| 摘要 |
The disclosure relates to a method for dyeing keratinous fibers by applying, to said fibers, i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, and iv) at least one (bi)carbonate, wherein the method for coloring keratinous fibers is carried out in at least two stages, and wherein the at least one (bi)carbonate and the at least one metal salt are applied in separate stages. The disclosure also relates to a ready-to-use cosmetic composition comprising i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate, and water in an amount greater than or equal to 50% by weight of the total weight of the composition. The disclosure also relates to a multicompartment device comprising from 2 to 5 compartments comprising from 2 to 5 compositions in which the ingredients i) at least one entity chosen from ortho-diphenol and derivatives thereof, ii) at least one metal salt, iii) hydrogen peroxide or at least one system which generates hydrogen peroxide, iv) at least one (bi)carbonate, and water are distributed, the water being present in at least one of the 2 to 5 compositions, the other 1 to 4 compositions being aqueous or pulverulent, and the water being present in a total amount greater than or equal to 50% by weight of the total weight of the 2 to 5 compositions.
|
