abstract |
The invention relates to high-performance and low irritant agents for lightening and/or colouring keratin fibres, in particular human hair. Said agents contain, in relation to their weight, 0,001 to 15 wt.% of one or more N,N'-oxalyldiazoles and/or oximidyldiazoles and, preferably, in addition to, 0,001 to 5 wt.% of one or more oxidation dye precursors and/or direct dyes. |