| abstract |
(57) [Summary] [Problem] To provide a hair dye capable of dyeing hair in a vivid color tone, having high fastness, and not directly losing the color of the dye during the storage stage. SOLUTION: In the two-part hair dye, the first part is (A) A precursor, (B) a metadiaminobenzene type, a metaaminophenol type, a pyridine type or a naphthol type coupler, (C) a cationic direct dye (1) [R 1 is (substituted) C 1 -C 4 Alkyl group. R 2 is H, a C 1 -C 4 alkyl group or a cyano group. Z is N or CH. The R is H or C 1 -C 4 alkyl group, R 3 and R 4 represent H, a C 1 -C 4 alkyl group, a C 1 -C 4 alkoxy group, an amino group or a halogen atom, or R and R 3 together form an adjacent N atom and a C atom on the ring Forming a 5- to 6-membered ring. An - is an anion. A hair dye containing (D) an alkali agent, (E) a reducing agent, and (F) water and having a pH of 8 to 12. Embedded image |