USE OF AN AMINE AND/OR A QUATERNARY AMMONIUM COMPOUND FOR PROTECTING COLOUR OF ARTIFICIALLY COLOURED HAIR WITH RESPECT TO THE WASHING AND PROCESS THEREFORE
Use of an amine or quaternary ammonium compound according to general structure formula (A) R1___A___R2____B wherein R1 is a saturated or unsaturated, straight or branched alkyl group with 8 to 24 C atoms, R2 is a straight of branched alkyl group with 1 to 4 C atoms, A is O, and B is wherein R3 and R4 are independently H, 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, R5 and R6 are independently 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 R7 is an alkyl with 1 to 4 C atoms, hydroxyl alkyl with 1 to 4 C atoms, di hydroxyl alkyl with 2 to 4 C atoms or formula (F) ___R2___A____A____R1 wherein R1 A and R2 have the above meaning and X is an anion such as chloride, bromide, and methosulfate, for protecting colour of artificially coloured hair with respect to washing. A preferred compound is stearoxypropyldimethylamine. A composition comprising such an amine or quaternary ammonium compound may be applied to hair immediately after rinsing of a colouring composition. A kit for protecting the colour of artificially coloured hair with respect to washing comprises a separately packed composition comprising such an amine or quaternary ammonium compound.La présente invention concerne lutilisation de certains composés amine et ammonium quaternaire pour protéger du lavage la couleur de cheveux artificiellement colorés. Lutilisation dun composé selon de structure générale R1 A R2 B dans laquelle R1 est un groupe alkyle linéaire ou ramifié, saturé ou non saturé ayant de 8 à 24 atomes C, R2 est un groupe alkyle linéaire ou ramifié ayant de 1 à 4 atomes C, A est un groupe choisi parmi O, la formule (i) et la formule (ii) et B est choisi parmi la formule (iii) et la formule (iv), R3 et R4 sont identiques ou différents, H ou un groupe alkyle ayant de 1 à 4 atomes C, hydroxyl alkyle ayant de 1 à 4 atomes C et di-hydroxyl alkyle ayant de 2 à 4 atomes C, R5 et R6 sont
