| abstract |
The invention relates to a process for dyeing keratin fibers, comprising the simultaneous or sequential application of a composition (A) containing a compound of formula (I): in which : R₁ denotes hydrogen, alkyl, acetyl, benzoyl, phenyl or C₁-C₄ carboxyalyl; R₂ and R₃ denote hydrogen, alkyl, alkoxy, hydroxyalkyl, amino, halogen, nitro, alkylphenyl, phenyl, alkylamino, hydroxyalkylamino; and a composition (B) containing at least one compound of formula (II): in which : R₄ and R₆ denote hydrogen, alkyl; R₅ denotes hydrogen, alkyl, COOR 'where R' is hydrogen or alkyl; Z₁ represents hydrogen, halogen, alkyl, alkoxy or hydroxyl; Z₂ represents hydrogen or alkyl or a compound of formula (III): in which : R₇ and R₈ denote hydrogen or alkyl; X₁ and X₂ represent hydrogen or NH₂; R₉ denotes hydrogen, alkyl, alkoxy; as well as the compositions used. |