JP7519040B2 - Hair treatment products - Google Patents

Description

The present invention relates to a hair treatment agent, and more specifically, to a hair treatment agent comprising a first agent and a second agent each containing a specified ingredient, the first agent and the second agent being applied sequentially to damaged hair.
In the present invention, the average molecular weight means a "number average molecular weight".

It is well known that hair can be damaged by oxidation hair dyeing, hair bleaching, or hair decoloring processes. It is also known that hair that has been permanently waving can be damaged, although the cause is different from that of the oxidation hair dyeing process.
Therefore, various hair care products and hair treatments have been proposed for the purpose of repairing damaged hair.

Special Publication No. 2009-521438 Special Publication No. 2013-523937 JP 2007-326869 A

The above-mentioned Patent Document 1 relates to a hair treatment composition consisting of a solution system containing a specific moisturizing agent, specific hair treatment ingredients, and water. For example, the silk hair treatment in Example 15 contains 0.42% collagen amino acid as a hair treatment ingredient.

The hair conditioning product disclosed in the above-mentioned Patent Document 2 has as its main component a protein-acrylate copolymer containing at least one nitrogen-containing acrylic monomer, and gives as an example an acrylate copolymer in which the protein is collagen amino acid (CROTEIN (registered trademark) CAA S/F).

The above-mentioned Patent Document 3 relates to hydrolyzed collagen derived from fish scales, and the skin lotions relating to its Examples 1 and 2 contain hydrolyzed collagen derived from fish scales and several types of oily ingredients well known as hair conditioning ingredients. In addition, some comparative products use hydrolyzed collagen derived from cowhide instead of hydrolyzed collagen derived from fish scales.

As disclosed in Patent Documents 1 to 3 above, hair treatment agents known as hair treatments, hair conditioning agents, hair care agents, etc., contain damage care ingredients such as proteins, peptides, amino acids, and various oily ingredients, or may contain a combination of these ingredients. However, these conventional hair treatment agents have not necessarily been able to provide a fully satisfactory effect in repairing damaged hair. In particular, there has been no hair treatment agent that uses carbonates and has a repair effect on hair damaged by such agents.

The inventors of the present application thought that these damage care ingredients may have different roles in repairing damaged hair. They then came up with the idea that it may be possible to achieve a new repair effect on damaged hair by applying different types of damage care ingredients in a specific order according to the different roles of the damage care ingredients, rather than simultaneously applying them as a mixture to damaged hair.

The technical problem to be solved by the present invention is to provide a hair treatment that can provide a fully satisfactory repair effect on hair damaged by hair treatments containing carbonates, and that is expected to provide good feel, manageability, and prevention of fading of damaged hair.

(Configuration of the First Invention)
The first invention of the present application is a hair treatment composition comprising a first agent containing the following component (A) and a second agent containing the following component (B), in which the second agent is applied after the first agent is applied to the hair.
(A) an oil component and/or a protein hydrolysate having an average molecular weight of 1,000 or more; (B) a peptide or protein hydrolysate having an average molecular weight of 200 or less.

It is also possible to rinse with water between the application of the first and second agents, but this is not necessary.

(Configuration of the second invention)
In the second invention of the present application, the content of the component (B) in the second agent of the hair treatment agent according to the first invention is 0.001 to 2 mass %.

(Configuration of the Third Invention)
In the third invention of the present application, the hair treatment composition according to the first or second invention is such that the second agent is applied at least 10 seconds after application of the first agent to the hair, more preferably 30 seconds, and even more preferably 60 seconds after application of the second agent.

(Configuration of the Fourth Invention)
In the fourth invention of the present application, the peptide or protein hydrolysate of component (B) in the hair treatment agent according to any one of the first to third inventions is derived from collagen.

(Configuration of the fifth aspect of the invention)
In the fifth invention of the present application, the hair treatment composition according to any one of the first to fourth inventions is applied to damaged hair that has been subjected to an oxidative hair dyeing treatment, a hair bleaching treatment, a hair bleaching treatment, or a permanent wave treatment.

(Effects of the First Invention)
Although both components (A) and (B) are conditioning components, the specific effects of the two components on damaged hair are highly likely not to overlap completely. As a result, the combined use of the two components in a conventional one-agent hair care product (simultaneous application to damaged hair) can be expected to have a certain complementary effect. However, as mentioned above, the effect of repairing damaged hair is not necessarily fully satisfactory.

