PROCESSES FOR DYING KERATIN MATERIALS AND FOR DYING AND WHITING KERATIN FIBERS, USE, COMPOUND AND COMPOSITION

摘要

the invention relates to a process for dyeing and / or lightening keratin materials, preferably keratin fibers, preferably human keratin fibers, such as hair, with the use of at least one direct fluorescent dye that supports a function of disulfide, thiol or protected thiol and comprising at least one aliphatic chain of formula (i). the invention also relates to the use i) of at least one direct fluorescent dye that supports a disulfide, thiol or protected thiol function (i) combined with ii) heating iron and / or steam to smooth keratin fibers, for dyeing and lightening keratin materials, and innovative fluorescent direct dyes that support a disulfide, thiol or protected thiol function of formula (i), and also a cosmetic composition comprising the same.