'LIGHTENING AND/OR COLOURING COMPOSITIONS WITH IMIDAZOLES AND AMINO ALCOHOLS'

摘要

Performance-enhanced compositions for lightening and/or colouring keratin fibres, more particularly human hair, and which may also be given a low-ammonia or ammonia-free formulation, contain - based in each case on their weight - 0.001% to 8% by weight of one or more oxidation dye precursors and/or direct dyes; 1% to 20% by weight of at least one imidazole compound of formula (I) and/or the physiologically compatible salts thereof, in which R¹ stands for a hydrogen atom, an optionally substituted aryl group or a (C₁-C₆)-alkyl group, R² stands for a hydrogen atom, a carboxaldehyde group, a (C₁-C₆)-alkyl group or a nitro group, R³ stands for a hydrogen atom, a carboxy-(C₁-C₆)-alkyl group, an amino-(C₁-C₆)-alkyl group, a carboxyl group, a carboxaldehyde group, a (C₁-C₆)-alkyl group, a nitro group, a 2-amino-3-hydroxypropyl group or a -CH₂-CH(NH₂)-COOH group, and R⁴ stands for a hydrogen atom, a carboxaldehyde group or a carboxyl group; and 0.1% to 20% by weight of at least one amino alcohol compound of the formula (II) in which R₁, R₂ and R₃ independently of one another are selected from -H, -CH₃, -CH₂CH₃, -CH₂OH, -(CH₂)₂CH₃, -CH(CH₃)₂, -(CH₂)₃CH₃, -CH(CH₃)CH₂CH₃, -CH₂CH(CH₃)₂, or other alkyl radicals, alkenyl radicals or optionally substituted aryl radicals.