| abstract |
The subject of the invention is a dye composition for dyeing human keratin fibers and more particularly the hair, comprising a direct polycationic dye of formula (I), Col-Z-Pass in which Col represents a monocation dye chosen from the group formed by azo, methine, azomethine and phenothiazine dyes, Z is a linear or branched, saturated or unsaturated C 1 -C 20 hydrocarbon group comprising at least one nitrogen atom and carrying at least two cationic charges, as well as the processes for dyeing human keratin fibers using it, the use of dyes of formula (I) as direct dyes, as well as devices with several compartments. |