JP2018184347A - Composition for hair cosmetics and hair cosmetics containing the composition for hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composition for hair cosmetics and hair cosmetics which suppress the waving or bouncing of hair which is easily caused by the damaged hair and have an excellent effect of imparting excellent smoothness, good combing property and moist feeling to hair.SOLUTION: There is provided: a composition for hair cosmetics which comprises 5 to 30 mass% of N-(3-stearylalkylammonio-2-hydroxypropyl)hydrolyzed keratin (A) represented by the formula (I) and 0.1 to 30 mass% of one or two or more alcohols (B) selected from a monohydric alcohol having 2 to 3 carbon atoms and a dihydric or trihydric alcohol having 2 to 4 carbon atoms and is constituted so that the mass ratio (A)/(B) between (A) and (B) is 1:0.1 to 1:1; and a hair cosmetic by incorporating the composition for hair cosmetics. (Rand Reach independently represents an alkyl group having 1 to 3 carbon atoms; Rrepresents an amino acid side chain constituting keratin-decomposed peptide; and n represents 2.5 to 6.)SELECTED DRAWING: None

Description

  The present invention relates to a hair cosmetic composition and a hair cosmetic containing the hair cosmetic composition. More specifically, the present invention suppresses swells and splashes of hair that tend to occur in damaged hair, and is excellent in hair. The present invention relates to a composition for hair cosmetics and a hair cosmetic that can impart a feeling of slipping, good combability and moist feeling.

  Hair is damaged by chemical treatments such as hair color treatment, permanent wave treatment and straightening treatment, and physical treatment such as hair blow and excessive hair brushing, resulting in crunchiness, waviness and loss of luster. It is easy to cause problems such as breakage. For this reason, many hair cosmetics have been blended with silicones for the purpose of imparting smoothness and flexibility (Patent Document 1, etc.). There was a problem that the so-called build-up occurred due to the accumulation of and lost smoothness. In addition, in order to suppress the crispness of hair, treatment with an oily cosmetic material mainly composed of an oily substance such as ester oil is also performed (Patent Document 2). Only by replenishing, the moist feeling and strength imparting effect on the hair were not sufficient.

  There is an attempt to treat hair with a moisturizing substance and a film-forming polymer for the purpose of imparting moisturizing feeling and smoothness to the hair (Patent Document 3). In order to suppress the feeling of crispness, it was removed by shampooing or the like, and a temporary effect was obtained. For this reason, in order to increase the adsorptive power to hair, it has been proposed to permeate the inside of the hair with a cationic substance containing quaternary nitrogen (Patent Document 4), but the hair feels moist. In terms of grant, it was not fully satisfactory.

  Conventionally, hydrolyzed peptides (also referred to as hydrolyzed proteins or protein hydrolysates) obtained by hydrolyzing proteins derived from animals and plants and their derivatives have been used for preventing or repairing hair damage. . This is because these hydrolyzed peptides and their derivatives have good adsorptivity to hair, prevent hair damage, recover damaged hair and increase tensile strength, and make hair smooth and combable. This is because it has the effect of improving or imparting moisture retention, and has little irritation to hair and skin, high safety and excellent biodegradability. As a protein source for hydrolyzed peptides, the same keratin protein as hair is mainly used in hair cosmetics. A high-grade hydrolyzed peptide in which a quaternary ammonium group to which an alkyl group having 10 or more carbon atoms is added is bonded to the hydrolyzed peptide for the purpose of imparting strength and moisturizing feeling to the hair and oiliness. The use of alkylammonium derivatives has also been proposed (Patent Document 5).

  However, since most of the hydrolyzed peptides and their derivatives are water-soluble, due to the influence of higher alkyl groups, turbidity is likely to occur in water-soluble cosmetics, and it was difficult to formulate an amount sufficient to exert the effect. . Also, the keratin hydrolyzate part also has the problem that if keratin has a disulfide bond, increasing the average degree of polymerization of the amino acid slightly increases the molecular weight distribution and slightly lacks stability. Development of raw materials for hair cosmetics that can suppress swell and splashing under humidity and give the hair excellent slipperiness, good combability and moisturization, and hair cosmetics containing it are required. It was.

