Patent ID: 8308824

Claim:
Aqueous composition for levelling hair colour comprising (1) at least one fatty acid salt, (2) an in-situ formed ammonium or substituted ammonium salt, and (3) one or both of (a) one or more cationic and/or cationizable surfactants with the general structure R 4 -A-R 5 —B wherein R 4 is a saturated or unsaturated, straight or branched alkyl group with 8 to 24 C atoms, R 5 is a straight or branched alkyl group with 1 to 4 C atoms, A is a group selected from O, and B is selected from wherein R 6 and R 7 are the same or different is H or an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms and di hydroxyl alkyl with 2 to 4 C atoms, R 8 , and R 9 are the same or different, an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms and di hydroxyl alkyl with 2 to 4 C atoms, R 10 is an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms or di hydroxyl alkyl with 2 to 4 C atoms and —R 5 -A-R 4 wherein R 4 , A and R 5 have the above meaning and X is chloride, bromide, methosulfate, and (b) a quaternary ammonium surfactant according to the general formula where R 11 is a saturated or unsaturated, branched or non-branched alkyl chain with 8-24 C atoms and R 12 is unsaturated or saturated, branched or non-branched alkyl chain with 1 -24 C atoms and R 13 and R 14 are lower alkyl chain with 1 to 4 carbon atoms which may be substituted with one or more hydroxyl groups, and X is anion such as chloride, bromide, methosulfate.