New combination of oxidation dye precursors, useful particularly for dyeing human hair, comprises diaminopyrazole, m-aminophenol and m-phenylenediamine derivatives

摘要

Composition (A) for dyeing keratinic fibers, especially human hair, contains, in a cosmetic carrier, at least one each of diaminopyrazole compound (I); substituted m-aminophenol (II) and m-phenylenediamine (III). Composition (A) for dyeing keratinic fibers, especially human hair, contains, in a cosmetic carrier, at least one each of diaminopyrazole compound of formula (I); substituted m-aminophenol of formula (II) and m-phenylenediamine of formula (III). R1hydrogen, linear or branched 1-6C alkyl, 1-4C monohydroxyalkyl, 2-4C polyhydroxyalkyl, 1-4C aminoalkyl, phenyl (optionally substituted by nitro, trifluoromethyl, amino or 1-4C alkylamino) or benzyl (optionally substituted by halo, 1-4C alkyl or alkoxy, methylenedioxy or amino); R2halo or 1-4C alkoxy; R3hydrogen, 1-4C alkoxy, 1-4Caminoalkoxy, 1-4C monohydroxyalkoxy, 2-4C polyhydroxyalkoxy, 2,4-diaminophenoxyalkoxy or 2,4-diaminophenylalkyl; R4hydrogen, 1-4C alkyl, 1-4C monohydroxyalkyl or 2-4C polyhydroxyalkyl. [Image].