JP 2009-067733 A JP 2006-185938 A JP 2016-216400 A JP 2008-069083 A Japanese Patent Application Laid-Open No. 5-85721

  Therefore, in view of the circumstances as described above, the present invention suppresses hair swells and splashes that are likely to occur in damaged hair, and has excellent smoothness (slip feeling), good combability and moist feeling ( It is an object of the present invention to provide a hair cosmetic composition capable of imparting a moisturizing feeling) and a hair cosmetic composition containing the hair cosmetic composition.

  As a result of studies to solve the above problems, the present inventors have found that a stearyl dialkylaminohydroxypropyl group is bonded to a peptide obtained by oxidative degradation of keratin so that the average degree of polymerization of amino acids is 2.5 to 6. -(3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin, one or two kinds selected from monohydric alcohols having 2 or 3 carbon atoms and divalent or trivalent alcohols having 2 to 4 carbon atoms The composition mixed with the above alcohol can be stably blended in water-based cosmetics, and when applied to hair, suppresses swells and splashes of hair, and has excellent smoothness and good comb for hair. The present inventors have found that it is possible to impart street feeling and moist feeling, and have completed the present invention.

（式中、Ｒ^１およびＲ^２は同一でも異なっていてもよく、炭素数１〜３のアルキル基を示し、Ｒ^３はケラチンの酸化分解ペプチドを構成する種々のアミノ酸の側鎖を表し、ｎはアミノ酸の平均重合度を示し、２．５〜６の値である）で表されるＮ−（３−ステアリルジアルキルアンモニオ−２−ヒドロキシプロピル）加水分解ケラチンを５〜３０質量％、
（Ｂ）炭素数２または３の一価アルコール、炭素数２〜４の二価あるいは三価のアルコールから選ばれる１種または２種以上のアルコールを０．１〜３０質量％、
を含み、成分（Ａ）と成分（Ｂ）の質量比（Ａ）：（Ｂ）が、１：０．１〜１：１であることを特徴とする毛髪化粧料用組成物で、これを請求項１に係わる発明とする。 That is, the present invention is a composition using water as a medium, wherein the total amount of the composition is 100, and the following components (A) and (B):
(A) The following general formula (I)

(Wherein R ¹ and R ² may be the same or different and each represents an alkyl group having 1 to 3 carbon atoms, R ³ represents a side chain of various amino acids constituting the oxidative degradation peptide of keratin, n Represents an average degree of polymerization of amino acids and is a value of 2.5 to 6) N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by 5 to 30% by mass,
(B) 0.1 to 30% by mass of one or more alcohols selected from monohydric alcohols having 2 or 3 carbon atoms, divalent or trivalent alcohols having 2 to 4 carbon atoms,
A composition for hair cosmetics, wherein the mass ratio (A) :( B) of the component (A) to the component (B) is 1: 0.1 to 1: 1, The invention according to claim 1.

  In addition, n in general formula (I) shows the average polymerization degree of the amino acid of a keratin oxidative degradation peptide, and the amino acid polymerization degree used in this specification was calculated | required from the total amount of nitrogen of a keratin hydrolyzate, and the amount of amino nitrogen. It is a calculated value. The degree of amino acid polymerization is theoretically an integer, but since the keratin oxidative degradation product is obtained as a mixture of peptides having different amino acid polymerization degrees, the calculated value of the amino acid polymerization degree is not always an integer. Therefore, n in the general formula (I) is a value obtained by averaging the amino acid polymerization degrees of peptides having different amino acid polymerization degrees.

  When ethanol or glycerin is used as the alcohol of the component (B), the stability of the component (A) is improved when blended in an aqueous cosmetic, and in the case of ethanol, it is applied to the hair. For hair cosmetics using ethanol and / or glycerin as component (B), since the quick-drying at the time is improved to improve the adhesion to the hair, and in the case of glycerin, the moist feeling of the hair can be further enhanced The composition is the invention according to claim 2.

  The invention according to claim 3 is the N- (3-stearyl represented by the general formula (I) of the component (A) in the total amount of the hair cosmetic composition of the hair cosmetic composition according to claim 1 or 2. Dialkylammonio-2-hydroxypropyl) Hair cosmetic formulated with hydrolyzed keratin contained in an amount of 0.01 to 1% by weight. When applied to hair, it suppresses swells and splashes of hair and is excellent in smoothness. Well, it exhibits the effect of imparting good combing properties and moist feeling. The content of the hair cosmetic composition according to claim 1 or 2 in the hair cosmetic varies depending on the form of the hair cosmetic, but the component (A) is 0.01 to 0.01 in the total amount of the hair cosmetic. If 1% by mass is present, the effect is sufficiently exerted.

