| abstract |
The invention relates to a composition for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising at least one pyrazolin-4, 5-dione and at least one aromatic primary amine. Said composition makes it possible to dye keratin fibers in the absence of an oxidizing agent in powerful, varied, resistant shades which are less selective than those of the prior art. The invention also relates to the dyeing methods and devices using said composition. |