| abstract |
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. |