  The composition for hair cosmetics of the present invention suppresses swells and splashes of hair that are likely to occur in damaged hair, and is excellent in the effect of imparting excellent smoothness, good combability and moist feeling to the hair. The hair cosmetic composition containing the composition for hair cosmetics suppresses swells and splashes when applied to the hair, and imparts excellent smoothness, good combability and moist feeling to the hair. Can do.

  The hair cosmetic composition of the present invention contains 5 N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the above general formula (I) as an ingredient (A) in an aqueous solution. ~ 30% by mass, and one or more alcohols selected from a monohydric alcohol having 2 or 3 carbon atoms and a divalent or trivalent alcohol having 2 to 4 carbon atoms as the component (B) 30% by mass is contained so that the mass ratio (A) :( B) of the component (A) and the component (B) is 1: 0.1 to 1: 1. N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) of) is oxidatively hydrolyzed so that the average degree of polymerization of amino acids is 2.5-6. Stearyl dialkyl It is obtained by combining the emission ammonio hydroxypropyl groups.

In the general formula (I), R ¹ is a side chain of an amino acid constituting keratin. Specifically, glycine, alanine, serine, threonine, valine, leucine, isoleucine, phenylalanine, tyrosine, methionine, cysteic acid, tryptophan Amino acid residues such as aspartic acid, glutamic acid, arginine, lysine and histidine.

  N of the hydrolyzed keratin part of the N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) used in the present invention is 2.5 to 6, more preferably 3.2 to 4.5. This is because if the average degree of polymerization of amino acids is less than 2.5, the adsorptivity to hair is inferior, and the effect of N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin may not be exhibited. When N exceeds 6, the proportion of stearyl dialkylammoniohydroxypropyl group in N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin decreases, and the effect of stearyldialkylammoniohydroxypropyl group portion is exerted. It is for lowering.

  The keratin hydrolyzate that forms N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) used in the hair cosmetic composition of the present invention is animal hair, It can be obtained by decomposing feathers, human hair, etc. by a known method using acid, alkali, enzyme or a combination thereof. As a raw material for keratin, hoofs and horns can be used, but it is preferable to use wool or feathers because of the complexity of purification of decomposition products and the availability of raw materials. In the decomposition, the acid, alkali, enzyme amount, reaction temperature, and reaction time are controlled so that the average degree of polymerization of amino acids becomes 2.5 to 6, and the decomposition product is treated with hydrogen peroxide, sodium bromate, excess It is further oxidized with an oxidizing agent such as sodium borate. It is preferable to use hydrogen peroxide as the oxidizing agent because it has good selectivity for the disulphide bond of cystine and can be easily post-treated. In addition, the raw material keratin may be oxidized with an oxidizing agent and then hydrolyzed with an acid, alkali, enzyme, etc. to produce a keratin oxidative hydrolyzate. However, for sufficient oxidation and decomposition, keratin is oxidized after decomposition. Is preferred.

The stearyldialkylammoniohydroxypropyl group is introduced into the keratin oxidative degradation product thus obtained, but the long chain alkyl group is limited to the stearyl group here because the carbon number of the long chain alkyl group is small When the alkyl group having 20 or more carbon atoms is bonded to a keratin oxidative degradation product having an amino acid bond number (the above-mentioned n number) of 6 or less, the hydrophobicity is reduced. This is because the property becomes too strong and the stability in the aqueous cosmetic is lowered. In the general formula (I), the alkyl group represented by R ² and R ³ is defined as an alkyl group having 1 to 3 carbon atoms because the hydrophobicity increases as the number of carbon atoms increases, This is because the storage stability in the medium decreases. From the viewpoint of ensuring storage stability in an aqueous cosmetic, the alkyl group represented by R ² and R ³ preferably has 1 or 2 carbon atoms.

