JP4723933B2 - Hair cosmetics - Google Patents

Description

  The present invention relates to a hair cosmetic, for example, a rinse, a conditioner, a hair tonic, a hair nourishing agent and the like.

In recent years, the proportion of people who perform permanent wave treatment and coloring treatment such as bleaching and hair dyeing is increasing due to an increase in hair beauty awareness.
Originally, healthy hair is more hydrophobic due to the lipid layer on the cuticle surface, but the permanent or coloring agent cleaves the thioester binding site of the lipid layer that forms the cuticle surface, and even up to cysteic acid residues. The hair surface becomes hydrophilic by being oxidized. For this reason, water easily penetrates into the hair during shampooing, and the physical strength of the hair itself decreases due to the denaturation of proteins forming the hair and the outflow of amino acids. Furthermore, calcium in tap water that has penetrated during hair washing is accumulated inside the hair, resulting in hair hardness and tingling.
The hair having a hydrophilic surface as described above is strongly subjected to physical stress during shampooing and combing due to entanglement and frictional resistance, and more than 80% of women in their twenties and thirties perform hair coloring. In modern life styles, it is presumed that this is the reason why troubles such as loss of hair feel and cut hair are serious and increasing.

As described above, in order to cope with hair damage caused by the permanent wave treatment or coloring treatment, it is necessary to adsorb the hydrophobic silicone compound to the hair with high efficiency. There exists a problem that the adsorption | suction efficiency of the silicone which is property will fall. For this reason, in recent years, attempts have been made to develop hair cosmetics aimed at improving the adsorptivity to hair using a modified silicone having a high adsorptivity to hair (for example, Patent Documents 1 to 3). reference).
However, in the case of the inventions described in these documents, it is not possible to obtain a sufficient amount of silicone adsorbed on the hair simply by improving the adsorptivity of the silicone itself. However, silicone alone has little effect on the inside of the hair, and there is a problem that the physical strength of the hair itself is not improved.

In addition, in order to impart appropriate moisture retention to the hair and improve lubricity, development of a hair cosmetic compounded with an oil agent (N-long chain acyl acidic amino acid ester) having a specific alkyl structure has been attempted ( For example, see Patent Documents 4 to 6).
However, in the case of the inventions described in these documents, the hair can be given a moist feeling and smoothness, but since the effect of improving the physical strength of the hair is insufficient, the hair tends to be broken. There is a problem.

Therefore, in order to improve the physical strength of hair, which was a problem in any of the inventions described in the above-mentioned documents, development of hair cosmetics containing α-hydroxy acid has been attempted (for example, patent documents). 7-8).
However, in the case of the inventions described in these documents, the gloss, elasticity, and flexibility of the hair are imparted, but the effect of improving the physical strength of the hair is not recognized, and the hair is broken. There is a problem that it is not possible to cope with the trouble.

JP 2003-095880 A JP 2003-160446 A JP 2003-183119 A JP 2001-122737 A JP 2004-143089 A Japanese Patent Laid-Open No. 2004-210658 Japanese Patent Application Laid-Open No. 2004-67649 JP 2000-109411 A

  An object of the present invention is to solve the conventional problems and achieve the following objects. That is, the present invention makes it possible to efficiently adsorb hydrophobic silicone on the hair surface to hair hydrophilized by permanent wave treatment or coloring treatment, and further to recover the physical strength of the hair, thereby causing troubles caused by broken hair. It aims at providing the hair cosmetics which eliminates.

  As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, it is possible to more effectively use hair cosmetics in combination with an α-hydroxy acid and an oil agent having a specific structure. It has been found that it improves the physical strength of and exhibits an excellent anti-breaking effect. Furthermore, by using nitrogen-containing modified silicone, silicone can be efficiently adsorbed to hydrophilic hair, the frictional resistance of hair can be effectively reduced, and the physical load on the hair can be reduced. It has been found that by reducing the amount, the cut hair can be reduced, and further, smoothness can be imparted to the hair.

The present invention is based on the above findings of the present inventors, and means for solving the above problems are as follows. That is,
<1> (A) containing a nitrogen-containing modified silicone represented by the following structural formula (1), (B) α-hydroxy acid, and (C) an oil agent represented by the following structural formula (2). Is a hair cosmetic characterized by
In the structural formula (1), R ₁ represents either a methyl group or a hydroxyl group. R _{2 is, - (CH 2) n-} A 1, and _{- (CH 2) n-NHCO-} (CH 2) represents any of m-A _1. A ₁ represents any of —N (R ₃ ) (R ₄ ) and —N ⁺ (R ₃ ) (R ₄ ) (R ₅ ) · X ⁻ . R _{3 to} R ₅ may be the same as or different from each other, and each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or a phenyl group. X ⁻ represents any of a fluorine ion, a chlorine ion, a bromine ion, an iodine ion, a methyl sulfate ion, and an ethyl sulfate ion. The values of m and n may be the same as or different from each other, and represent an integer of 1 to 12. The values of p and q represent the degree of polymerization of the polysiloxane, and may be the same or different from each other. The value of p + q represents 3000 to 20,000, and the value of q / p is 1 / 10,000 to 1/500.
In the structural formula (2), r ₁ represents any of an alkyl group having 1 to 22 carbon atoms and an alkenyl group. r ₂ represents either an alkyl group having _{2 to} 34 carbon atoms or an alkenyl group. r ₃ represents cholesterol, phytosterol, and groups derived from any of these derivatives, branched alkyl group having 13 to 68 carbon atoms, and any of its derivatives. Y represents either a polyhydric alcohol having 3 to 5 hydroxyl groups in the molecule or an amino acid.
<2> The content of the nitrogen-containing modified silicone (A) is 0.05 to 10% by mass, the content of the α-hydroxy acid (B) is 0.01 to 5% by mass, and the structural formula (1) The hair cosmetic composition according to <1>, wherein the content of the oil agent (C) represented by the formula is 0.01 to 5% by mass.
<3> The hair cosmetic according to any one of <1> to <2>, wherein the pH value is 2.0 to 7.0.
<4> The mass ratio (B: C) of the content of the α-hydroxy acid (B) and the content of the oil agent (C) represented by the structural formula (1) is 1:99 to 99: 1. The hair cosmetic according to any one of <1> to <3>.
<5> The hair cosmetic according to any one of <1> to <4>, wherein the α-hydroxy acid (B) is at least one selected from glycolic acid, lactic acid, malic acid, and citric acid. .
<6> The hair cosmetic according to any one of <1> to <5>, wherein the nitrogen-containing modified silicone is used in combination with dimethylsilicone.
<7> The hair cosmetic composition according to <6>, wherein the ratio of the nitrogen-containing modified silicone to the dimethyl silicone is 5:95 to 40:60.
<8> The hair cosmetic composition according to any one of <1> to <7>, which contains a surfactant.

