four-component mixed hair treatment agent 10 was confirmed to have a more absorbed feel of the coloring agent than the four-component mixed hair treatment agent 11. The pH change also showed that the pH of the four-component mixed hair treatment agent 10 decreased immediately after application. It is presumed that the coloring agent was absorbed because the pH quickly became neutral.
In terms of the finish after application, no difference in texture or gloss was observed for any of the treatment agents, and no difference was observed in the subsequent dyeing condition, texture, or gloss, and good results were confirmed for the same evaluation items as in Example 1.
It was also confirmed that all treatments left the hair neutral after 30 minutes.

Example 13
1. Preparation of Four-Part Mixture Hair Treatment Agent A hair treatment agent was prepared as follows.

(Four-part mixed hair treatment agent 12)
Four-component mixed hair treatment agent 12 was prepared in the same manner as four-component mixed hair treatment agent 10, except that the hair color agent (pH approximately 10) used as treatment agent [X] was changed to a fashion dye in 11 tones.
The pH of the four-component mixed hair treatment agent 12 was about 9, which was weakly alkaline.

(Four-part mixed hair treatment agent 13)
Four-component mixed hair treatment composition 13 was prepared in the same manner as the four-component mixed hair treatment composition 12, except that arginine was not added to the hair repair agent [I].
The pH of the four-component mixed hair treatment agent 13 was about 9, which was weakly alkaline.

2. Hair Treatment Model O's hair was treated with four-part mixed hair treatment agent 12 and four-part mixed hair treatment agent 13. The hair treatments were performed on the same hair at different locations at the same time.

3. Evaluation The pH of the hair surface was checked from immediately after application until 40 minutes later. The results are shown in Table 7. The state of dyeing and finish after application were evaluated as follows:

(1) Change in pH

(2) Dyeing state and finish after application It was confirmed that the four-part mixed hair treatment composition 12 neutralized the hair more quickly than the four-part mixed hair treatment composition 13.
In addition, for both four-liquid mixed hair treatment agents 12 and 13, no difference in texture or gloss was observed in the finish after application, and no difference in the subsequent dyeing condition, texture, or gloss was observed, and good results were confirmed in the same evaluation items as in Example 1.
It was also confirmed that all treatments left the hair neutral after 40 minutes.

Claims (6)

A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
A three-part mixed hair repair agent containing at least amino acids consisting of arginine and aspartic acid, further containing threonine, serine, alanine and glycine, and further containing taurine and glutamic acid [III], characterized in that the three-part mixed hair repair agent is neutral to weakly alkaline. A hair repair method comprising applying the three-part hair repair agent described in claim 1 to hair. A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
a three-part mixed hair repair agent containing at least amino acids consisting of arginine and aspartic acid, further containing threonine, serine, alanine, and glycine, and further containing taurine and glutamic acid; and a hair repair agent [III] containing the three-part mixed hair repair agent, which is neutral to weakly alkaline;
The hair treatment agent is characterized in that the three-component mixed hair repair agent is mixed with a treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent, resulting in a four-component mixed hair treatment agent. A hair treatment method comprising applying the four-part hair treatment agent described in claim 3 to hair. A treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent , a hair straightening agent, or a treatment agent is applied to the hair,
After a predetermined time has elapsed since application of the treatment agent [X],
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
A hair treatment method comprising applying to hair a neutral to weakly alkaline three-liquid mixed hair repair agent containing at least amino acids consisting of arginine and aspartic acid, further containing threonine, serine, alanine and glycine, and a hair repair agent [III] containing taurine and glutamic acid . A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
a three-part mixed hair repair agent containing at least amino acids consisting of arginine and aspartic acid, further containing threonine, serine, alanine, and glycine, and further containing taurine and glutamic acid; and a hair repair agent [III] containing the three-part mixed hair repair agent, which is neutral to weakly alkaline;
a four-component mixed hair treatment composition obtained by mixing the three-component mixed hair repair composition with a treatment agent [X] selected from a hair coloring agent, a bleaching agent, a permanent wave agent, a hair straightening agent, or a treatment agent, and applying the four-component mixed hair treatment composition to the hair;
After the application of the four-component mixed hair treatment agent containing the treatment agent [X], a predetermined time has elapsed.
A hair repair agent [I] containing at least a hydrolyzed protein and an amino acid derivative;
A hair repair agent [II] containing at least low-molecular-weight keratin, medium-molecular-weight keratin, and an amino acid derivative;
A hair treatment method comprising applying to hair a neutral to weakly alkaline three-liquid mixed hair repair agent containing at least amino acids consisting of arginine and aspartic acid, further containing threonine, serine, alanine and glycine, and a hair repair agent [III] containing taurine and glutamic acid .