  Introduction of the stearyl dialkylammoniohydroxypropyl group into the keratin oxidative degradation product can be carried out by the method described in JP-A-4-29921. That is, 3-stearyldialkylammonium-1,2epoxypropane or 3-stearyldialkylammonium-2-hydroxy-1-chloropropane was added to an aqueous peptide solution with stirring at 20-50 ° C. under alkaline conditions of pH 8-10. This is a reaction in which a stearyl dialkylammoniohydroxypropyl group is bonded to nitrogen of the amino group of the peptide.

  The N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin aqueous solution thus obtained is made into a neutral solution with an acid agent such as hydrochloric acid or sulfuric acid, and the carbon number of component (B) is added thereto. One or more alcohols selected from 2 or 3 monohydric alcohols, divalent or trivalent alcohols having 2 to 4 carbon atoms, and a mass ratio (A) to (B) of (A) and component (B): (B ) Is 1: 0.1 to 1: 1, and the total amount of the composition is 100, the component (A) is 5 to 30% by mass, the component (B) is 0.1 to 30% by mass, and the balance The composition for hair cosmetics of the present invention is obtained by adding an aqueous medium to the hair cosmetic composition. The aqueous medium may contain a water-soluble thickener, an emulsifier and the like.

  In the composition for hair cosmetics of the present invention, the concentration of N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) of the component (A) is 5% by mass or less. Then, when blended with hair cosmetics, N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin has the ability to suppress hair swells and splashes, excellent smoothness to hair, and a good comb There is a risk that the effect of imparting motility and moist feeling may not be exhibited, and when the concentration is 30% by mass or more, not only an increase in effect commensurate with the blending amount can be expected, but also when formulated in aqueous hair cosmetics The stability of the hair cosmetic may be lowered. From the aspect of obtaining sufficient effects and good usability, the concentration of N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) is 8 to 25 mass. % Is more preferable, and it is further more preferable that it is 10-20 mass%.

  Examples of the monohydric alcohol having 2 or 3 carbon atoms of component (B) include ethanol, propanol, and isopropanol. Examples of the divalent or trivalent alcohol having 2 to 4 carbon atoms include ethylene glycol and 1,2-propane. Examples include diol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, and glycerin. Since many alcohols have a unique odor when the number of carbons in the alcohol increases, among these, ethanol as the monohydric alcohol, 1,3-butanediol as the dihydric alcohol, and glycerin as the trihydric alcohol are preferred. Ethanol is preferable because it improves quick-drying in cosmetics, and glycerin is preferable because it has a moisturizing effect.

  In the composition for hair cosmetics of the present invention, one or more alcohols selected from monohydric alcohols having 2 or 3 carbon atoms and divalent or trivalent alcohols having 2 to 4 carbon atoms as component (B) The concentration of is 0.1 to 30% by mass, and the mass ratio of component (A) to N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin, (A): (B) is 1. : 0.1-1: 1, but this is N-- represented by the general formula (I) of component (A) when the blending ratio of component (B) to component (A) is 1: 1 or less. There is a possibility that (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin cannot be stably maintained in an aqueous solution, and when the blending ratio is 1: 1 or more, when blended into hair cosmetics, carbon Monovalent alcohol of number 2 or 3 In or safety of the cosmetic is reduced, the divalent or trivalent alcohols, there is a concern that so causing stickiness when applied to the hair. From the viewpoint of sufficient effect and good usability, the compounding ratio of component (B) to component (A) is more preferably 1: 0.2 to 1: 0.8 in (A) :( B). 1: 0.3 to 0.6 is more preferable. And as a density | concentration of alcohol in a composition, 1-20 mass% is more preferable, and it is still more preferable that it is 5-10 mass%.

  The hair cosmetic composition of the present invention comprises N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin of component (A) obtained as described above and 2 or 2 carbon atoms of component (B). 3. A hair cosmetic composition obtained by adding one or more alcohols selected from 3 monohydric alcohols, divalent or trivalent alcohols having 2 to 4 carbon atoms and water and a component (A ) N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin in a concentration of 0.01 to 5% by mass. Hair conditioner, hair rinse, shampoo, hair conditioner, rinse-off treatment, rinse-on treatment, etc. And when applied to hair, it can suppress swells and splashes, and can impart excellent smoothness, good combability and moist feeling to hair, and these effects are especially remarkable on damaged hair. is there.

