Hair treatment composition
Disclosed is a pretreatment agent which can achieve a chemical treatment such as the formation of permanent waves or hair-dye uniformly only by pre-treating hair with the pretreatment agent, and which can impart smooth and soft touch to hair as if a hair treatment is applied to the hair after the chemical treatment. Specifically disclosed is a hair treatment composition which is characterized by comprising (A) a tertiary amine, (B) a quaternary ammonium salt and (C) a higher alcohol, wherein the ratio of the content of the higher alcohol to the total content of the tertiary amine and the quaternary ammonium salt is 0.1 to 1.0 by weight and the pH value of the whole composition is 7.0 or higher.
1. A hair treatment composition comprising:
(A) a tertiary amine represented by the following formula (I):
(wherein R 1 may be the same or different and each represents a C 1-3 alkyl group or benzyl group which may optionally be substituted by a hydroxyl group; and R 2 represents a C 8-36 straight chain or branched chain alkyl group which may optionally be substituted by a hydroxyl group or a R 3 -(Y)—(Z)-group, in which R 3 is a C 8-36 straight chain or branched chain alkyl group which may optionally be substituted by a hydroxyl group; Y is a linking group selected from an amide linkage (—CONH—), an ether linkage (—O—), and an ester linkage (—COO—); and Z is a linking group selected from —CH 2 CH 2 CH 2 — and —CH 2 CH(OH)CH 2 —);
(B) a quaternary ammonium salt represented by the following formula (II):
(wherein R 4 , R 5 , R 6 , and R 7 may be the same or different with at least one of R 4 , R 5 , R 6 , and R 7 representing a C 3-36 straight chain or branched chain alkyl group or alkenyl group while each of the rest representing a C 1-3 alkyl group or benzyl group which may optionally be substituted by a hydroxyl group; and X − represents an anion); and
(C) a higher alcohol,
characterized in that a ratio ((C)/[(A)+(B)]) of an amount of (C) higher alcohol to a total amount ([(A)+(B)]) of (A) tertiary amine and the (B) quaternary ammonium salt is within a range of 0.1 to 1.0 ; and
that the composition as a whole has a pH of 7.0 or more.
2. The hair treatment composition according to claim 1 , characterized in that:
an amount of (A) tertiary amine is 0.01 to 10% by mass;
an amount of (B) quaternary ammonium salt is 0.01 to 10% by mass; and
an amount of (C) higher alcohol is 0.01 to 10% by mass.
3. The hair treatment composition according to claim 1 , characterized in that:
(A) tertiary amine is one or a mixture of two selected from N-(2-hydroxy-3-stearoxypropyl)-N,N-dimethylamine and dimethylaminopropylamide stearate.
4. The hair treatment composition according to claim 1 , characterized in that
(B) quaternary ammonium salt is one or a mixture of two selected from lauryltrimethylammonium chloride and stearyltrimethylammonium chloride.
5. The hair treatment composition according to claim 1 , characterized in that:
(C) higher alcohol is one or a mixture of two or more selected from stearyl alcohol, behenyl alcohol, oleyl alcohol, and cetostearyl alcohol.
6. The hair treatment composition according to claim 2 , characterized in that:
(A) tertiary amine is one or a mixture of two selected from N-(2-hydroxy-3-stearoxypropyl)-N,N-dimethylamine and dimethylaminopropylamide stearate.
7. The hair treatment composition according to claim 2 , characterized in that:
(B) quaternary ammonium salt is one or a mixture of two selected from lauryltrimethylammonium chloride and stearyltrimethylammonium chloride.
8. The hair treatment composition according to claim 3 , characterized in that:
(B) quaternary ammonium salt is one or a mixture of two selected from lauryltrimethylammonium chloride and stearyltrimethylammonium chloride.
9. The hair treatment composition according to claim 2 , characterized in that:
(C) higher alcohol is one or a mixture of two or more selected from stearyl alcohol, behenyl alcohol, oleyl alcohol, and cetostearyl alcohol.
10. The hair treatment composition according to claim 3 , characterized in that:
(C) higher alcohol is one or a mixture of two or more selected from stearyl alcohol, behenyl alcohol, oleyl alcohol, and cetostearyl alcohol.
11. The hair treatment composition according to claim 4 , characterized in that:
(C) higher alcohol is one or a mixture of two or more selected from stearyl alcohol, behenyl alcohol, oleyl alcohol, and cetostearyl alcohol.