HEMICYANIN STYRYL THIOL/DISULFIDE DYE, DYE COMPOSITION COMPRISING THIS DYE, PROCESS FOR LIGHTENING KERATIN MATERIALS USING THIS DYE

摘要

This invention relates to the dyeing of keratin material with thiol and disulfide styryl dyes , not when hemi . ; the present invention is that the bleaching effect when not using the hemi -styryl chromophore dye and a thiol or disulfide- containing dye keratin materials , especially keratin fibers , more particularly human keratin fibers such as the composition of the hair relates to a dyeing method . Also relates to their use for non- fading when a new hemi- styryl dye chromophore thiol , and keratin materials . ; This composition is resistant in particular , the visible discoloration effect on the keratin fibers of a dark color allows to obtain a coloring having .