  The hair cosmetic composition is composed of the above-described component (A), component (B) and an aqueous medium as it is, or by mixing other compoundable ingredients into the hair cosmetic composition. However, the content of the composition for hair cosmetics of the present invention in the hair cosmetic varies depending on the form of the hair cosmetic, but the general formula (I) of the component (A) in the total amount of oily hair cosmetics The amount of N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented is 0.01 to 5% by mass. When the content is 0.01% by mass or less, the effect of N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) is not exhibited, and 1 mass This is because an increase in the effect commensurate with the content is not recognized even when the content is more than%. In order to exert an excellent effect, the concentration of N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) in the total amount of the hair cosmetic is 0.05 to 2 mass% is more preferable, and 0.1-1 mass% is more preferable.

  In addition to the hair cosmetic composition of the present invention, the hair cosmetic composition of the present invention can contain other components that can be incorporated into the hair cosmetic composition within a range not impairing the effects of the present invention. Examples of such components include surfactants, synthetic polymers, semi-synthetic polymers, natural polymers, thickeners, viscosity modifiers, waxes, animal and vegetable oils, hydrocarbons, esters and other fats and oils, animals and plants Extracts, animal and plant derived protein hydrolysates and derivatives thereof, amino acids, pH adjusters, vitamins, fragrances, antioxidants, UV absorbers, polyhydric alcohols other than component (B), moisturizers, silicone oils , Anti-dandruff agents, oxidizing agents, reducing agents, colorants, dyes, hair-growth ingredients, preservatives, antibacterial agents and the like.

  EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the examples illustrated in these examples. In addition, each content (blending amount) of each component in the following examples and comparative examples is based on parts by mass, and for those whose blending amount is not solid content, the solid content is written in parentheses after the component name. Indicates the concentration.

Examples 1-3 and Comparative Examples 1-3
A hair treatment agent having the composition shown in Table 1 was prepared, the hair bundle of damaged hair was treated, and the effect of suppressing the swell of the hair after the treatment, the effect of suppressing the splash and the cohesiveness were evaluated.

  Examples and comparative products are shown in Table 2, and Examples 1 to 3 were designated as Examples 1 to 3, respectively. The N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) is abbreviated as a compound of the general formula (I).

  In the test, a hair bundle having a length of 27 cm and a weight of 10 g was used, and each hair bundle was bleached in the following manner to obtain damaged hair. That is, each hair bundle was washed in advance with a 2% aqueous solution of polyoxyethylene (3) sodium lauryl ether sulfate, rinsed in running tap water, and air-dried at room temperature. Next, after immersing 6% hydrogen peroxide and 2% ammonia in 1: 1 bleaching agent for 30 minutes, rinse in running tap water and buffer with 1M citric acid and 0.2M disodium hydrogen phosphate. It was immersed in a liquid (pH 3) for 5 minutes, rinsed in running tap water and air-dried at room temperature. This bleaching operation was repeated 5 times to obtain damaged hair for testing.

  For the treatment of the hair bundle, each bleached hair bundle was immersed in each test solution at 40 ° C. for 1 hour (bath ratio 1:10) and washed with running tap water at 40 ° C. for 1 minute. After washing, moisture on the hair surface was removed with a towel and then dried with a hair dryer. This operation was repeated 5 times, and then suspended vertically in a constant humidity tank maintained at a relative humidity of 79.3% with a saturated ammonium chloride aqueous solution and stored for 20 hours. After storage in a humidity chamber, the sample was left for 2 hours in a room with a humidity of 65% at 25 ° C. for 2 hours, and then 10 panelists evaluated each evaluation item based on the control product. The evaluation criteria are as follows.

Evaluation standard of swell The suppression effect of swell is clearly recognized: 3
Slight suppression effect is recognized: 2
Slight undulation effect is observed: 1
No difference between swell and control product: 0
Swell is larger than the control product: -1
The effect of suppressing the splash evaluation criteria is clearly recognized: 3
Slightly effective in suppressing splashing: 2
Slight suppression effect is observed: 1
There is no difference between the control and the splash: 0
Bounce larger than the control product: -1
It is recognized that the evaluation standard of unity is well organized: 3
Slightly gathered: 2
I feel a little better than the control product: 1
No difference in cohesiveness from the control product: 0
It is worse than the control product: -1
The evaluation results are shown in Table 3 as an average value of 10 people.

