| abstract |
Oxidation dyes comprising as a first oxidation dye in a cosmetic carrier an oxidation base of formula (I), in which R1 is an NH 2 group or a hydroxyl group and, as coupler, a combination of at least a green coupling compound of formula (II), and at least one second violet coupling compound of formula (III), give, by oxidative coupling on keratin fibers, for example on human hair, shiny black colorations of improved resistance . |