Use of a cationic hydrotrope i.e. phenyl or pyridinium derivative in a coloring process of keratinous fibers i.e. in hair coloring

摘要

Use of a cationic hydrotrope i.e. phenyl or pyridinium derivative (I) in a coloring process of keratinous fibers. The electroneutrality of the compound is assured by an anion or a mixture of anions. Use of a cationic hydrotrope i.e. phenyl or pyridinium derivative of formula (I) in a coloring process of keratinous fibers. The electroneutrality of the compound is assured by an anion or a mixture of anions. X : CH or N +>R 6; R 61-10C, preferably 1-6C alkyl; R 1H, 1-10C, preferably 1-6C alkyl (when X is N +>R 6) or -(CH 2) nN +>R 3R 4R 5 (when X is CH); R 3-R 51-10C alkyl; n : 0-12; R 21-4C alkyl; and p : 0-1. Independent claims are included for: (1) a tinctorial composition for the coloring of human keratinous fibers, comprising (I) and a direct dye and/or an oxidation dye, in a medium; and (2) a process coloring of keratinous fibers, comprising applying the tinctorial composition optionally in combination with a simultaneous of successive application of an oxidizing composition comprising an oxidant on the keratinous fibers, leaving for some time to obtain a desired effect, optionally rinsing the fibers and shampooing and rinsing the fibers, followed by drying or leaving to dry. [Image].