JP7664651B2 - Hair cosmetic composition - Google Patents

Description

The present invention relates to a hair cosmetic composition and a hair cosmetic containing the hair cosmetic composition, and in particular to a hair cosmetic composition having excellent color retention and a hair cosmetic containing the hair cosmetic composition.

Hair coloring mainly consists of hair colors, which are permanent hair dyes that are quasi-drugs, and semi-permanent hair dyes such as hair manicures and hair color treatments that are cosmetic products. In particular, most permanent hair dyes contain a substance called paraphenylenediamine (oxidative dye), but when it comes to dark black colors, the amount of diamine compounds used is high, so extra care is required.

For example, a hair coloring composition containing paraphenylenediamine (oxidative dye) is known that is characterized by containing (a) a water-soluble peroxygen bleach; (b) a bleaching aid selected from organic peroxyacid bleach precursors and/or preformed organic peroxyacids; and (c) one or more hair coloring agents (Patent Document 1).

Special table Hei 11-501947

However, in the prior art, including Patent Document 1, products containing paraphenylenediamine (oxidation dye) require extra caution when using dark black colors, as described above, because the amount of diamine compound blended is high. In addition, in recent years, there have been reports of skin disorders caused by a substance called paraphenylenediamine (oxidation dye).

In addition, hair manicure, a semi-permanent hair dye, is characterized by the fact that the pigment (acid dye) penetrates deep into the hair after one use and the color lasts for 2 to 3 weeks. However, the longer it is left on the scalp, the harder it becomes to remove the dye, and it is difficult for the person applying the product to apply it right up to the hairline. As a result, the dye does not come out as well as hair color, given the skill of the person applying it, and this makes it a hair dye that is often avoided at salons and beauty parlors.

On the other hand, while the above-mentioned hair coloring can dye the cortex (the inside of the hair), hair color treatment dyes the cuticle (hair cuticle) and the cortex near the surface of the hair, and there are cases where it is not possible to achieve a hair color that lasts long enough.

The present invention aims to provide a hair cosmetic composition and hair cosmetic that provide better color retention when dyeing hair.

To achieve the above objective, the inventors conducted extensive research into treatments before and after hair color treatment, and came up with the present invention.

That is, the hair cosmetic composition of the present invention is a hair cosmetic composition comprising an amphoteric surfactant, a nonionic surfactant, an alkaline agent, and a pH adjuster, the alkaline agent being at least one selected from tetrahydroxypropylethylenediamine, triethanolamine, sodium hydroxide, potassium hydroxide, and aqueous ammonia, and the pH adjuster being at least one selected from phosphoric acid, glyoxylic acid, lactic acid, phytic acid, citric acid, malic acid, succinic acid, glutamic acid, aspartic acid, and tartaric acid, the amount of the amphoteric surfactant being 1 to 20% by mass, the amount of the nonionic surfactant being 3 to 15% by mass, the amount of the alkaline agent being 0.01 to 5% by mass, and the amount of the pH adjuster being 0.01 to 3% by mass, the hair cosmetic composition being for application to hair after a basic dye treatment .

In a preferred embodiment of the hair cosmetic composition of the present invention, the amphoteric surfactant is at least one selected from sodium cocoamphoacetate, sodium lauraminopropionate, cocamidopropyl betaine, lauramidopropyl betaine, and lauryl hydroxysultaine.

In a preferred embodiment of the hair cosmetic composition of the present invention, the nonionic surfactant is at least one selected from decyl glucoside, (caprylyl/capryl) glucoside, coconut oil alkyl glucoside, lauryl glucoside, and polyglyceryl-10 laurate.

In a preferred embodiment of the hair cosmetic composition of the present invention, the composition further contains at least one modifier selected from sodium chloride, glycine, sorbitol, hydrolyzed collagen, potassium chloride, edetic acids, or etidronic acids.

The hair cosmetic of the present invention is characterized by containing the hair cosmetic composition of the present invention.

The color treatment method of the present invention is characterized by comprising the steps of applying a hair coloring agent containing a basic dye, a thickener, and a preservative, and applying the hair cosmetic composition of the present invention.

The color treatment method of the present invention is also characterized in that after the step of applying the hair cosmetic composition, it further comprises the step of applying a hair cosmetic composition containing an amphoteric surfactant and a nonionic surfactant.

