Hair dyeing method using a derivative of hematoxylin, of hematein, of brazilin or of brazilein, one metal salt, hydrogen peroxide and (bi)carbonate

摘要

Process for coloring keratin fibers comprises treating the fibers with: (i) one or more synthetic or natural tetracyclic compounds (A) and their mesomeric forms, stereoisomers, acid addition salts or base, or hydrates; (ii) one or more metal salts; (iii) hydrogen peroxide or one or more system for generating hydrogen peroxide; and (iv) one or more bicarbonates. Process for coloring keratin fibers comprises treating the fibers with: (i) one or more synthetic or natural tetracyclic compounds (A) of formula (I) and/or (II) and their mesomeric forms, stereoisomers, acid addition salts or base, or hydrates; (ii) one or more metal salts; (iii) hydrogen peroxide or one or more system for generating hydrogen peroxide; and (iv) one or more bicarbonates. X : HO-C= or O=C; R 1-R 6 : alkyl, alkoxy or acyloxy (all optionally substituted), H or OH; and bond with dotted line : conjugated C-C single or double bond. Independent claims are included for: (1) color cosmetic composition comprising: one or more ingredient (i)-(iv); and (2) a device having several compartments comprising 2-5 compartments containing 2-5 compositions in which the ingredients (i)-(iv) are distributed. [Image].