FIELD: cosmetic industry.
SUBSTANCE: group of inventions relates to the cosmetic industry, specifically to an agent for restorative decoloration of dyed keratin fibers, containing in an aqueous cosmetic carrier (a) a reducing agent which is sodium dithionite, and (b) one or more zwitterionic surfactants which, as structural units in each case, have at least one quaternary ammonium group and at least one SO3-grouping, to a kit for restorative decolouration of dyed keratin fibers, to a method for coloring and reducing decolouration of keratin fibers and to use of zwitterionic surfactant, which as structural units has at least one quaternary ammonium group and SO3-grouping, to improve the decolouration action of the reducing agent, which is sodium dithionite, in restorative decolouration of the dyed keratin fibers.
EFFECT: group of inventions provides persistent decolouration of colored hair for a long time.
16 cl, 1 ex