The color treatment method of the present invention is characterized in that it further comprises a step of applying an inorganic acid or an organic acid after the step of applying the hair cosmetic composition .

The hair cosmetic composition of the present invention has the advantageous effect of providing a hair color product that has good color retention and can be used safely in the face of the possibility that hair color use will become longer due to aging, and that can be applied safely to new hair growth without worrying about the product sticking to the scalp.

The hair cosmetic composition of the present invention is characterized by having an amphoteric surfactant, a nonionic surfactant, an alkaline agent, and a pH adjuster. The pH of healthy hair is in the range of approximately 4.5 to 5.5, and the ionic nature of hair is generally kept in balance. In the present invention, by using an amphoteric surfactant in combination with a nonionic surfactant, it is possible to improve the color retention of the hair color agent by applying the hair cosmetic composition of the present invention after applying a hair color agent.

The pH value of the hair cosmetic composition of the present invention can be adjusted to preferably 5.0 to 6.5, more preferably 5.5 to 6.0, from the viewpoint of dye color retention and hair color tone.

In a preferred embodiment of the hair cosmetic composition of the present invention, the amphoteric surfactant is, but is not limited to, at least one selected from sodium cocoamphoacetate, sodium lauraminopropionate, cocamidopropyl betaine, lauramidopropyl betaine, and lauryl hydroxysultaine, from the viewpoint of foaming and cleaning power. The amount of the amphoteric surfactant is, but is not limited to, preferably 1 to 20% by mass, more preferably 3 to 15% by mass, based on the total amount of the composition, from the viewpoint of finger smoothness after washing and drying.

In a preferred embodiment of the hair cosmetic composition of the present invention, the nonionic surfactant is at least one selected from decyl glucoside, (caprylyl/capryl) glucoside, coconut oil alkyl glucoside, lauryl glucoside, and polyglyceryl-10 laurate from the viewpoint of foaming. The amount of the nonionic surfactant is not particularly limited, but from the viewpoint of cleaning power, it can be preferably 1 to 20% by mass, more preferably 3 to 15% by mass, based on the total amount of the composition.

In a preferred embodiment of the hair cosmetic composition of the present invention, the alkaline agent is at least one selected from tetrahydroxypropylethylenediamine, triethanolamine, sodium hydroxide, potassium hydroxide, and aqueous ammonia from the viewpoint of hair color tone over time. The amount of the alkaline agent is not particularly limited, but from the viewpoint of irritation, it can be preferably 0.01 to 5 mass %, more preferably 0.1 to 3 mass %, based on the total amount of the composition.

In a preferred embodiment of the hair cosmetic composition of the present invention, the pH adjuster is at least one selected from phosphoric acid, glyoxylic acid, lactic acid, phytic acid, citric acid, malic acid, succinic acid, glutamic acid, aspartic acid, and tartaric acid from the viewpoint of color retention of the dye. The amount of the pH adjuster is not particularly limited, but from the viewpoint of hair color tone over time, it can be preferably 0.01 to 3 mass %, more preferably 0.1 to 2 mass %, based on the total amount of the composition.

In a preferred embodiment of the hair cosmetic composition of the present invention, from the viewpoint of preventing discoloration, the composition further contains at least one modifier selected from sodium chloride, glycine, sorbitol, hydrolyzed collagen, potassium chloride, edetic acids, or etidronic acids. The amount of the modifier is not particularly limited, but from the viewpoint of preventing discoloration, it is preferably 0.1 to 30% by mass, more preferably 1 to 20% by mass, based on the total amount of the composition.

In a preferred embodiment of the hair cosmetic composition of the present invention, the hair cosmetic composition is characterized in that it is intended to be applied to hair after treatment with a basic dye. That is, in the hair cosmetic composition of the present invention, the amphoteric surfactant and nonionic surfactant contained in the hair cosmetic composition can improve the color retention of the hair coloring agent, i.e., the basic dye. That is, as described above, the pH of healthy hair is in the range of approximately 4.5 to 5.5, and the ionicity of hair is generally kept in equilibrium, but when the pH of the hair cosmetic composition is near neutral, the amphoteric surfactant is amphoteric + anionic, so there are many negative ions in the hair cosmetic composition, which attract the positive ions of the basic dye. Since the basic dye is positively charged, if an anionic surfactant is contained, the hydrophilic group of the anionic surfactant may exhibit negative ionicity and remove the dye. In contrast, the amphoteric surfactant used in the present invention has both positive and negative properties, but is cationic in the acidic range and anionic in the alkaline range. In addition, nonionic surfactants do not affect dyes in the first place. For this reason, the inventors have discovered that the use of amphoteric surfactants and nonionic surfactants contained in the hair cosmetic composition can improve the color retention of dyes, particularly when dyes, particularly basic dyes, are used.