  According to the present invention, conventional problems can be solved, and hydrophobic silicone is efficiently adsorbed on the hair surface to the hair that has been made hydrophilic by permanent wave treatment or coloring treatment, and further has a repair effect inside the hair. It is possible to provide a hair cosmetic that eliminates troubles such as broken hair by reducing tangling of hair and frictional resistance between hairs during hair washing and combing, and further restoring the physical strength of the hair. it can.

(Hair cosmetic)
The hair cosmetic composition of the present invention comprises (A) a nitrogen-containing modified silicone represented by Structural Formula (1), (B) an α-hydroxy acid, and (C) an oil represented by Structural Formula (2). In addition, it contains other components appropriately selected from surfactants, oils, humectants, amino acids and the like as necessary.

<(A) Nitrogen-containing modified silicone represented by structural formula (1)>
Since the nitrogen-containing silicone represented by the following structural formula (1) has a nitrogen content having a cationic property, it reacts with a cysteic acid group (anionic group) on the hair surface that has been hydrophilized, thereby rinsing during hair washing. In addition, since it tends to stay in the hair, it is possible to reduce the frictional resistance during good fingering and combing.

In the structural formula (1), R ₁ represents either a methyl group or a hydroxyl group. Among these, by using a hydroxyl group, the hydroxyl group and the hydroxyl group on the hair surface cause a condensation reaction when the dryer is heated, so that the nitrogen-containing modified silicone represented by the structural formula (2) stays in the hair. It becomes easy. Therefore, a hydroxyl group is preferable.

In the structural formula (1), R ₂ represents any _one of — (CH ₂ ) n—A _{1 and} — (CH ₂ ) n—NHCO— (CH ₂ ) m—A ₁ .
The values of m and n may be the same or different from each other, and represent an integer of 1 to 12. In particular, the value of n is preferably 2 to 6, the value of m is preferably 2 to 4, and the value of n + m is preferably 4 to 8.
When the values of n and m exceed 12, the compatibility between the nitrogen-containing modified silicone and other components is deteriorated, and handling such as blending may be difficult, and the value of n + m exceeds 8. In addition, the compatibility between the nitrogen-containing modified silicone and other components may deteriorate, and handling such as blending may become difficult.
Wherein A _{1 is, -N (R 3) (R} 4), and _{^{-N + (R 3) (R}} 4) (R 5) · X - represents any of.
Said R < ₃ > -R < ₅ > may mutually be same or different, and represents either a hydrogen atom, a C1-C12 alkyl group, and a phenyl group.
X ⁻ represents any one of fluorine ion, chlorine ion, bromine ion, iodine ion, methyl sulfate ion (CH ₃ OSO ₃ ⁻ ), and ethyl sulfate ion (CH ₃ CH ₂ OSO ₃ ⁻ ).

The values of p and q represent the degree of polymerization of the polysiloxane, and may be the same or different from each other. The value of p + q represents 3000 to 20,000, and the value of q / p is 1 / It represents 10,000 to 1/500.
When the value of p + q is less than 3000, the physical properties of the nitrogen-containing modified silicone become oily, and the conditioning performance after using the nitrogen-containing modified silicone may be insufficient. On the other hand, if the value of p + q exceeds 20,000, the compatibility between the nitrogen-containing modified silicone and other components may be deteriorated and handling such as blending may be difficult. Therefore, the value of p + q is preferably 4000 to 20,000.
When the q / p value is less than 1 / 10,000, the interaction between the nitrogen-containing modified silicone and the hair may be insufficient, and the sustaining of the conditioning effect may be insufficient. If the q / p value exceeds 1/500, the content of amine in the nitrogen-containing modified silicone increases, and the nitrogen-containing modified silicone undergoes a crosslinking reaction during production, and adsorbs to hair. May become insufficient, and the odor of the amine becomes stronger, which may cause a problem of raw material odor. Therefore, the q / p value is preferably from 1/2000 to 1/500.

  Examples of the nitrogen-containing silicone represented by the structural formula (1) include dimethylsiloxane / methyl (aminopropyl) siloxane copolymer, aminoethylaminopropylpolysiloxane, and the like. Dimethylsiloxane methyl (aminopropyl) siloxane copolymer marketed under the trade name "-8020", and dimethylsiloxane methyl (aminopropyl) siloxane copolymer also marketed under the trade name "X23-2328" Emulsion, dimethylsiloxane / aminoethylaminopropylmethylsiloxane copolymer marketed under the trade name “SF8452C” by Toray Dow Corning, dimethylsiloxane / aminoethylaminopropyl also marketed under the tradename “SF8457C” Chill copolymer, "SM-8704C" aminoethyl aminopropyl polysiloxane emulsion or the like which are commercially available under the trade name and the like as well.

The nitrogen-containing modified silicone represented by the structural formula (1) is preferably mixed with dimethyl silicone.
The mixing ratio of the nitrogen-containing modified silicone represented by the structural formula (1) and the dimethyl silicone (the nitrogen-containing modified silicone (mass): the dimethyl silicone (mass)) is 1:99 to 100: 0. Is preferably 5:95 to 40:60, more preferably 10:90 to 30:70.
There is no restriction | limiting in particular as said dimethyl silicone, For example, the dimethyl silicone etc. which are marketed by the brand name of "X-21-5615" from Shin-Etsu Chemical etc. are mentioned.

  The content of the nitrogen-containing modified silicone represented by the structural formula (1) is preferably 0.05 to 10% by mass, more preferably 0.20 to 5% by mass, based on the total amount of the hair cosmetic. 50 to 3% by mass is particularly preferable. When the content is less than 0.05% by mass, the conditioning performance after use of the nitrogen-containing modified silicone may be insufficient. When the content exceeds 10% by mass, the nitrogen-containing modified silicone is used. When drying, there may be a problem in the feeling of use such as stickiness.

