A method for dyeing of keratin fibers in two stages, by amendment of the ph - value

摘要

P the invention relates to a process for dyeing keratin fibers. / p & & p & this process consists in a first step to be treated, the fibers with a first composition to a first ph and containing the first treatment agents of these fibers and in a second step and before any rinsing to be treated, the fibers that have undergone the first treatment with a second composition to a second ph, containing the second treatment agents of these fibers, the ph being chosen so as to modify the ph of the assembly of the two compositions which are held on the fibers in order to promote and / or modification of the action of the agents contained in at least one of said compositions, at least one of these compositions containing one or more dyes to the keratin fibers. / p & & p & this process makes it possible to use in combination, colorants, having the characteristics of stability, solubility and efficacy. / p