Process for dyeing keratin-containing fibres

Details Process for dyeing keratin-containing fibres Process for dyeing keratin-containing fibres

A - Human Necessities

61

K

A61K 8/49 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 2142091

Keratin-containing fibres, in particular human hair, are dyed using dyes of formulae (1) to (6) indicated in claim 1. These dyes make it possible to dye by the trichromatic principle even in dark shades.

On teint les fibres kératiniques, et notamment les cheveux, à l'aide de colorants répondant aux formules (1) à (6) précisées dans la première revendication. Ces colorants permettent la teinture selon le principe trichromatique même lorsqu'on souhaite obtenir une teinte foncée.

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