<(B) α-hydroxy acid>
The α-hydroxy acid is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include α-hydroxy-isobutyric acid, α-hydroxyisocaproic acid, α-hydroxy-n-caproic acid, α -Hydroxy-isocaprylic acid, α-hydroxy-n-caprylic acid, α-hydroxy-n-capric acid, α-hydroxystearic acid, malic acid, citric acid, tartaric acid, glycolic acid, lactic acid and the like. Among these, glycolic acid, lactic acid, malic acid, and citric acid are preferable. These may be used individually by 1 type and may use 2 or more types together. Since the α-hydroxy acid has a chelating effect on calcium, by using the α-hydroxy acid, calcium derived from tap water accumulated in the hair can be removed, which improves hair stiffness and softness. The effect of improving the smoothness can be enhanced, and at the same time, the oil represented by the structural formula (2) can be easily penetrated into the hair.

  The content of the α-hydroxy acid is preferably 0.01 to 5% by mass, more preferably 0.05 to 3% by mass, and particularly preferably 0.5 to 2% by mass with respect to the total amount of the hair makeup. When the content is less than 0.01% by mass, it is difficult to obtain the effect of removing calcium accumulated in the hair, and when it exceeds 5% by mass, the stability of the hair cosmetic may be deteriorated. is there.

<(C) Oil represented by Structural Formula (2)>
The oil represented by the structural formula (2) can recover the physical strength of the hair that has been lowered by the damage caused by the permanent wave treatment and the coloring treatment.

In the structural formula (2), r ₁ represents any of an alkyl group having 1 to 22 carbon atoms and an alkenyl group.
The alkyl group or alkenyl group is not particularly limited and may be appropriately selected depending on the intended purpose. For example, an alkyl group or alkenyl group substituted with 1 to 3 hydroxy groups or alkoxy groups having 1 to 6 carbon atoms Is mentioned. In addition to these, an alkyl group or an alkenyl group in which a hydroxy group and an alkoxy group are simultaneously substituted may be mentioned.
Among these, an alkyl group having 1 to 18 carbon atoms, a mono- or di-hydroxyalkyl group having 1 to 18 carbon atoms, an alkyl group having 1 to 18 carbon atoms substituted by an alkoxy group having 1 to 6 carbon atoms, or a hydroxy group And an alkyl group having 1 to 18 carbon atoms substituted by an alkoxy group having 1 to 6 carbon atoms.
Further, among these, an alkyl group having 8 to 16 carbon atoms, a mono- or di-hydroxyalkyl group having 8 to 16 carbon atoms, an alkyl group having 2 to 12 carbon atoms substituted by an alkoxy group having 1 to 6 carbon atoms, Or a C2-C12 alkyl group substituted by a hydroxy group and a C1-C6 alkoxy group is preferable, and an octyl group, a decyl group, a dodecyl group, a myristyl group, a stearyl group, a 2-methylpropyl group, 2-ethylhexyl. Group, methyl branched isostearyl group, 2-hydroxyethyl group, 9-hydroxynonyl group, 2,3-dihydroxypropyl group, 2-methoxyethyl group, 2-hydroxy-3-methoxypropyl group, 9-methoxynonyl group, etc. Are more preferable, and 2-hydroxyethyl group and dodecyl group are particularly preferable.

In the structural formula (2), r ₂ represents either an alkyl group having _{2 to} 34 carbon atoms or an alkenyl group.
The alkyl group or the alkenyl group is not particularly limited and may be appropriately selected depending on the intended purpose. For example, a linear or branched alkyl group, alkenyl group having 1 to 4 carbon atoms, 1 to 4 carbon atoms And an alkylene group having a double bond.
Among these, a C2-C24 linear or branched alkyl group, an alkenyl group, and an alkylene group having a double bond of 1-4 are preferable, and an ethyl group, a propyl group, a butyl group, a hexyl group, and an octyl group. Group, decamethyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, cetyl group, stearyl group, eicosyl group, behenyl group, 1-methylethyl group, 2-ethylpropyl group, 1-methylheptyl group, 2-methyl Heptyl group, 1-butylhexyl group, 2-methyl-5-ethylheptyl group, 2,3,6-trimethylheptyl group, 6-ethyldecyl group, 7-methyltetradecyl group, 7-ethylhexadecyl group, 7, 12-dimethyloctadecyl group, 8,11-dimethyloctadecyl group, 7,10-dimethyl-7-ethylhexadecyl group, oct Rudodeshiru group, more preferably 9,10 dioctyl octadecyl group, cetyl group, stearyl group, eicosyl group, behenyl group, octyldodecyl group is particularly preferred.

In the structural formula (2), r ₃ represents any of a group obtained from cholesterol, phytosterol, and any of these derivatives, a branched alkyl group having 13 to 68 carbon atoms, and a derivative thereof.
Examples of the substituent obtained from any of the cholesterol and derivatives thereof include a cholesteryl group, a cholesteryl palmitate group, a cholesteryl isostearate group, and a lanolin fatty acid cholesteryl group.
As a substituent obtained from either the said phytosterol and its derivative (s), a phytosteryl group etc. are mentioned, for example.
The branched alkyl group having 13 to 68 carbon atoms and the derivative thereof are not particularly limited. For example, the branched alkyl group having 13 to 64 carbon atoms having an alkyl group having 1 to 39 carbon atoms or an alkylene group in the branched chain, Long chain branched alcohol groups and the like. Examples of the C13-64 branched alkyl group having a C1-C39 alkyl group or alkylene group in the branched chain include 7-octyldodecyl isostearate and dinonylhexadecyl groups. The long-chain branched alcohol group is not particularly limited, and examples thereof include a branched alcohol group having 13 to 68 carbon atoms. As the branched alcohol group having 13 to 68 carbon atoms, ceramides, pseudoceramides, glycosphingolipids, sphingophospholipids, sphingosine and derivatives thereof, and alcohol groups obtained from sphinganine and derivatives thereof are preferable.

In the structural formula (2), Y represents any of a polyhydric alcohol having 3 to 5 hydroxyl groups in the molecule and an amino acid.
The polyhydric alcohol or amino acid having 3 to 5 hydroxyl groups in the molecule is not particularly limited as long as it forms a triester with an ester bond with a hydrophobic portion of r _{1 to} r ₃ .
Examples of the polyhydric alcohol having 3 to 5 hydroxyl groups include glycerin, diglycerin, erythritol, sorbitol, glucose and the like.
Examples of the amino acid include glutamic acid and aspartic acid.
As a bonding portion with r _{1 to} r ₃ , a (poly) alkylene group may have a linking portion introduced.
There is no restriction | limiting in particular as a synthesis method of the oil agent represented by the said Structural formula (2).