  As shown in Table 3, a composition containing N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin having an n value of 2.8 to 5 in the general formula (I) and alcohols The hair bundles of Examples 1 to 3 treated with the treating agent using Examples 1 to 3 of the present invention are N- (3-stearyldimethylammonio-2- (2) having a large number n in the general formula (I) as a comparative product. Hydroxypropyl) hydrolyzed keratin, N- (3-lauryldimethylammonio-2-hydroxypropyl) hydrolyzed keratin with a short alkyl chain bonded in place of the stearyl group, and stearyl chloride frequently used in hair conditioners Compared with the hair treated with the treatment agents of Comparative Examples 1 to 3 using trimethylammonium, any evaluation of swell, bounce, and cohesiveness of the hair The composition containing N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin having a high evaluation value and a value of n of 2.8 to 5 in the general formula (I) and alcohols is as follows: It was clear that hair swells and splashes were suppressed, and excellent cohesiveness was imparted to the hair.

  In particular, in the suppression effect of hair undulation, the evaluation values of Examples 1 to 3 in which N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by the general formula (I) is blended are as follows: It is higher than Comparative Example 2 in which N- (3-lauryldimethylammonio-2-hydroxypropyl) hydrolyzed keratin to which a short lauryl group is bonded instead of a stearyl group is combined, and is represented by the general formula (I) N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin has been shown to be excellent in the effect of suppressing hair swell.

Example 4 and Comparative Example 4 (hair conditioner)
A hair conditioner having the composition shown in Table 4 was prepared, and the swell state (small swell), cohesiveness and moist feeling of the hair after treatment were evaluated. In Example 4, N- (3-stearyldimethylammonio-2 represented by the general formula (I) in which R ¹ and R ² used in Example 1 are methyl groups and the value of n is 3.5. -Hydroxypropyl) Hydrolyzed keratin 15% by weight, ethanol 6.5% by weight and water 78.5% by weight. In Comparative Example 4, N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed Instead of decomposed keratin, O- [2-hydroxy-3- (trimethylammonio) propylhydroxyethylcellulose chloride, which is used as a component for improving the cohesiveness of hair, is used. The concentration of N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin in the hair conditioner of Example 4 is 0.45% by mass. In Comparative Example 4, an amount of ethanol substantially corresponding to Example 4 is added.

  In Table 4, * 1 is Calcoal 6850 (trade name) manufactured by Kao Chemical Co., Ltd., and * 2 is Kachinal STC-25W (trade name) manufactured by Toho Chemical Co., Ltd.

  In the test, hair conditioners of Example 4 and Comparative Example 4 were tested with 10 women who had trouble with hair undulation and had no history of permanent wave treatment or curly hair straightening treatment, after daily shampoo cleaning, with half head. Was applied to the hair and rinsed with warm water. The amount used varies depending on the amount of hair of each person, but the hair conditioners of the examples and comparative examples were instructed to use approximately the same amount. The subject was provided with a hair conditioner as test products 1 and 2 without clarifying the distinction between the examples and comparative examples. After one week of continuous use, 10 panelists were asked to evaluate whether the hair conditioner of Example 4 or the hair conditioner of Comparative Example 4 was superior in terms of hair undulation, coherence and moist feeling. . The results are shown in Table 5 in terms of the number of people who answered that the treatment in Example 4 was better, the number of people who answered that the hair treated in Comparative Example 4 was better, and the number of people who could say neither.

  As shown in Table 5, the majority of panelists answered that the hair conditioner of Example 4 was superior with respect to the low undulation and coherence of the hair, and more than half of the panelists were concerned with the moist feeling of Example 4 The composition containing N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin, ethanol, and water contained in Example 4 said that the hair conditioner was excellent. It was clear that it suppressed, imparted good cohesiveness, and moisturized hair.

