Process for dyeing keratin-containing fibres with cationic dyes

Details Process for dyeing keratin-containing fibres with cationic dyes Process for dyeing keratin-containing fibres with cationic dyes

1996-11-26

1998-03-31

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8568, 8573, 8639, 8655, 8657, 8659, 8692, A61K 713

Patent

active

057333432

ABSTRACT:
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.

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