DYEING COMPOSITION CONTAINING A THIOL/DISULPHIDE NAPHTHYLIMIDE FLUORESCENT COLORANT, AND METHOD FOR LIGHTENING KERATIN MATERIALS USING SAID COLORANT

摘要

The invention relates to the colouring of keratin materials by means of thiol/disulphide naphthylimide fluorescent colorants, and to a method for colouring keratin materials, especially keratin fibres, particularly human keratin fibres such as hair, with a lightening effect, using said composition. The invention also relates to novel thiol/disulphide fluorescent colorants and the uses thereof for lightening keratin materials. Said composition produces a lightening effect which is especially tenacious and visible on dark keratin fibres.