The hair cosmetic of the present invention is characterized by containing the hair cosmetic composition of the present invention.

The color treatment method of the present invention is characterized by comprising a step of applying a hair coloring agent containing a basic dye, a thickener, and a preservative, and a step of applying the hair cosmetic composition of the present invention. In the present invention, the basic dye is not particularly limited, but from the viewpoint of dyeing ability, examples of the basic dye include Basic Brown 16, Basic Blue 99, Basic Red 51, and Basic Yellow 87. The amount of the basic dye is not particularly limited, but from the viewpoint of damage to hair, it can be preferably 0.0005 to 5 mass %, more preferably 0.1 to 1 mass %, based on the total amount of the composition.

In the present invention, the thickener is not particularly limited, but examples of the thickener include PEG-150 pentaerythrityl tetrastearate, cocamide methyl MEA, and cocamide DEA from the viewpoint of enhancing foaming and thickening. The amount of the basic dye is not particularly limited, but from the viewpoint of foam stability, it is preferably 0.1 to 10% by mass, and more preferably 0.3 to 7% by mass, based on the total amount of the composition.

In the present invention, the preservative is not particularly limited, but from the viewpoint of the burden on the scalp, sodium benzoate, methylparaben, phenoxyethanol, etc. can be mentioned. The amount of the basic dye is not particularly limited, but from the viewpoint of product stability, it can be preferably 0.01 to 1 mass %, more preferably 0.1 to 0.8 mass %, based on the total amount of the composition.

For the hair cosmetic composition, please refer to the description of the hair cosmetic composition of the present invention described above.

One embodiment of the present invention is described below, but the present invention should not be interpreted as being limited to the following embodiment.

Example 1
First, a test hair bundle sample 1) was prepared. The dyed hair bundle was prepared using a basic dye as follows. The hair dye (hair coloring agent) of formula 1 was applied to a hair bundle of 100% human gray hair (1g x 1cm) (product number: BM-WA, manufactured by Bealux Co., Ltd.) and wrapped, and then left at 40°C for 30 minutes using a constant temperature dryer (model: SDN27P, Sansho Co., Ltd.), after which the hair cosmetic composition of the present invention was applied (washed), and then dried to prepare a test hair bundle sample 1). The details of formula 1 are shown in Table 1. In the hair dye of formula 1, hydroxyethyl cellulose is used as a thickener, and methylparaben is used as a preservative. The pH of the hair dye was adjusted to 6.8 or higher.

The ingredients of the applied hair cosmetic composition of the present invention are shown in Table 2.

In Table 2, the sources of A), D), F), and H) are as follows: A) Softazoline CL-R (Kawaken Fine Chemicals Co., Ltd.), D) Plantacare 2000 UP (BASF Japan Ltd.), F) Adeka Carpol MD-100 (ADEKA Corporation), H) Nippi Peptide CQT-F01-G (Nippi Corporation).

In one example, the hair cosmetic composition of the present invention was a light yellow to yellowish brown liquid, had a pH of about 5.8, and a viscosity of 2,300 mPa·s. In the present invention, no anionic surfactant was used, and sodium cocoamphoacetate was used as the amphoteric surfactant, and decyl glucoside was used as the nonionic surfactant.

Next, the color retention of the hair coloring agent, i.e., the effect of inhibiting fading, was investigated using the hair cosmetic composition of the present invention. Specifically, the test hair bundle sample 1) prepared as described above was measured using a spectrophotometer (model: SD6000, manufactured by Nippon Denshoku Industries Co., Ltd.). The results are shown in Table 3.