Example 5 and Comparative Example 5 (shampoo)
Shampoos having the compositions shown in Table 6 were prepared, and the effect of suppressing swell of the hair after treatment, coherence, moist feeling and smoothness were evaluated. In Example 5, N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzate in which R ¹ and R ² are methyl groups and the value of n is 5 in the general formula (I) used in Example 2 A composition comprising 15% by mass of decomposed keratin, 5% by mass of ethanol, 5% by mass of glycerin and 75% by mass of water was used. In Comparative Example 5, N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin was used. Instead, an aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer, which is used as a component that gives hair coherence and smoothness, is used. The concentration of N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin in the shampoo of Example 5 was 0.15% by mass. Further, in Comparative Example 5, ethanol and glycerin in amounts substantially corresponding to Example 5 are added.

  In Table 6, * 3 is Leo Guard MGP (trade name) manufactured by Lion Chemical Co., Ltd.

  In the test, three hair bundles having a length of 27 cm and a weight of 10 g were prepared, and damaged hair obtained by repeating the bleaching process 5 times in the same manner as in Example 1 was used as a test hair bundle. Example 5 and Comparative Example 5 2 g of each shampoo was applied and washed, and washed with running water at 40 ° C. for 1 minute. After washing, moisture on the hair surface was removed with a towel and then dried with a hair dryer. This operation was repeated 5 times, and then suspended vertically in a constant humidity bath with a saturated aqueous ammonium chloride solution and a relative humidity of 79.3%, and stored for 20 hours. After storage in a humidity chamber, the sample was left for 2 hours in a room with a humidity of 65% at 25 ° C. for 2 hours, and then 10 panelists evaluated each evaluation item based on the control product. The evaluation criteria are the same as in Example 1 for the effect of suppressing the undulation of the hair after treatment, and the cohesiveness, and the moist feeling and smoothness are as follows.

Evaluation criteria for moist feeling Moist: 3
Slightly moist: 2
No difference in moist feeling with the control product: 1
Less moist than the control product: 0
There is a sticky feeling: -1
Evaluation of smoothness Very smooth: 3
Slightly smooth: 2
No difference in smoothness from the control product: 1
Less smooth than the control product: 0
There is a feeling of roughness: -1
The evaluation results are shown in Table 7 as an average of 10 people.

  As shown in Table 7, N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin, ethanol, glycerin and water represented by the general formula (I) where n is 5 In comparison with the shampoo of Comparative Example 5 in which the aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer was blended, the shampoo of Example 5 blended with the composition to be evaluated was evaluated for the swell suppression effect, cohesiveness and moist feeling. The composition containing N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin, ethanol, glycerin and water represented by the general formula (I) has a high swell inhibitory effect on hair, It was clear that it provided coherence and moist feeling. Further, regarding the smoothness, the evaluation value is slightly higher than that of Comparative Example 5 in which aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer is blended, and N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin. Has been shown to be excellent in the effect of imparting smoothness to hair.

Example 7 and Comparative Example 7 (hair mist)
A hair mist having the composition shown in Table 8 was prepared, and the degree of spread of the hair after treatment, coherence and moist feeling were evaluated. In Example 7, N- (3-stearyldimethylammonio-2-hydroxypropyl) in which R ¹ and R ² are methyl groups and the value of n is 2.8 in the general formula (I) used in Example 3 ) A composition containing 15% by mass of hydrolyzed keratin, 2% by mass of glycerol and 83% by mass of water. In Comparative Example 7, the molecular weight was replaced with N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin. One million polyvinylpyrrolidone is used. The concentration of N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin in the hair mist of Example 7 is 0.3% by mass. Moreover, in the comparative example 7, the quantity of glycerin corresponding to Example 7 is added.

  In the test, Example 7 and Comparative Example were conducted with 10 women who had trouble with hair undulation and had no history of permanent wave treatment or curly hair straightening treatment as a half-head on the hair once a day. 7 hair mist was applied to treat the hair. The amount used varies depending on the amount of hair of each person, but the hair mists of the examples and comparative examples were instructed to use approximately the same amount. In addition, the test subject 1 and 2 were provided with the hair mist for the test subject, without distinguishing an Example and a comparative example. After one week of continuous use, the hair that was treated with the hair mist of Example 7 and the hair mist of Comparative Example 7 was self-evaluated with respect to the little spread of hair, coherence and moist feeling. The results are shown in Table 9, and the number of people who answered that the treatment with the hair mist of Example 7 was superior and the number of people who answered that the hair treated with the hair mist of Comparative Example 7 were excellent were answered. Shown in number of people.