As content of the oil agent represented by the said Structural formula (2), 0.01-5 mass% is preferable with respect to the said hair cosmetics whole quantity, 0.05-2 mass% is more preferable, 0.5- 2% by mass is particularly preferred. When the content is less than 0.01% by mass, it may be difficult to obtain the effect of restoring the physical strength of the hair. When the content exceeds 5% by mass, the stability of the hair cosmetic may be deteriorated. .
The mass ratio (B: C) between the content of the α-hydroxy acid and the content of the oil represented by the structural formula (2) is preferably 1:99 to 99: 1. Is more preferably 90 to 95: 5, and particularly preferably 15:85 to 90:10.
When the mass ratio (B: C) of the content of the α-hydroxy acid and the content of the oil represented by the structural formula (2) is out of the above range, the effect of preventing hair breakage cannot be sufficiently exhibited. There is.

  As an oil agent represented by the structural formula (2), for example, N-lauroylglutamate dicholesteryl octyldodecyl, which is commercially available from Ajinomoto Co., Inc. under the trade name “El Deu” CL202, also a trade name of PS203. N-lauroylglutamate di (phytosteryl octyldodecyl), commercially available under the trade name “Amitel” LGOD-2 (H), from Japan Emulsion Co., Ltd. Lauroyl glutamate dioctyldedeceth-5 marketed under the trade name LGOD-5 (H) can be mentioned, and in particular, N-lauroylglutamate di (cholesteryl octyldodecyl) is more preferred.

  As the hair cosmetics, in addition to the above essential components, compounding agents usually used in emulsion compositions, for example, surfactants, oils, moisturizers, water-soluble polymers, thickeners, preservatives, antioxidants , Chelating agents, pH adjusters, fragrances, fragrance compositions, pigments, UV absorption, scattering agents, vitamins, amino acids, proteins, plant extracts, vegetable protein hydrolysates, organic acids, inorganic acids, powders Body, colorant, water, etc. can be blended. The optional component is not limited to these.

-Surfactant-
Examples of the surfactant include commonly used anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants.
Examples of the anionic surfactant include alkyl sulfate, alkyl polyoxyethylene sulfate, alkylbenzene sulfonate, α-olefin sulfonate, fatty acid salt, α-sulfo fatty acid salt, ether carboxylate, and phosphoric acid. Examples thereof include alkyl salts, alkyl polyoxyethylene salts of phosphoric acid, dialkyl sulfosuccinic acid ester salts, alkyl alkyl sulfosuccinates, alkenyl succinic acid salts, N-acyl amino acid salts, N-acyl methyl taurine salts and the like. Examples of counter ions (cations) of these anionic surfactants include alkali metal ions, alkaline earth metal ions, alkanolamine ions, and ammonium ions.
Examples of the cationic surfactant include alkyltrimethylammonium salt, dialkyldimethylammonium salt, alkylammonium salt, benzalkonium salt, benzethonium salt, pyridinium salt, imidazolinium salt and the like. Examples of counter ions of these cationic surfactants include halogen ions, methyl sulfate ions (CH ₃ OSO ₃ ⁻ ), and ethyl sulfate ions (CH ₃ CH ₂ OSO ₃ ⁻ ).
Examples of the amphoteric surfactant include alkylcarboxybetaines, alkylsulfobetaines, alkylhydroxysulfobetaines, alkylamidobetaines, imidazolinium betaines, and the like.
Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether, fatty acid polyglycerin ester, fatty acid sucrose ester, fatty acid alkanolamide, and alkylamine. Examples thereof include oxide and amidoamine oxide.

-Oil content-
Examples of the oil include hydrocarbon oils, higher fatty acids, higher alcohols, ester oils and glyceride oils that are generally used.
Examples of the hydrocarbon oil include ozokerite, squalane, squalene, ceresin, paraffin, paraffin wax, liquid paraffin, pristane, polyisobutylene, microcrystalline wax, petrolatum, and the like.
Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). , Isostearic acid, 12-hydroxystearic acid and the like.
Examples of the higher alcohol include lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyl decanol, octyldodecanol, cetostearyl alcohol, 2-decyltetra alcohol. Examples include decinol, cholesterol, phytosterol, POE cholesterol ether, monostearyl glycerin ether (batyl alcohol), monooleyl glyceryl ether (ceralkyl alcohol), and the like.
Examples of the ester oil include diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, and isononanoic acid. Isononyl, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, olein Oleyl acid, octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyrate , Isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptyl unpalmitate Decyl, cholesteryl 12-hydroxystearylate, dipentaerythritol fatty acid ester, isopropyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, N -Lauroyl-L-glutamic acid-2-octyldodecyl ester, diisostearyl malate and the like.
Examples of the glyceride oil include acetoglyceryl, glyceryl triisooctanoate, glyceryl triisostearate, glyceryl triisopalmitate, glyceryl monostearate, glyceryl di-2-heptylundecanoate, glyceryl trimyristate, and isostearic acid myristate. And diglyceryl.
In addition to these oils, for example, avocado oil, linseed oil, almond oil, ibotarou, eno oil, olive oil, cacao butter, kapok wax, kaya oil, carnauba wax, liver oil, candelilla wax, beef fat, beef leg fat, beef bone fat, Hardened beef tallow, Kyonin oil, Whale wax, Hardened oil, Wheat germ oil, Sesame oil, Rice germ oil, Rice bran oil, Sugar cane wax, Sasanqua oil, Saflower oil, Shea butter, Sinagiri oil, Cinnamon oil, Jojoba wax, Shellac wax, Turtle Oil, soybean oil, tea seed oil, camellia oil, evening primrose oil, corn oil, lard, rapeseed oil, Japanese killi oil, nukarou, germ oil, horse fat, persic oil, palm oil, palm kernel oil, castor oil, hardened Castor oil, castor oil fatty acid methyl ester, sunflower oil, grape oil, bayberry wax, jojoba oil, macadamia nut oil, beeswax, Oil, cottonseed oil, cotton wax, molasses, mollusc kernel oil, montan wax, palm oil, hardened palm oil, tricoconut oil fatty acid glyceride, sheep oil, peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate Lanolin fatty acid isopropyl, hexyl laurate, POE lanolin alcohol ether, POE lanolin alcohol acetate, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, egg yolk oil and the like.

-Humectant-
Examples of the humectant include polyhydric alcohols such as ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol, pentanediol, glycerin, polyglycerin, sorbitol, mannitol, trehalose, and amino acids. NMF components such as sodium pyrrolidonecarboxylate, hyaluronic acid, collagen, mucopolysaccharides, water-soluble polymer substances such as chondroitin sulfate, and trimethylglycine.

