HAIR DYEING PROCESS USING A DIHYDROXYFLAVONOID, NEOFLAVANOL OR NEOFLAVANONE DERIVATIVE, MANGANESE SALTS, HYDROGEN PEROXIDE, (BI)CARBONATES, ALKALINE AGENTS, AND METAL SALTS

摘要

The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in which said fibres are treated with one or more cosmetic compositions containing, taken together or separately in said composition(s), the following ingredients: a) one or more dihydroxyflavonoid, neoflavanol or neoflavanone derivative(s); b) one or more manganese salt(s); c) hydrogen peroxide or one or more hydrogen peroxide-generating system(s); d) one or more (bi)carbonate(s) or one or more bicarbonate-generating system(s); e) one or more alkalinizing agent(s) different from the bicarbonate(s); and f) one or more metal salt(s) chosen from molybdenum, aluminium, zinc, calcium and rhodium salts; it being understood that: - the pH of at least one of the compositions comprising at least one of the ingredients a), b), d), e) and/or f) is alkaline, i.e. greater than 7, - the metal salt(s) f) is (are) applied in the final step of the dyeing process. The process according to the invention has the advantage of dyeing human keratin fibres with persistent and, surprisingly, chromatic coloration results, with a satisfactory coloration "uptake".