Example 2
Next, the test hair bundle sample 1) of Example 1 was used to compare the results when an anionic surfactant and a nonionic surfactant were used. For the hair cosmetic composition applicable to the method of the present invention of Example 2 and Comparative Examples 1 and 2, the hair cosmetic composition was adjusted to about pH 5.0, and the dyed test hair bundle sample 1) was placed in each test tube, and 25 g of the hair cosmetic composition of Example 2, Comparative Examples 1 and 2 having the components shown in Table 4 below was poured into the test tube, and the hair was left at 25°C for 24 hours using a programmable low-temperature incubator (model: IN804, manufactured by Yamato Scientific Co., Ltd.), rinsed and dried, and the color was measured using a spectrophotometer (model: SD6000, manufactured by Nippon Denshoku Kogyo Co., Ltd.). Comparative Example 1 is an example in which a combination of an anionic surfactant and an amphoteric surfactant was used, and sodium laureth sulfate, a polyoxyethylene alkyl ether sulfate salt that is widely used as an anionic surfactant, was used. In addition, Comparative Example 2 is an example in which an anionic surfactant and an amphoteric surfactant are combined to use TEA-cocoyl glutamate, which is widely used as an amino acid surfactant of an anionic surfactant. In addition, Example 2 is an example in which a nonionic surfactant and an amphoteric surfactant are combined to use decyl glucoside, an alkyl polyglucoside type with excellent foaming properties, as the nonionic surfactant. Table 4 shows the components and amounts used in each Example 2 and Comparative Examples 1 and 2.

In Table 4, the sources of A) to E) are as follows: A) Softazoline CL-R (Kawaken Fine Chemicals Co., Ltd.), B) Emeral 327 (Kao Corporation), C) Amisoft CT-12S (Ajinomoto Co., Inc.), D) Plantacare 2000 UP (BASF Japan Ltd.), E) Catinal HC-200 (Toho Chemical Industry Co., Ltd.).

Similarly, the test hair bundle samples 1) used in Example 2 and Comparative Examples 1 and 2 were measured for color using a spectrophotometer (model: SD6000, manufactured by Nippon Denshoku Industries Co., Ltd.). The results are shown in Table 5.

As a result, it was found that in Example 2, which used a combination of a nonionic surfactant and an amphoteric surfactant, the color difference was small at 17.29, and the color retention, i.e., the effect of suppressing fading, was excellent.

Example 3
Next, a dye containing a nonionic surfactant was prepared to prepare a test hair bundle sample 2). A hair bundle of 100% human gray hair (1g x 1cm) (product number: BM-WA, manufactured by Beaulax) was placed in a test tube, and 25g of the hair dye of formulation 2 was dispensed into it. The hair bundle was then left to stand at 25°C for 20 minutes using a programmed low-temperature incubator (model: IN804, manufactured by Yamato Scientific Co., Ltd.), after which it was washed with the hair cosmetic composition of the present invention and dried to prepare a test hair bundle sample 2). The details of formulation 1 are shown in Table 6.

The source of D) in Table 6 is as follows: D) Plantacare 2000 UP (manufactured by BASF Japan Ltd.).

Examples 4 to 12
Next, inorganic and organic acids applicable as pH adjusters were widely examined. That is, to see whether the color retention would change depending on the inorganic and organic acids added, the hair cosmetic compositions applicable to the method of the present invention, each containing each component of Examples 4 to 12, were adjusted to about pH 4.5, and left at 40°C for 60 minutes using a constant temperature dryer (model: SDN27P, Sansho Co., Ltd.). While left standing, the test hair bundle sample 2) prepared as described above was placed in a test tube, and after leaving it, 25 g was dispensed into each test tube and left at 40°C for 30 minutes. After rinsing and drying, the color retention was compared visually. It was found that, in addition to phytic acid, glutamic acid and aspartic acid had good color retention. Also, the organic acid with the best color retention was phytic acid. The results are shown in Table 7. This, in comparison with the results of Example 3, shows that the hair cosmetic composition of the present invention may be applied in addition to using a hair dye containing a nonionic surfactant in a basic dye. It was also found that the hair cosmetic composition of the present invention had excellent color retention even when an inorganic acid or an organic acid was applied after the application of the composition.

In Table 7, F) was obtained from the following source: F) ADEKA Carpole MD-100 (manufactured by ADEKA Corporation).