-Amino acid-
Examples of the amino acids include arginine, glycine, alanine, serine, proline, leucine, isoleucine, valine, threonine, phenylalanine / tryptophan, cysteine, aspartic acid, glutamic acid, lysine, histidine, 2-pyrrolidone-5-carboxylic acid and the like. Can be mentioned. Among these, arginine, glycine, alanine, serine, glutamic acid, proline, leucine, and isoleucine are preferable. These may be used individually by 1 type and may use 2 or more types together.
As the amino acid, L-form or DL-form, acid form or alkali metal salt (sodium salt etc.), alkaline earth metal salt (magnesium salt etc.), inorganic acid salt (hydrochloride etc.), etc. can be used. It is.
0.01-10 mass% is preferable with respect to the said whole hair cosmetics, as for content of the said amino acid, 0.1-5 mass% is more preferable, and 0.1-2 mass% is especially preferable. When the content of the amino acid is less than 0.01% by mass, the effect of imparting moisture to the hair may not be sufficiently exhibited. When the content exceeds 10% by mass, the hair becomes sticky and the stability of the preparation is deteriorated. There is.

-Plant protein hydrolyzate-
The plant protein hydrolyzate is preferably a plant protein-derived peptide represented by the following structural formula (3).
In addition to the plant protein-derived peptide represented by the following structural formula (3), for example, quaternary ammonium derivatives of plant protein-derived peptides, acylated products of plant protein-derived peptides or salts thereof, esters of plant protein-derived peptides Etc. Among these, quaternary ammonium derivatives of plant protein-derived peptides are preferable.
Examples of the plant derived from the plant protein include wheat, pigeon, rye, oat, corn, soybean, almond, cashew nut, sesame, peanut, potato, sweet potato, sweet potato, konjac, potato, rice and the like. .
Examples of the side chains of various amino acids constituting the plant protein-derived peptide include alanine, glycine, valine, leucine, isoleucine, proline, phenylalanine, tyrosine, serine, threonine, methionine, arginine, histidine, lysine, aspartic acid, Examples include asparagine, glutamic acid, glutamine, cystine, and tryptophan. Among these, a hydrolyzate having an amino acid composition derived from wheat or soybean is preferable.
In the structural formula (3), R ₆ represents an amino acid residue. The value of t represents 1 to 5000.

The plant protein-derived peptide of the structural formula (3) can be obtained, for example, by hydrolyzing a plant protein using an acid, an alkali, or a proteolytic enzyme.
By using the plant protein hydrolyzate, the adsorptivity to hair is enhanced, and the action effect of the plant protein-derived peptide can be further exhibited.

  The average molecular weight of the vegetable protein hydrolyzate is preferably from 1.5 to 500,000, more preferably from 200 to 10,000, and particularly preferably from 400 to 1,000.

  Examples of the plant protein hydrolyzate include, for example, Promoce WG of Seiwa Kasei Co., Ltd., WS Series, Gluadin series of Cognis Japan Co., Ltd., and Hydrotricam series of Croda Japan Co., Ltd. And other raw materials. These may be used alone or in combination of two or more.

  As content of the said vegetable protein hydrolyzate, 0.01-10 mass% is preferable with respect to the said whole hair cosmetics, 0.05-5 mass% is more preferable, 0.1-3 mass% Is particularly preferred. When the content is less than 0.01% by mass, the moisturizing effect may not be sufficiently expressed. When the content is more than 10% by mass, too much is accompanied by stickiness and wrinkles, and the stability of the formulation ( Coloring, discoloration, etc.) may deteriorate.

-Organic acid-
Examples of the organic acid include alkyl sulfuric acid, alkyl phosphoric acid, monocarboxylic acid, dicarboxylic acid, hydroxycarboxylic acid, polycarboxylic acid, and acidic amino acid.
Among these, carboxylic acid is preferable, dicarboxylic acid, hydroxycarboxylic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, phthalic acid, L-glutamic acid, L-aspartic acid are more preferable, L -Glutamic acid is particularly preferred.

-Inorganic acid-
Examples of the inorganic acid include phosphoric acid, hydrochloric acid, sulfuric acid and the like.

-Preservative-
Examples of the preservative include, for example, aminoethylsulfonic acid, benzoic acid, sodium benzoate, benzyl benzoate, anteater, liquid phenol, ethanol, sodium edetate, cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, and dry sodium sulfate. , Kanten, dl-camphor, strong sump leather N (trade name: Saneigen F.F.I.), citric acid, sodium citrate, chlorocresol, chlorobutanol, gentisic acid ethanolamide, salicylic acid, sodium salicylate, Dibutylhydroxytoluene, 2,6-di-t-butyl-4-methylphenol, cecept (trade name: manufactured by Seiwa Kasei Co., Ltd.), sorbic acid, potassium sorbate, nitrogen, thymol, dehydroacetic acid, sodium dehydroacetate, 2 -NA Thor, hinokitiol, sucrose, honey, isobutyl paraoxybenzoate, isopropyl paraoxybenzoate, ethyl paraoxybenzoate, butyl paraoxybenzoate, propyl paraoxybenzoate, methyl paraoxybenzoate, paraformaldehyde, phenylethyl alcohol, phenol, proxel GXL ( (Product name: manufactured by Zeneca), benzyl alcohol, boric acid, borax, d-borneol, l-menthol, eucalyptus oil, oxyquinoline sulfate, isopropylmethylphenol, undecylenic acid monoethanolamide, distearyldimethylammonium chloride, stearyl chloride Dimethylbenzylammonium, stearyltrimethylammonium chloride, alkyldiaminoethylglycine hydrochloride, chlorhexyl chloride (gluconic acid) , Orthophenylphenol, cresol, chloramine T, chlorxylenol, chlorphenesin, alkylisoquinolinium bromide solution, domifene bromide, thianthol, trichlorocarbanilide, parachlorophenol, halocarban, 2- (2- Hydroxy-5-methylphenyl) benzotriazole, hexachlorophene, resorcin, phenoxyethanol and the like.

