Conditioner

1. A method for treating hair, comprising: treating hair with a conditioner composition comprising a tertiary amine represented by the following formula (1):

wherein, R 1 represents a linear or branched C 6-24 alkyl or alkenyl group, R 2 and R 3 are the same or different and each represents a C 1-6 alkyl group or —(AQ) n H in which A represents a C 2-4 alkylene group, and n is an integer from 1 to 6, wherein individual A radicals are the same or different and are arranged in any sequence or a salt thereof.

2. A method for treating hair, comprising:

treating hair with a hair cosmetic composition comprising a conditioning composition comprising a tertiary amine represented by the following formula (1):

wherein, R 1 represents a linear or branched C 6-24 alkyl or alkenyl group, R 2 and R 3 are the same or different and each represents a C 1-6 alkyl group or —(AO) n H in which A represents a C 2-4 alkylene group, and n is an integer from 1 to 6, wherein individual A radicals are the same or different and are arranged in any sequence or a salt thereof.

3. The method according to claim 1 , wherein said condition composition has a pH ranging from 2 to 8.

4. The method according to claim 1 , wherein R 2 and R 3 each represents a C 1-6 alkyl group.

5. The method of claim 1 , wherein said conditioner composition further comprises (c) an oily component.

6. The method according to claim 1 , wherein said conditioner composition further comprising (d) a quaterary ammonium salt.

7. The method according to claim 6 , wherein said conditioner composition further comprises a surfactant other than the tertiary amine or a salt thereof or the quaternary ammonium salt.

8. The method according to claim 6 , wherein said guaternary ammonium salt has the formula:

wherein at least one of R 4 , R 5 , R 6 and R 7 is a linear or branched alkyl or alkenyl group that is optionally substituted by alkoxy, alkenyloxy, alkanoylamino, alkenoylamino, alkanoyloxy or alkenoyloxy, each containing from 12 to 28 carbon atoms and the remaining groups are benzyl, C 1-5 alkyl, hydroxyalkyl or polyoxyethylene whose added molar number is not more than 10.

9. The method according to claim 6 , wherein the weight ratio of tertiary amine to quaternary ammonium salt is 1/4 to 20/1.

10. The method according to claim 1 , wherein said conditioner composition, other than the tertiary amine, further comprises at least one cationic, anionic, nonionic or amphoteric surfactant in an amount which does not impair the function of the tertiary amine on the hair.

11. The method according to claim 1 , wherein said conditioner composition, further comprises a thickener of a cationic copolymer in an amount of 0.01 to 20 wt % based on the weight of the conditioner composition.

12. The method according to claim 1 , wherein said conditioner composition further comprises a thickening polymer in an amount of 0.01 to 20 wt % based on the weight of the conditioner composition.

13. The method according to claim 5 , wherein said oily component is present in amount of 0.01 to 30 wt % based on the weight of the conditioner.

14. The method according to claim 5 , wherein the oily component is a higher alcohol, an ester oil, a silicone, a light liquid isoparaffin, a light liquid paraffin, paraffin, wax, squalane or a glyceride.

15. The method of claim 1 , wherein said conditioner composition further comprises at least one compound selected from the group consisting of inorganic acids and organic acids.

16. The method according to claim 15 , wherein the mole ratio of the at least one inorganic acid or organic acid to the tertiary amine ranges from 0.1 to 10.

17. The method according to claim 15 , wherein the inorganic acid is hydrochloric acid, phosphoric acid or sulfuric acid and said organic acid is a monocarboxylic acid, a dicarboxylic acid, a hydroxycarboxylic acid, a polycarboxylic acid or an amino acid.