L'oreal

Loreal Sa

Alan Lagrange

Alain R Genet

The invention relates to dyeing compositions containing phenyl-azo-benzene compounds comprising at least one cationic group Z, Z being chosen from quaternized aliphatic chains, aliphatic chains comprising at least one quaternized saturated ring and aliphatic chains comprising at least one quaternized unsaturated ring, to the use of such compositions as direct dyes in dyeing applications for keratin substances, in particular human keratin fibers and especially the hair, and to the direct dyeing processes employing these compositions.

Use of cationic phenyl-azo-benzene compounds for dyeing keratin fibers, dye compositions and dyeing processes

The invention relates to novel monobenzenic dyes including at least one cationic group Z, Z chosen from quaternized aliphatic chains, aliphatic chains including at least one quaternized saturated ring and aliphatic chains including at least one quaternized unsaturated ring, to their use as oxidation-dye precursors for the oxidation-dyeing of keratin fibers, to dye compositions containing them and to oxidation-dyeing processes using them.

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Coupvray, France

Alan Lagrange