  As shown in Table 9, the majority of subjects replied that the hair mist of Example 7 was superior to the hair mist of Comparative Example 7 in any of the evaluation items of small hair spread, coherence and moist feeling. A composition containing N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin, glycerin and water, wherein n is 2.8 in the general formula (I) blended in the hair mist of Example 7 Was apparently excellent in the effect of imparting cohesiveness and moist feeling to the hair.

Example 8 and Comparative Example 8 (hair straightener)
The first hair straightening agent having the composition shown in Table 10 was prepared, and the swell state (small swell), cohesiveness and moist feeling of the treated hair were evaluated. In Example 4, N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin 10 masses in which R ¹ and R ² are methyl groups and the value of n is 3.5 in general formula (I) %, Ethanol 3 mass% and water 87 mass%, and in Comparative Example 4, stearyltrimethylammonium chloride was used instead of N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin. . The concentration of N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin in the first hair straightener of Example 8 is 1% by mass. In Comparative Example 8, an amount of ethanol commensurate with Example 8 is added.

  In Table 10, * 4 is MONTANOV68 (trade name) manufactured by SEPPIC.

  The second hair straightener is the same as in Example 8 and Comparative Example 8, and has the composition shown in Table 11.

  In the test, the hair for hair straightening practice was used, the hair was divided into right and left, and the hair straightening treatment was performed in the following manner using the hair straighteners of Example 8 and Comparative Example 8. That is, the first agent is sufficiently applied to the hair over about 10 minutes, covered with a wrap, allowed to stand at room temperature for 6 minutes, and then allowed to stand in an environment of 40 ° C. for 3 minutes. After leaving still for 5 minutes, it was washed with running water at 40 ° C. for 5 minutes. After towel drying, combing was performed, followed by drying with a hair dryer, and then a hair iron treatment at 180 ° C. was performed. Next, the second agent was sufficiently applied to the hair over about 10 minutes, allowed to stand at room temperature for 10 minutes, washed with running water at 40 ° C. for 5 minutes, towel dried and then dried with a hair dryer. Furthermore, the hair straightener of Example 8 and the curly hair of Comparative Example 4 were evaluated for each evaluation item with 10 panelists having less hair swell, coherence and moist feeling after washing with a commercially available shampoo. It was evaluated which hair treated with the straightener was superior. Table 12 shows the results, the number of people who answered that it was better to treat with the hair straightener of Example 8, and the number of people who answered that the hair treated with the hair straightener of Comparative Example 8 was better. Show the number of people who answered that it cannot be said.

  As shown in Table 12, the majority of panelists answered that the hair straightener of Example 8 was excellent in any of the evaluation items of low swell, cohesiveness, and moist feeling of the treated hair. And containing N- (3-stearyldimethylammonio-2-hydroxypropyl) hydrolyzed keratin, ethanol and water, wherein n is 3.5 in the general formula (I) blended in the hair straightener of Example 8. It was clear that the composition to be used has a high effect of imparting swell suppressing effect, cohesiveness, and moist feeling to the hair.

Claims (3)

In the composition using water as a medium, the total amount of the composition is 100, and the following components (A) and (B):
(A) The following general formula (I)

(Wherein R ¹ and R ² may be the same or different and each represents an alkyl group having 1 to 3 carbon atoms, R ³ represents a side chain of various amino acids constituting the oxidative degradation peptide of keratin, n Represents an average degree of polymerization of amino acids and is a value of 2.5 to 6) N- (3-stearyldialkylammonio-2-hydroxypropyl) hydrolyzed keratin represented by 5 to 30% by mass,
(B) 0.1 to 30% by mass of one or more alcohols selected from monohydric alcohols having 2 or 3 carbon atoms, divalent or trivalent alcohols having 2 to 4 carbon atoms,
A composition for hair cosmetics, wherein the mass ratio (A) :( B) of the component (A) to the component (B) is 1: 0.1 to 1: 1.   The composition for hair cosmetics according to claim 1, wherein the component (B) is ethanol and / or glycerin. A hair cosmetic composition comprising the hair cosmetic composition according to claim 1 or 2 so that the component (A) is contained in an amount of 0.01 to 5% by mass in the total amount of the hair cosmetic composition. .