| abstract |
Compositions for the oxidation dyeing of keratin fibers, comprising, as oxidation base, at least one para-aminophenol, of formula (I) and/or at least one acid-addition salt thereof:in which:R1 represents a hydrogen atom, a linear or branched C1-C4 alkyl radical or a C1-C4 trifluoroalkyl radical,R2 and R3 independently represent a hydrogen atom, a C1-C4 alkyl radical or a C1-C4 monohydroxyalkyl radical, andX, Y and Z independently represent a carbon, nitrogen, oxygen or sulphur atom, wherein the bonds XY and YZ are single or double bonds;a dyeing process using these compositions, novel para-aminophenols and a process for their preparation. |