In the first invention, (A) a first agent containing an oily component and/or a protein hydrolyzate with an average molecular weight of 1000 or more is first applied to damaged hair, and then (B) a second agent containing a peptide or protein hydrolyzate with an average molecular weight of 200 or less is applied, so that hair damage repair effects such as good feel, manageability, and prevention of fading can be fully expected. When component (A) and component (B) are applied simultaneously to damaged hair, the above effects cannot be fully obtained, as demonstrated in Comparative Example 6 described below.

The reason why the above effects of the first invention are obtained is not clearly understood, but it is presumed as follows. That is, application of component (A) creates a fixation site like a "scaffold" that promotes the fixation of component (B) inside the damaged hair. When component (B) is then applied, the fixation rate of component (B) to the damaged hair increases due to the presence of the fixation site, and the repair effects such as good feel, manageability, and anti-fading can be fully obtained.

The "oil component" in component (A) is a category that includes a wide variety of substances, and the inventors of the present application have not confirmed the above-mentioned effects for all types of oil components individually. However, as described above, it is presumed that the hydrophobicity of the oil component (A) is involved in the effect of the first invention, and therefore it is believed that there is a high probability that the effect applies generally to oil components.

The reason that sufficient repair effects are not obtained when components (A) and (B) are applied simultaneously to damaged hair is believed to be because the above-mentioned fixation sites are not sufficiently formed beforehand when component (B) is applied.

(Effects of the second invention)
The content of the component (B) in the first aspect of the invention is not limited, but it is preferable to set it within the range of 0.001 to 2 mass %.

(Effects of the third invention)
It is preferable that at least 10 seconds elapse between the application of the first and second agents to the damaged hair, which is presumably sufficient to form an anchoring site on the surface of the damaged hair in advance, thereby obtaining a good feel effect.
It is more preferable to rinse the treated hair with water at an appropriate timing within the above-mentioned period of at least 10 seconds (for example, 60 seconds).

(Effect of the fourth aspect of the invention)
As component (B), those derived from collagen are particularly preferred because they contain relatively large amounts of proline and hydroxyproline as constituent amino acids and are highly effective in terms of feel.

(Effect of the fifth aspect of the invention)
The hair treatment composition of the present invention can be applied to normal healthy hair, but is preferably applied to damaged hair, specifically hair that has been subjected to oxidation hair dyeing treatment, hair bleaching treatment, hair bleaching treatment, or permanent wave treatment.

The following describes the embodiments of the present invention, including the best mode thereof. The technical scope of the present invention is not limited to the following embodiments.

[Hair Treatment Agent]
The hair treatment agent of the present invention is a multiple agent type comprising at least a first agent and a second agent, and may also comprise a third agent of an appropriate composition in addition to the first and second agents. Its applications include, for example, hair care agents, hair conditioners, hair treatments, and the like, as well as shampoos, hair dyes using direct dyes, hair styling agents, and the like.

In the case of the above three-component system, it is preferable, for example, to have the first agent (the agent applied first) and the second agent (the agent applied second) contain the (A) component, and the third agent (the agent applied third) contain the (B) component. Furthermore, in this case, it is preferable that the (A) component contained in the first agent is a protein hydrolysate having an average molecular weight of 1000 or more, and the (A) component contained in the second agent is a vegetable oil.

The ratio of the amount of the first and second agents applied to the hair is not limited, as it is related to the amount of the (A) and (B) components in each agent. However, it is generally preferable to apply an amount ratio of the first agent:second agent in the range of 1:10 to 10:1.

The formulation of the first and second agents of the hair treatment agent is not particularly limited and can be selected as desired. For example, they can be used in the form of a cream, milky emulsion, liquid, gel, mousse, etc. For emulsions, O/W type, W/O type, etc. can be selected. For mousses, they can be aerosol or non-aerosol, etc., and for non-aerosol, they can take various forms such as squeeze foamer type and pump foamer type.

