Composition and method for levelling hair colour

摘要

The present invention relates to an aqueous composition and a method of levelling hair colour especially the hair lighter coloured or including lightened streaks or bleached streaks or bleached as a whole and after certain period of time contrast - difference in colour - between the re-growth and formerly lightened parts is clearly visible. Compositions comprising at least one fatty acid salt, preferably an in-situ formed ammonium or substituted ammonium salt, and one or more cationic or cationizable surfactants with the general structure
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ 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
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
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ -R 5 -A-R 4
wherein R 4 , A and R 5 have the above meaning and X is chloride, bromide, methosulfate,
or
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.