Examples 13 to 15
As the results of Examples 4 to 12 showed that phytic acid was superior, the relationship between the amount of phytic acid, pH, and color retention was investigated. Using the test hair bundle sample 2) prepared as described above, in order to confirm the color difference due to the amount of phytic acid and pH in the hair cosmetic composition applicable to the method of the present invention having the components of Examples 13 to 15, the hair bundle sample 2) was left at 40°C for 60 minutes in a constant temperature dryer (model: SDN27P, Sansho Co., Ltd.). While left, the test hair bundle sample 2) was placed in a test tube, and after leaving, 25 g was dispensed into each test tube and left at 40°C for 30 minutes. After rinsing and drying, the color was measured using a spectrophotometer (model: SD6000, Nippon Denshoku Kogyo Co., Ltd.). At the same pH, i.e., around pH 3, the more the amount of phytic acid was, the smaller the color difference was, and when phytic acid (50% solution) was about 2.80%, the lower the pH, the smaller the color difference was. The results are shown in Table 8.

なお、表８中のF)の入手先は、F)：アデカカーポール MD-100（（株）ＡＤＥＫＡ製）である。

In addition, the source of F) in Table 8 is F): ADEKA Carpole MD-100 (manufactured by ADEKA Corporation).

Examples 16 to 20
Next, we investigated whether there was a difference in color retention due to differences in modifiers. Test hair bundle sample 1) prepared in the above-mentioned example was used as the test hair bundle sample. As a result, among the test hair bundle samples 1) dyed with a basic dye, the one containing sodium chloride had the smallest color difference. The ingredients and amounts of the ingredients in Examples 16 to 20 are shown in Table 9.

The sources of A) to H) in Table 9 are as follows: A) Softazoline CL-R (Kawaken Fine Chemicals Co., Ltd.), D) Plantacare 2000 UP (BASF Japan Ltd.), G) Sorbitol Kao (Kao Corporation), H) Nippi Peptide CQT-F01-G (Nippi Corporation).

As in the above example, the test hair bundle sample 1) was measured using a spectrophotometer (model: SD6000, manufactured by Nippon Denshoku Industries Co., Ltd.), and the results are shown in Table 10.

As such, it has been found that the present invention provides a hair cosmetic composition and hair cosmetic that have excellent color retention when applied to hair that has been treated with a hair dye, particularly a basic dye.

This invention makes it possible to improve color retention in hair color treatments, and is of great industrial value in a wide range of applications.

Claims (8)

1. A hair cosmetic composition comprising an amphoteric surfactant, a nonionic surfactant, an alkaline agent, and a pH adjuster, wherein the alkaline agent is at least one selected from the group consisting of tetrahydroxypropylethylenediamine, triethanolamine, sodium hydroxide, potassium hydroxide, and aqueous ammonia, and the pH adjuster is at least one selected from the group consisting of phosphoric acid, glyoxylic acid, lactic acid, phytic acid, citric acid, malic acid, succinic acid, glutamic acid, aspartic acid, and tartaric acid, wherein the amount of the amphoteric surfactant is 1 to 20% by mass, the amount of the nonionic surfactant is 3 to 15% by mass, the amount of the alkaline agent is 0.01 to 5% by mass, and the amount of the pH adjuster is 0.01 to 3% by mass, the hair cosmetic composition being intended to be applied to hair after a basic dye treatment . The hair cosmetic composition according to claim 1, wherein the amphoteric surfactant is at least one selected from sodium cocoamphoacetate, sodium lauraminopropionate, cocamidopropyl betaine, lauramidopropyl betaine, and lauryl hydroxysultaine. The hair cosmetic composition according to claim 1 or 2, wherein the nonionic surfactant is at least one selected from decyl glucoside, (caprylyl/capryl) glucoside, coconut oil alkyl glucoside, lauryl glucoside, and polyglyceryl-10 laurate. The hair cosmetic composition according to any one of claims 1 to 3 , further comprising at least one modifier selected from sodium chloride, glycine, sorbitol, hydrolyzed collagen, potassium chloride, edetic acids, and etidronic acids. A hair cosmetic comprising the hair cosmetic composition according to any one of claims 1 to 4 . A color treatment method comprising the steps of: applying a hair color agent containing a basic dye, a thickener, and a preservative; and applying the hair cosmetic composition according to any one of claims 1 to 4 . The method according to claim 6 , further comprising the step of applying a hair cosmetic composition having an amphoteric surfactant and a nonionic surfactant after the step of applying the hair cosmetic composition. The method according to claim 6 or 7, further comprising the step of applying an inorganic acid or an organic acid after the step of applying the hair cosmetic composition .