| 摘要 |
PROBLEM TO BE SOLVED: To obtain an oxidative hair dyeing material having good applicability and capable of carrying out a durable dyeing by bringing to contain a 3,4,5- triaminopyrazole derivative as a color developing ingredient. SOLUTION: This oxidative hair dyeing material contains 0.01-3wt.% 3,4,5- triaminopyrazole of the formula (R<1> is H, a 1-4C alkyl or a 2-4C hydroxyalkyl; R<2> is H, a 1-4C alkyl or a 2-4C hydroxyalkyl) or its water soluble salt as a color developing ingredient. A coupling ingredient (e.g.α-naphthol) is combined with the color developing agent and the total amount of the both agents is 0.1-5wt.%. Further, other coloring ingredients (e.g. 6-amino-2-methylphenol) can be blended as assistants. It is preferable to prepare in a form of cream, gel or emulsion. Especially the hair dyeing material is excellent in durabilities against the sun, washing and abrasion and can express the hair in deep, luminous red-based color and natural hue.
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