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AssigneeL'oreal
InventorsFLORENCE LAURENT, ROLAND DE LA METTRIE
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The invention relates to an oxidation dyeing process for human keratin fibres, which comprises applying to the fibres a dye composition (A) containing, in a medium which is suitable for dyeing, at least one oxidation dye precursor and optionally one or more couplers; developing the colour in alkaline, neutral or acidic medium using an oxidizing composition (B) containing an oxidizing agent, at least one of the compositions (A) and (B) also containing an effective amount of at least one cationic amphiphilic polymer chosen from quaternized celluloses modified with groups containing at least one fatty chain, chosen from alkyl, arylalkyl and alkylaryl groups containing at least 8 carbon atoms, or mixtures thereof, and quaternized hydroxyethylcelluloses modified with groups containing at least one fatty chain, chosen from alkyl, arylalkyl and alkylaryl groups containing at least 8 carbon atoms, or mixtures thereof; the compositions (A) and (B) being mixed together immediately before use or applied one after the other to the keratin fibres.
An oxidation dye composition for keratin fibres wherein said composition comprises, in a medium which is suitable for dyeing, at least one oxidation dye precursor and at least one cationic amphiphilic polymer selected from:
An oxidizing composition for the oxidation dyeing of keratin fibres wherein said composition comprises at least one cationic amphiphilic polymer selected from:
A ready-to-use composition for dyeing keratin fibres comprising at least one oxidation dye precursor, at least one oxidizing agent, and at least one cationic amphiphilic polymer selected from:
A multi-compartment device or kit for dyeing keratin fibres wherein said device or kit comprises at least two compartments, one of which contains an oxidation dye composition (A) comprising in a medium which is suitable for dyeing, at least one oxidation dye precursor and another compartment contains an oxidizing composition (B) comprising at least one oxidizing agent, wherein at least one of the compositions (A) and (B) also contains an effective amount of at least one cationic amphiphilic polymer selected from:
A process for dyeing keratin fibres comprising:
Dependencies are inferred from the claim text.