Dye composition comprising a particular amphoteric surfactant and a sulfate or sulfonate surfactant

Abstract

The present invention relates to a composition for dyeing keratin fibers, comprising: a) one or more liquid fatty substances; b) one or more amphoteric surfactants of formula (I) below: R—C(O)—NH—CH—(CH)—N(B)(B') in which: —B represents the group —CH—CH—O—X′; —B′ represents the group —(CH)Y′, with z=1 or 2; —X′ represents the group —CH—C(O)OH, —CH—C(O)OZ′, —CH—CH—C(O)OH or —CH—CH—C(O)OZ′, or a hydrogen atom; —Y′ represents the group —C(O)OH, —C(O)OZ″, —CH—CH(OH)—SOH or the group —CH—CH(OH)—SO—Z″; —Z′ and Z″ represent, independently of each other, a cationic counterion derived from an alkali metal or alkaline-earth metal, such as sodium, an ammonium ion or an ion derived from an organic amine; —R, represents a C-Calkyl or alkenyl group derived from an acid R—C(O)OH, which is preferably present in copra oil or in hydrolyzed linseed oil, an alkyl group, especially a Cgroup and its iso form, or an unsaturated Cgroup and —n represents an integer ranging from 1 to 10 and preferably from 1 to 5, —or quaternized forms thereof; c) one or more sulfate or sulfonate surfactants; d) one or more oxidation dye precursors. The present invention also relates to a process using this composition and to a multicompartment device that is suitable for performing the said process.