[First Agent]
The first agent of the hair treatment agent contains an oily component (A) and/or a protein hydrolysate having an average molecular weight of 1000 or more, with an oily component being particularly preferred. Examples of the oily component include higher alcohols, silicones, fats and oils, waxes, hydrocarbons, higher fatty acids, and alkyl glyceryl ethers and esters, with higher alcohols being particularly preferred from the standpoint of hair feel and manageability, and vegetable oils being preferred from the standpoint of preventing fading.

Examples of higher alcohols include cetyl alcohol (cetanol), behenyl alcohol, 2-hexyldecanol, stearyl alcohol, isostearyl alcohol, cetostearyl alcohol, oleyl alcohol, arachyl alcohol, 2-octyldodecanol, lauryl alcohol, myristyl alcohol, decyltetradecanol, and lanolin alcohol. It is particularly preferable to use cetanol, behenyl alcohol, and stearyl alcohol.

Examples of silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, hydroxyl-terminated dimethylpolysiloxane (dimethiconol), highly polymerized silicone with an average degree of polymerization of 650 to 10,000, polyether-modified silicone (e.g., (PEG/PPG/butylene/dimethicone) copolymer), amino-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, and fluorine-modified silicone.

Examples of fats and oils include vegetable oils and animal oils. Examples of vegetable oils include avocado oil, mango seed oil, olive oil, camellia oil, shea butter, cocoa butter, almond oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, macadamia nut oil, castor oil, coconut oil, and evening primrose oil.

Examples of animal oils include liver oil, whale oil, shark oil, lard (pork fat) and beef fat.

Examples of waxes include beeswax, candelilla wax, carnauba wax, Japan wax, rice bran wax, montan wax, paraffin wax, and microcrystalline wax.

Examples of hydrocarbons include paraffin, olefin oligomer, polyisobutene, hydrogenated polyisobutene, mineral oil, squalane, polybutene, polyethylene, and petrolatum.

Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, 12-hydroxystearic acid, oleic acid, and lanolin fatty acid.

Examples of alkyl glyceryl ethers include batyl alcohol, chimyl alcohol, selachyl alcohol, and isostearyl glyceryl ether.

Examples of esters include diisopropyl adipate, isopropyl myristate, cetyl octanoate, isononyl isononanoate, octyldodecyl myristate, isopropyl palmitate, stearyl stearate, myristyl myristate, isotridecyl myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, cholesteryl/lanosteryl fatty acids having 10 to 30 carbon atoms, cetyl lactate, lanolin acetate, ethylene glycol di-2-ethylhexanoate, pentaerythritol fatty acid esters, dipentaerythritol fatty acid esters, cetyl caprate, glyceryl tricaprylate, diisostearyl malate, dioctyl succinate, diethoxyethyl succinate, and cetyl 2-ethylhexanoate.

Examples of protein hydrolysates with an average molecular weight of 1000 or more include hydrolyzed collagen, hydrolyzed keratin, hydrolyzed soybean, hydrolyzed wheat, hydrolyzed silk, hydrolyzed rice protein, hydrolyzed almond protein, and hydrolyzed conchiolin. The content of component (A) in the first agent of the hair treatment agent is not particularly limited, but the lower limit is preferably 0.01% by mass, more preferably 0.1% by mass, and even more preferably 1% by mass, and the upper limit is preferably 20% by mass, more preferably 15% by mass, and even more preferably 10% by mass.

[Second Agent]
The second agent of the hair treatment agent contains component (B), which is a peptide or protein hydrolysate having an average molecular weight of not more than 200. Here, "peptide" refers to a fraction consisting mainly of amino acid oligomers separated from a protein hydrolysate, and "protein hydrolysate" refers to a mixture containing so-called crude protein or ash after a certain protein has been hydrolyzed, or a protein obtained by purifying this.

It is particularly preferable that the peptide or protein hydrolysate having an average molecular weight of 200 or less (B) is derived from collagen, since it contains a large amount of proline and hydroxyproline.

The content of component (B) in the second agent of the hair treatment agent is not particularly limited, but the lower limit is preferably 0.0001% by mass, more preferably 0.0005% by mass, and even more preferably 0.001% by mass, and the upper limit is preferably 5% by mass, more preferably 4% by mass, and even more preferably 2% by mass.

