Brightening - and / or colorants with improved skin compatibility

摘要

Power is increased and irritation connecting means to be reduced for the brightening and / or dyeing of keratin fibers, especially human hair, contain - in each case based on their weight - 0,001 to 5 w -% of one or more oxidation dye precursors and / or substantive dyes as well as 0,1 to 20 w -% of at least one imidazole compound according to formula (i) and / or their physiologically tolerated salts whereinR¹ stands for a hydrogen atom, an optionally substituted aryl group or a (c₁-C.₆)-Alkyl group,R² stands for a hydrogen atom, a carboxaldehyde group, a (c₁-C.₆)-Alkyl group or a nitro group,R³ stands for a hydrogen atom, a carboxy - (c₁-C.₆)-alkyl group, an amino - (c₁-C.₆)-alkyl group, a carboxyl group, a carboxaldehyde group, a (c₁-C.₆)-Alkyl group, a nitro group, a 2 - amino - 3 - hydroxypropyl group or a group - ch₂-Ch (nh₂)-Cooh,R⁴ stands for a hydrogen atom, a carboxaldehyde group or a carboxyl group.