−Powder / Colorant−
As the powder or the colorant, the shape (spherical shape, rod shape, needle shape, plate shape, plate shape, irregular shape, scale shape, spindle shape, etc.) and particle diameter are used as long as they are used in ordinary cosmetics. Regardless of (smoke, fine particles, pigment grade, etc.) and particle structure (porous, non-porous, etc.), any of them can be used. For example, inorganic powder, organic powder, surfactant metal Examples thereof include salt powder, colored pigment, pearl pigment, metal powder pigment, and natural pigment.
Examples of the inorganic powder include pigment grade titanium oxide, zirconium oxide, pigment grade zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, mica, kaolin, selenium. Site, muscovite, synthetic mica, phlogopite, saucite, biotite, lithia mica, silicic acid, anhydrous silicic acid, aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, barium silicate, silicic acid Strontium, metal tungstate, hydroxyapatite, vermiculite, hydrite, bentonite, montmorillonite, hectorite, zeolite, ceramic powder, dicalcium phosphate, alumina, aluminum hydroxide, boron nitride, boron nitride Silica, fine particles of titanium oxide, zinc oxide particles, fine particles of cerium oxide and the like.
Examples of the organic powder include polyamide powder, polyester powder, polyethylene powder, polypropylene powder, polystyrene powder, polyurethane powder, benzoguanamine powder, polymethylbenzoguanamine powder, polytetrafluoroethylene powder, polymethyl methacrylate powder, cellulose, and silk powder. , Nylon powder, 12 nylon, 6 nylon, silicone powder, silicone rubber powder, silicone elastomer spherical powder, styrene / acrylic acid copolymer, divinylbenzene / styrene copolymer, vinyl resin, urea resin, phenol resin, fluorine resin , Silicon resin, acrylic resin, melamine resin, epoxy resin, polycarbonate resin, microcrystalline fiber powder, starch powder, lau Irurijin, and the like.
Examples of the surfactant metal salt powder (metal soap) include zinc stearate, aluminum stearate, calcium stearate, magnesium stearate, zinc myristate, magnesium myristate, zinc cetyl phosphate, calcium cetyl phosphate, and zinc cetyl phosphate. Sodium etc. are mentioned.
Examples of the colored pigment include inorganic red pigments such as iron oxide, iron hydroxide, and iron titanate, inorganic brown pigments such as γ-iron oxide, inorganic yellow pigments such as yellow iron oxide and loess, black iron oxide, Inorganic black pigments such as carbon black, inorganic purple pigments such as manganese violet and cobalt violet, inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide and cobalt titanate, inorganic blue pigments such as bitumen and ultramarine, tar Examples include raked pigments, raked natural pigments, and synthetic resin powders obtained by combining these powders.
Examples of the pearl pigment include titanium oxide-coated mica, titanium oxide-coated mica, bismuth oxychloride, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, fish scale foil, and titanium oxide-coated colored mica.
Examples of the tar pigment include Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227 and Red No. 228. No., Red No. 230, Red No. 401, Red No. 505, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Yellow No. 204, Yellow No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue 404, Green 3, Green 201, Green 204, Green 205, Orange 201, Orange 203, Orange 204, Orange 206, Orange 207, and the like.
Examples of the natural pigment include powders selected from carminic acid, laccaic acid, calsamine, bradylin, crocin, and the like.
As the powder or the colorant, a powder composite or a product treated with a general oil, a silicone oil, a fluorine compound, a surfactant, or the like can be used as long as the effects of the present invention are not hindered. Among these, fluorine compound treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil agent treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, amino acid treatment, inorganic The surface treatment is preferably performed in advance by compound treatment, plasma treatment, mechanochemical treatment or the like. Moreover, these processes may be used individually by 1 type, and may use 2 or more types together.
The said powder or the said coloring agent may be used individually by 1 type, and may use 2 or more types together.

-Plant extracts-
As the plant extracts, for example, natural plant extract components, seaweed extract components, and herbal medicine components are preferable. Specifically, Ashitaba extract, Avocado extract, Achacha extract, Altea extract, Arnica extract, Aloe extract, Apricot extract, Apricot kernel extract, Ginkgo biloba extract, Turmeric extract, Oolong tea extract, Echinacea leaf extract, Ogon extract, Oubakku Extract, barley extract, hypericum extract, nettle extract, Dutch mustard extract, orange extract, seawater dried product, hydrolyzed elastin, hydrolyzed wheat powder, hydrolyzed silk, chamomile extract, carrot extract, kawara mugi extract, calcade extract, kiwi extract, Kina extract, Cucumber extract, Guanosine, Gardenia extract, Kumazasa extract, Clara extract, Walnut extract, Grapefruit extract, Clematis extract, Chlorella extract, Kuwaeki , Gentian extract, black tea extract, yeast extract, burdock extract, rice bran extract, rice germ oil, comfrey extract, collagen, bilberry extract, saicin extract, psycho extract, saitai extract, salvia extract, savon extract, sasa extract, hawthorn Extract, Salamander Extract, Shiitake Extract, Giant Extract, Shikon Extract, Perilla Extract, Linden Extract, Shimotake Extract, Peonies Extract, Ginger Root Extract, Birch Extract, Horsetail Extract, Prunus Kizuta Extract, Hawthorn Extract, Elderberry Extract, Achillea millefolium Extract, Mint extract, sage extract, mallow extract, nematode extract, assembly extract, soy extract, tisoiso extract, thyme extract, chigaya extract, Nippi extract, Toki extract, Toki-Senka extract, Tonin extract, Spruce extract, Dokudami extract, Tomato extract, Natto extract, Carrot extract, Garlic extract, Novara extract, Bacmond extract, Lotus extract, Parsley extract, Honey, Parietalia extract, Hikiokoshi extract, Bisabolol, dandelion extract, burdock extract, butterfly extract, butcher bloom extract, grape extract, propolis, loofah extract, safflower extract, peppermint extract, bodaiju extract, button extract, hop extract, pine extract, citrus extract, peach extract, peach extract, cornflower extract , Eucalyptus extract, Yukinoshita extract, Yuzu extract, Yokuinin extract, Artemisia extract, Lavender extract, Lettuce extract, Les Examples include mon extract, lotus extract, rose extract, roman chamomile extract, royal jelly extract and the like. These may be used individually by 1 type and may use 2 or more types together.

-Fragrance-
Examples of the fragrance and the fragrance composition include the fragrance components described in JP-A-2003-300111 [0021] to [0035] and [0050], and fragrance solvents.
The said fragrance | flavor composition means the mixture which consists of a fragrance | flavor component, a solvent, a fragrance | flavor stabilizer, etc.
Examples of the fragrance stabilizer include dibutylhydroxytoluene, butylhydroxyanisole, vitamin E and its derivatives, catechin compounds, flavonoid compounds, polyphenol compounds, and the like, among these, dibutylhydroxytoluene.
As content of the said fragrance | flavor stabilizer, it is preferable that it is 0.0001-10 mass% with respect to the said whole fragrance | flavor composition, and 0.001-5 mass% is more preferable.
As content of the said fragrance | flavor solvent, it is preferable that it is 0.1-99 mass% with respect to the said whole fragrance | flavor composition, and it is more preferable that it is 1-50 mass%.
As content of the said fragrance | flavor composition, it is preferable that it is 0.005-40 mass% with respect to the said whole hair cosmetics, and it is more preferable that it is 0.01-10 mass%.

