Composition comprising a derivative of hematoxylin, of hematein, of brazilin or of brazilein, metal salt, hydrogen peroxide, and (bi)carbonate and hair dyeing method therewith

摘要

The disclosure relates to methods for dyeing keratinous fibers by treatment of said fibers with i) at least one entity chosen from hematoxylin, hematein, brazilin, brazilein, and their derivatives, 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. The disclosure also relates to multicompartment devices and compositions comprising the ingredients i), ii), iii) and iv).