Patent ID: 8163273

Claim:
A process for permanently reshaping keratin fibres comprising: (i) optionally applying a pre-treatment cosmetic composition to said keratin fibres; (ii) applying a reducing composition to the keratin fibres; (iii) oxidizing the keratin fibres; (iv) optionally applying a post-treatment cosmetic composition to said keratin fibres; wherein at least one of steps (i) and (iv) is performed and wherein said pre-treatment and/or post-treatment cosmetic compositions comprise, in a cosmetically acceptable vehicle, at least one aminosilicone microemulsion, wherein the number-average primary size of the particles in said at least one microemulsion ranges from 3 to 70 nm, and wherein the aminosilicone is chosen from compounds of formula I: in which x′ and y′ are integers such that the weight-average molecular weight of said aminosilicone ranges from about 5000 to about 500000; R 1 , R 2 and R 3 , which may be identical or different, are chosen from a hydroxyl radical, C 1 to C 4 alkyl radicals, C 1 to C 4 alkoxy radicals, and a phenyl radical; X is chosen from branched and unbranched C 1 -C 4 alkylene radicals; R 4 , which may be identical or different, is chosen from C 1 -C 4 alkyl and phenyl radicals; and p and p′, independently of each other, are chosen from integers ranging from 1 to 10, provided that at least one of R 1 , R 2 and R 3 is chosen from hydroxyl radicals and C 1 to C 4 alkoxy radicals; and wherein said aminosilicone comprises an amine number greater than 0.15 meq per gram.