-PH adjuster-
There is no restriction | limiting in particular as said pH adjuster, According to the objective, it can select suitably, For example, an acid, a base, and these salts are mentioned. Among these, phosphoric acid, hydrochloric acid, triethanolamine, tripropanolamine and the like are preferable.

  In the hair cosmetic composition of the present invention, the pH value is preferably 2.0 to 7.0, more preferably 2.0 to 6.0 under the temperature condition of 25 ° C. by adding the pH adjuster. 2.5 to 4.0 is particularly preferable. When the pH value exceeds 7, it is difficult to obtain the effect of removing calcium from hair by α-hydroxy acid, and the effect of facilitating the penetration of the oil represented by the structural formula (2) into the hair is difficult to obtain. There is. When the pH value is less than 2, for example, a raw material having an ester bond in the hair cosmetic is likely to be hydrolyzed, and the stability of the hair cosmetic may be deteriorated.

<Hair cosmetic formulation>
Examples of the dosage form of the hair cosmetic include an aqueous solution, an ethanol solution, an emulsion, a suspension, a gel, a solid, an aerosol, and a powder.
Examples of the form when applied to the scalp and hair include shampoo, rinse, treatment, conditioner, hair liquid, hair tonic, hair nourishing agent, hair restorer, hair spray and the like. Among these, use as a rinse, a conditioner, a hair liquid, a hair tonic, a hair nourishing agent, and a hair restoring agent is preferable from the viewpoint of effects.

<Production method>
There is no restriction | limiting in particular as a manufacturing method of the said hair cosmetics, According to the objective, it can select suitably, It can prepare according to a conventional method. Examples of the apparatus used for the preparation include a plurality of stirring blades capable of applying shear force and mixing the whole, for example, a stirring apparatus provided with a propeller, a turbine, a disper, and the like. Among these, an ajihomo mixer, a backflow mixer, and a hive rod mixer are preferable.

<Container>
The hair cosmetic can be used by being filled in a container. The container for the hair cosmetic is not particularly limited and can be appropriately selected according to the purpose. For example, an aluminum laminate tube, an EVAL tube, an aluminum tube, a glass-deposited plastic tube, etc., mechanically or by differential pressure Examples include dispenser containers, squeeze containers, laminate film containers, dropper containers, stick containers, bottle containers, and pump-type containers.
Examples of the material of the laminate film include polyethylene, polyethylene terephthalate, polyester, biaxially stretched polypropylene, unstretched polypropylene, polyacrylonitrile, ethylene vinyl acetate copolymer and other synthetic resins, paper, aluminum vapor deposited plastic, and the like. Moreover, as a structure of the said laminate film, it has usually two or more layers, and generally 2-5 layers are preferable in consideration of strength, flexibility, weather resistance and the like.
The material of the bottle is appropriately selected from, for example, resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, ethylene-vinyl alcohol resin, acrylonitrile / styrene resin, ABS resin, polyamide, and glass. Further, the structure of the container is preferably a single layer or a layer structure of two or more layers.

  Examples of the present invention will be described below, but the present invention is not limited to these examples.

(Examples 1-38, Comparative Examples 1-7)
Conditioner agents were prepared as hair cosmetics of Examples 1 to 38 and Comparative Examples 1 to 7 according to the compositions shown in Tables 1 to 5 below. Specifically, a cationic surfactant, a higher alcohol, and an oily component compatible with them were heated and dissolved at 40 to 80 ° C. to prepare an oil phase. Further, an aqueous component was added to water, and the mixture was heated and dissolved at 25 to 80 ° C. to prepare an aqueous phase. Thereafter, the oil phase component was added to the water phase component, and the mixture was stirred with an Ajihomo mixer (TK Ajihomomixer HV-M Special Machine Industry: special machine industry) to form a liquid crystal. Silicone is added to the obtained liquid crystal emulsion, an aqueous phase component is further added, and the mixture is gradually cooled to room temperature while stirring with an Ajihomo mixer (TK Ajihomomixer HV-M special machine industry: special machine industry). Then, a fragrance and purified water were added to adjust the pH to prepare a sample.
The oil phase component is an oil agent, a surfactant, an oil component, and a humectant represented by the structural formula (2). The aqueous phase component is an α-hydroxy acid, a vegetable hydrolyzate. Amino acids, polymers, preservatives.
In addition, the description of AI (%) in a table | surface means the pure part, and when using the component used for an Example disperse | distributing or melt | dissolving in a solvent, it has shown the mass% of the component itself. Moreover, the description of the balance in a table | surface means that it mix | blends so that the sum total of each component of hair cosmetics may be 100%.

(1) Evaluation method For 30 women in their 20s to 30s who are coloring (hair length: short to semi-long to long), actual use evaluation was performed. Evaluation is performed after washing the hair with a shampoo normally used by panelists, and then applying the normal amount of the hair cosmetics obtained in Examples 1 to 38 and Comparative Examples 1 to 7, rinsing, and washing the hair normally. Went. After using the hair cosmetics obtained in Examples 1 to 38 and Comparative Examples 1 to 7 for 2 weeks in a row, the smoothness of the finish, the moist feeling of the finish, the softness of the hair, and the feeling of reduced hair According to the following scores.

-Score-
6: More than 25 of 30 respondents answered 5: More than 20 respondents answered 20-24 out of 30 4: 15-19 respondents answered 30: 3: Excellent 10 to 14 out of 30 2: 5 to 9 out of 30 respondents 1: Less than 5 out of 30 respondents out of 30

The product names and manufacturers of the compounds * 1 to * 65 in Tables 1 to 5 are shown in Tables 6 and 7 below.

Fragrances A to D in Tables 1 to 5 are shown in Table 8 below.

  From the results of Tables 1 to 5, it was found that the hair cosmetics of Examples 1 to 38 exhibited a conditioning effect that imparts smoothness, moisture, softness, and a hair-breaking prevention effect to the hair. On the other hand, although the comparative example 1 which does not contain a specific nitrogen-containing modified silicone exhibited the effect of preventing hair breakage, it was found that the smoothness and moist feeling of the hair were insufficient. Further, it was found that Comparative Example 2 containing no α-hydroxy acid has insufficient hair softness and does not sufficiently exhibit the effect of preventing hair breakage. Furthermore, it turned out that the comparative examples 3-7 which do not contain the oil agent represented by Structural formula (2) do not fully exhibit the hair-break prevention effect.

