| abstract |
The present invention relates to dyeing keratin materials using two colorless dye precursors, at least one of which contains disulfide / thiol units, said precursors chemically reacting together and in situ. It relates to dyeing, forming a color. The method according to the invention makes it possible to solve the problems caused by the color produced during the method in the context of a particular variant, while at the same time not reducing the effect of coloring and in particular the effectiveness of the lightning effect. become. The resulting coloration is even more intense, colored, with low selectivity and is not subject to external factors such as sunlight, sweat and especially shampoos. [Selection figure] None |