DYE COMPOSITION COMPRISING A PARTICULAR AMPHOTERIC SURFACTANT AND AN OXYETHYLENATED AMIDE SURFACTANT OR AN OXYETHYLATENATED FATTY ALCOHOL SURFACTANT COMPRISING LESS THAN 10 OE UNITS AND MIXTURE THEREOF DYE COMPOSITION COMPRISING A PARTICULAR AMPHOTERIC SURFACTANT AND AN OXYETHYLENATED AMIDE SURFACTANT
The present invention relates to a composition for dyeing keratin fibres, comprising: a) one or more liquid fatty substances b) one or more amphoteric surfactants of formula (I) below: Ra-C(O)-NH-CH2-(CH2)n-N(B)(B) in which: B represents the group -CH2-CH2-O-X B represents the group -(CH2)zY, with z = 1 or 2 X represents the group -CH2-C(O)OH, -CH2-C(O)OZ, -CH2-CH2-C(O)OH or -CH2-CH2-C(O)OZ, or a hydrogen atom Y represents the group –C(O)OH, -C(O)OZ, -CH2-CH(OH)-SO3H or the group -CH2-CH(OH)-SO3-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 Ra represents a C10-C30 alkyl or alkenyl group derived from an acid Ra-C(O)OH, which is preferably present in copra oil or in hydrolysed linseed oil, an alkyl group, especially a C17 group and its iso form, or an unsaturated C17 group and n represents an integer ranging from 1 to 10 and preferably from 1 to 5, or quaternized forms thereof c) one or more nonionic surfactants chosen fromoxyethylenated amide, oxyethylenated (OE) fatty alcohol comprising less than 10 OE units and mixture thereof d) one or more oxidation dye precursors and e) one or more chemical oxidizing agents. The present invention also relates to a process using this composition and to a multi-compartment device that is suitable for performing the said process.La présente invention concerne une composition pour colorer des fibres de kératine, comprenant : a) une ou plusieurs substances grasses liquides b) un ou plusieurs tensioactifs amphotères de formule (I) ci-dessous : Ra-C(O)-NH-CH2-(CH2)n-N(B)(B), dans laquelle : B représente le groupe -CH2-CH2-O-X B représente le groupe -(CH2)zY, avec z = 1 ou 2 X représente le groupe -CH2-C(O)OH, -CH2-C(O)OZ, -CH2-CH2-C(O)OH ou -CH2-CH2-C(O)OZ, ou un atome dhydrogène Y représente le groupe –C(O)OH, -C(O)OZ, -CH2-CH(OH)-SO3H ou le groupe -CH2-CH(OH)-SO3-Z Z et Z représent
