Composition for Dyeing Human Keratin Fibres, Comprising a 1H-Pyrazolyl-Ethenyl-Indolium Derivative
申请人:Greaves Andrew
公开号:US20080000033A1
公开(公告)日:2008-01-03
The present invention relates to a dye composition comprising, in a suitable cosmetic medium, a 1H-pyrazolyl-ethenyl-indolium derivative of formula (I) below:
in which
R1 represents a linear or branched C1-C4 alkyl radical or a C1-C4 aralkyl radical, R2 represents a hydrogen atom, a C1-C4 alkyl radical, a C1-C4 alkoxy radical, a halogen atom or a nitro group; R3 and R4, which may be identical or different, represent a hydrogen atom, a C1-C4 alkyl radical, an aryl radical which may be substituted with one radical R chosen from a halogen atom, a hydroxyl radical, a C1-C4 alkyl radical, a C1-C4 alkoxy radical, a carboxyl radical and a trifluoromethyl radical, R5 represents a hydrogen atom, a C1-C4 alkyl radical or an aryl radical that may be substituted with one radical R, and X is a counterion.
Such a composition makes it possible to obtain direct colourations that are particularly resistant to external agents, in particular to shampoo.