[Components other than those mentioned above in the first and second agents]
Any component may be blended into the first and second agents of the hair treatment agent as long as it does not inhibit the effects of the present invention. Examples of such optional components include solvents, surfactants, sugars, preservatives, chelating agents, stabilizers, pH adjusters, plant extracts, herbal extracts, cationic polymers containing cationic polysaccharides, water-soluble polymers such as carboxyvinyl polymers, vitamins, fragrances, antioxidants, ultraviolet absorbers, inorganic salts, etc. The content of the optional components in the first and second agents is not limited and can be determined appropriately. Some of the main components among these optional components will be described below in order.

(solvent)
Examples of the solvent include water and organic solvents. Examples of the organic solvent include ethanol, isopropanol, benzyl alcohol, benzyloxyethanol, glycol, and glycerin. Examples of the glycol include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, and 1,3-butylene glycol. Examples of the glycerin include glycerin, diglycerin, and polyglycerin.

(Surfactant)
The surfactant is blended, for example, as an emulsifier, a solubilizer for solubilizing each component, etc. It is also blended to adjust the viscosity of the composition and improve the viscosity stability. Examples of the surfactant include cationic surfactants, anionic surfactants, amphoteric surfactants, and nonionic surfactants.

Examples of cationic surfactants include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride (cetrimonium chloride), stearyltrimethylammonium chloride, alkyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, lanolin fatty acid aminopropylethyldimethylammonium ethyl sulfate, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, methacryloyloxyethyltrimethylammonium chloride, and behenyltrimethylammonium methylsulfate.

Examples of anionic surfactants include alkyl sulfate ester salts such as sodium lauryl sulfate and triethanolamine lauryl sulfate, alkyl ether sulfate ester salts such as sodium POE lauryl ether sulfate, sodium stearoyl methyl taurine, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, POE lauryl ether phosphate and its salts, N-lauroyl glutamate salts, and N-lauroyl methyl-β-alanine salts.

Examples of amphoteric surfactants include various betaines such as coconut oil fatty acid amidopropyl betaine, as well as sodium lauroamphoacetate and sodium cocoamphoacetate.

Examples of nonionic surfactants include ether-type nonionic surfactants, ester-type nonionic surfactants, and aliphatic alkanolamides.

Examples of ether-type nonionic surfactants include POE cetyl ether (ceteth), POE stearyl ether (steareth), POE behenyl ether, POE oleyl ether (oleth), POE lauryl ether (laureth), and POE octyldodecyl ether.

Examples of ester-type nonionic surfactants include POE glyceryl monostearate, POE glyceryl monomyristate, polyethylene glycol monooleate, polyethylene glycol monostearate, lipophilic glyceryl monooleate, self-emulsifying glyceryl monostearate, and decaglyceryl monolaurate.
An example of an aliphatic alkanolamide is coconut oil fatty acid monoethanolamide.

Examples of sugars include sorbitol, maltose, and N-acetylglucosamine. Examples of preservatives include paraben, methylparaben, sodium benzoate, and phenoxyethanol. Examples of chelating agents include ethylenediaminetetraacetic acid (EDTA) and its salts, diethylenetriaminepentaacetic acid and its salts, and hydroxyethanediphosphonic acid (etidronic acid, HEDP) and its salts.

The following describes examples and comparative examples of the present invention. The technical scope of the present invention is not limited by these examples and comparative examples.

[Preparation of hair treatment agent]
The first and second agents of the hair treatment agents according to Examples 1 to 20 and Comparative Examples 1 to 7 shown in Tables 1 and 2 at the end of this document were prepared according to a conventional method. Both the Examples and Comparative Examples shown in Table 1 contained higher alcohol and were in cream form, whereas the Examples shown in Table 2 were in emulsion form. In these tables, the components that are component (A) of the present invention are marked with "(A)" in the left-hand margin of the component name, and the components that are component (B) of the present invention are marked with "(B)". Components marked with "(a)" in the left-hand margin of the component name are components for comparison with component (A), and components marked with "(b)" are components for comparison with component (B).

In the table, for example, in the column labeled "Method,""I->II" indicates that the first agent was applied to the damaged hair to be evaluated in the order of "first agent" and "second agent," and "II->I" indicates that the second agent was applied to the damaged hair to be evaluated in the order of "first agent." In these examples and comparative examples, as shown in the "intermediate water wash" column in the table, water washing (rinsing) was performed between the treatments of the two agents, except for Example 12, during the 3-minute standing time described below.
In addition, examples marked "I+II" indicate that the first and second agents were mixed immediately before application and applied simultaneously.

