COMPOSITION FOR DYEING KERATIN FIBRES COMPRISING A DIRECT DYE BEARING A DISULFIDE/THIOL FUNCTION, A NON-CELLULOSE-BASED THICKENING POLYMER, AN ALKALINE AGENT AND A REDUCING AGENT.

摘要

The invention relates to a process for dyeing and/or lightening keratin fibres such as the hair, using ii/i) at least one direct dye bearing a disulfide, thiol or protected-thiol function andi ii/i) at least one non-cellulose-based thickening organic polymer, iiii/i) at least one alkaline agent, iiv/i) at least one reducing agent and optionallyi v/i) at least one surfactant. The invention also relates to a composition comprising the ingredients ii/i) to iiv/i) and optionally iv/i), to the use of the combination of ii/i), iii/i), iiii/i), iiv/i) and optionally v) for the dyeing and/or lightening of keratin fibres, and to a multi-compartment kit comprising the ingredients ii/i) to iiv/i) and optionallyi v/i). The dyeing process and the composition according to the invention especially afford a long-lasting coloration on keratin fibres, which is strong, chromatic and/or homogeneous, with or without the use of an oxidizing agent.