The hair cosmetic composition of the present invention is a method of effectively adsorbing hydrophobic silicone on the hair surface and imparting a repairing effect to the inside of the hair with respect to the hair that has been made hydrophilic by permanent wave treatment or coloring treatment. It is possible to provide a hair cosmetic that eliminates troubles such as broken hair by reducing the tangling of hair and the frictional resistance between the hairs during shampooing and combing, and further restoring the physical strength of the hair. Furthermore, regardless of the type and type of hair cosmetics, for example, shampoos, rinses, treatments that are washed off after application, treatments that are not washed off after application, styling agents, hair styling agents, hair dyes, bleaches, permanents. It can be used for hair cosmetics such as waving agents, hair restorers, and hair nourishing agents.

Claims (5)

(A) a nitrogen-containing modified silicone represented by the following structural formula (I), (B) an α-hydroxy acid, and (C) an oil represented by the following structural formula (2). Hair cosmetics.
In the structural formula (I), R ₁ and R ₆ may be the same or different from each other, and represent either a methyl group or a hydroxyl group. R _{2 is, - (CH 2) n-} A 1, and _{- (CH 2) n-NHCO-} (CH 2) represents any of m-A _1. A ₁ represents any _one of —N (R ₃ ) (R ₄ ) and —N ⁺ (R ₃ ) (R ₄ ) (R ₅ ) · X ⁻ . R _{3 to} R ₅ may be the same as or different from each other, and represent any one of a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a phenyl group, and — (CH ₂ ) ₂ —NH _2. To express. X ⁻ represents any of a fluorine ion, a chlorine ion, a bromine ion, an iodine ion, a methyl sulfate ion, and an ethyl sulfate ion. The values of m and n may be the same as or different from each other, and represent an integer of 1 to 12. The values of p and q represent the degree of polymerization of the polysiloxane, and may be the same or different from each other. The value of p + q represents 3000 to 20,000, and the value of q / p is 1 / 10,000 to 1/500.
In the structural formula (2), r ₁ represents any of an alkyl group having 1 to 22 carbon atoms and an alkenyl group. r ₂ represents either an alkyl group having _{2 to} 34 carbon atoms or an alkenyl group. r ₃ represents cholesterol, phytosterol, and groups derived from any of these derivatives, branched alkyl group having 13 to 68 carbon atoms, and any of its derivatives. Y represents either a polyhydric alcohol having 3 to 5 hydroxyl groups in the molecule or an amino acid. (A) The nitrogen-containing modified silicone represented by any one of the following structural formulas (1) and (3), (B) α-hydroxy acid, and (C) represented by the following structural formula (2) A hair cosmetic characterized by containing an oil.
In the structural formula (1), R ₁ represents either a methyl group or a hydroxyl group. R _{2 is, - (CH 2) n-} A 1, and _{- (CH 2) n-NHCO-} (CH 2) represents any of m-A _1. A ₁ represents any _one of —N (R ₃ ) (R ₄ ) and —N ⁺ (R ₃ ) (R ₄ ) (R ₅ ) · X ⁻ . R _{3 to} R ₅ may be the same as or different from each other, and each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or a phenyl group. X ⁻ represents any of a fluorine ion, a chlorine ion, a bromine ion, an iodine ion, a methyl sulfate ion, and an ethyl sulfate ion. The values of m and n may be the same as or different from each other, and represent an integer of 1 to 12. The values of p and q represent the degree of polymerization of the polysiloxane, and may be the same or different from each other. The value of p + q represents 3000 to 20,000, and the value of q / p is 1 / 10,000 to 1/500.
In the structural formula (3), the values of p and q represent the degree of polymerization of the polysiloxane, and may be the same or different from each other. The value of p + q is 3,000 to 20,000. The value of q / p represents 1 / 10,000 to 1/500.
In the structural formula (2), r ₁ represents any of an alkyl group having 1 to 22 carbon atoms and an alkenyl group. r ₂ represents either an alkyl group having _{2 to} 34 carbon atoms or an alkenyl group. r ₃ represents cholesterol, phytosterol, and groups derived from any of these derivatives, branched alkyl group having 13 to 68 carbon atoms, and any of its derivatives. Y represents either a polyhydric alcohol having 3 to 5 hydroxyl groups in the molecule or an amino acid. (A) a nitrogen-containing modified silicone represented by the following structural formula (1), (B) an α-hydroxy acid, and (C) an oil represented by the following structural formula (2). Hair cosmetics.
In the structural formula (1), R ₁ represents either a methyl group or a hydroxyl group. R _{2 is, - (CH 2) n-} A 1, and _{- (CH 2) n-NHCO-} (CH 2) represents any of m-A _1. A ₁ represents any _one of —N (R ₃ ) (R ₄ ) and —N ⁺ (R ₃ ) (R ₄ ) (R ₅ ) · X ⁻ . R _{3 to} R ₅ may be the same as or different from each other, and each represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or a phenyl group. X ⁻ represents any of a fluorine ion, a chlorine ion, a bromine ion, an iodine ion, a methyl sulfate ion, and an ethyl sulfate ion. The values of m and n may be the same as or different from each other, and represent an integer of 1 to 12. The values of p and q represent the degree of polymerization of the polysiloxane, and may be the same or different from each other. The value of p + q represents 3000 to 20,000, and the value of q / p is 1 / 10,000 to 1/500.
In the structural formula (2), r ₁ represents any of an alkyl group having 1 to 22 carbon atoms and an alkenyl group. r ₂ represents either an alkyl group having _{2 to} 34 carbon atoms or an alkenyl group. r ₃ represents cholesterol, phytosterol, and groups derived from any of these derivatives, branched alkyl group having 13 to 68 carbon atoms, and any of its derivatives. Y represents either a polyhydric alcohol having 3 to 5 hydroxyl groups in the molecule or an amino acid.   The content of the nitrogen-containing modified silicone (A) is 0.05 to 10% by mass, the content of the α-hydroxy acid (B) is 0.01 to 5% by mass, and is represented by the structural formula (2). The hair cosmetic composition according to any one of claims 1 to 3, wherein the content of the oil agent (C) is 0.01 to 5 mass%.   The hair cosmetic composition according to any one of claims 1 to 4, which has a pH value of 2.0 to 7.0.