[Method of evaluating hair treatment agents]
The hair treatment products according to each Example and Comparative Example were evaluated using a hair strand sample (a 10 cm long black hair strand manufactured by Beaulax) that had been treated three times with a two-component oxidative hair dye containing 4% by mass of 28% ammonia water and 4% by mass of ammonium bicarbonate as the alkaline agent used in the first agent of the oxidative hair dye.

In each example, 3 g of the first agent was applied per 1 g of hair bundle sample and left at 30°C for 3 minutes. The first agent adhering to the hair bundle was then rinsed with water, and 3 g of the second agent was applied per 1 g of hair bundle and left at 30°C for 3 minutes. After treatment, the hair bundle was rinsed with water and then dried with warm air. The feel of the tips and the manageability of the hair bundle after drying were evaluated based on the following evaluation criteria.

In Comparative Example 1, only the first agent treatment was performed, rinsed with water, and the hair bundle was dried with warm air before evaluation; in Comparative Example 3, only the second agent treatment was performed, rinsed with water, and the hair bundle was dried with warm air before evaluation; in Comparative Example 4, the second agent treatment was performed, followed by the first agent treatment; and in Comparative Example 6, the first and second agent treatments were performed simultaneously.

[Evaluation Criteria for Hair Treatment Products]
The evaluation of "feel" was performed by touching the tip of the hair bundle to evaluate the degree of moisture. The evaluation of "management" was performed by visually observing the spread of the tip of the hair bundle. Five panelists scored the results with 5 points for excellent evaluation, 4 points for good evaluation, 3 points for fair evaluation, 2 points for slightly poor evaluation, and 1 point for poor evaluation, and the average score of each panelist was calculated.

If the average value was 4.6 points or more, it was given a point of "5", if the average value was less than 4.6 points and 3.6 points or more, it was given a point of "4", if the average value was less than 3.6 points and 2.6 points or more, it was given a point of "3", if the average value was less than 2.6 points and 1.6 points or more, it was given a point of "2", and if the average value was less than 1.6 points, it was given a point of "1". The evaluation results for each example and comparative example are shown in the "Feel" and "Collectiveness" columns in the table.

To evaluate "anti-fading," sample hair strands treated with the hair treatment agents of each Example and Comparative Example as described above were evaluated for their color after two weeks of repeated shampooing. A sample hair strand that had been treated with the same oxidative dyeing process but not treated was used as a control for comparison.

Five panelists scored the color difference against the control, with a small color difference being given 5 points and a large color difference being given 1 point. The scores of each panelist were then averaged and the points were determined in the same manner as for "feel" and "unity" above. The evaluation results for each example and comparative example are shown in the "anti-fading" column in the table.

[Formulation example of a three-component hair treatment agent]
Table 3 at the end of this document shows examples of formulations for three-part hair treatment compositions according to the present invention. In Table 3, the composition of the first part is indicated by "I", the composition of the second part by "II", and the composition of the third part by "III".

According to the present invention, a hair treatment agent is provided that can achieve a fully satisfactory repair effect on hair damaged particularly due to a hair treatment agent containing a carbonate, thereby providing good feel, manageability, and prevention of fading of damaged hair.

Claims (4)

A hair treatment composition comprising a first agent containing the following component (A) and a second agent containing the following component (B), in which the second agent is applied after the first agent is applied to the hair.
(A) an oily component and/or a protein hydrolysate having an average molecular weight of 1,000 or more; (B) a peptide or protein hydrolysate having an average molecular weight of 200 or less (excluding the case of a single amino acid) , wherein the peptide or protein hydrolysate is derived from collagen. The hair treatment agent according to claim 1, wherein the content of component (B) in the second agent of the hair treatment agent is 0.001 to 2% by mass. The hair treatment agent according to claim 1 or 2, in which the second agent is applied at least 10 seconds after the first agent is applied to the hair. The hair treatment composition according to any one of claims 1 to 3 , which is applied to hair damaged by oxidation hair dyeing treatment, hair bleaching treatment, hair bleaching dyeing treatment or permanent wave treatment.