Dye composition comprising at least one particular tricationic direct dye, dyeing process, use and multi-compartment devices

摘要: A dye composition for dyeing human keratin fibres, such as hair, comprising at least one direct tricationic of formula (I) below: Col-Z-Col  (I) wherein: Col, which may be identical or different, is a monocationic chosen from azo dyes, cyanomethine dyes and phenothiazine Z linear branched, saturated unsaturated C 1 -C 20 hydrocarbon-based groups nitrogen atom bearing cationic charge. Also processes fibres using the composition, to use multi-compartment devices.