composto, processo de preparação de um composto, composição para coloração de um material, processo de tingimento de fibras, processo para remover cor de cabelo tingido e processo para tratamento de cabelo

摘要

A method of removing colour from dyed hair, the method comprising applying to the hair a colour removal composition comprising a sulfur-containing nucleophile or a precursor thereof. The sulfur-containing nucleophile can be a salt of sulphoxylic acid, thiocyanate, thioglycolic acid, thiocarbamate, carbamoyl sulphinic acid and mixtures and/or salts thereof.