Method and composition for permanently shaping hair

Details Method and composition for permanently shaping hair Method and composition for permanently shaping hair

A - Human Necessities

61

K

A61K 8/44 (2006.01) A61Q 5/04 (2006.01)

Patent

CA 2658737

A composition for permanent hair shaping comprising (i) 0.5% to 35 % by weight of a N-alkyl-2-mercaptoacetamide of formula (I), wherein R1 is a straight chain alkyl residue with 3 to 6 carbon atoms or a straight chain hydroxyalkyl with 3 to 6 carbon atoms, R2 and R3 are, independently from each other, hydrogen or straight chain alkyl residues with 1 to 3 carbon atoms, or the salt thereof, (ii) 0.1 % to 30 % by weight of at least one hair swelling and penetration enhancing substance and (iii) 5% to 95 % by weight of water; and the method of permanently shaping hair using said composition.

L'invention concerne une composition pour mise en forme durable de la chevelure, qui comprend: (i) entre 0,5 et 35% en poids d'un N-alkyle-2-mercaptoacétamide de formule (I), dans laquelle R1 désigne un reste alkyle à chaîne linéaire présentant entre 3 et 6 atomes de carbone ou un hydroxyalkyle à chaîne linéaire présentant entre 3 et 6 atomes de carbone, R2 et R3 désignent, indépendamment l'un de l'autre, hydrogène ou des restes alkyle à chaîne linéaire présentant entre 1 et 3 atomes de carbone ou un de leurs sels, (ii) entre 0,1 et 30% en poids d'au moins une susbtance de gonflement et de pénétration et (iii) entre 5 et 95% en poids d'eau. L'invention concerne également une méthode pour effectuer des mises en forme durables de la chevelure à l'aide de ladite composition.

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