Patent ID: 7070770

Claim:
A reducing composition for permanent deformation of hair comprising at least one reducing agent chosen from N-substituted formamidinesulphinic acid derivatives of formula (I), the inorganic salts thereof, and the organic salts thereof: in which: R1, R2, and R3, which are identical or different, are each chosen from hydrogen; amino groups; C 1 to C 8 aminoiminoalkyl groups; imino groups; C 1 to C 8 aminoalkyl groups; guanidino groups; C 1 to C 8 linear alkyl groups; C 1 to C 8 branched alkyl groups; C 2 to C 8 linear alkenyl groups; C 2 to C 8 branched alkenyl groups; C 7 to C 20 aralkyl groups; and phenyl groups optionally substituted by at least one group chosen from halogens, C 1 to C 4 alkyl groups, C 1 to C 4 alkoxy groups, and hydroxyl groups; and wherein said R1, R2, and R3 are optionally substituted; with the proviso that when R1 is hydrogen or C 1 to C 4 alkyl, then R2 and R3 are not simultaneously hydrogen, or hydrogen and C 1 to C 4 alkyl, the composition further comprising at least one additive chosen from reducing agents other than said at least one reducing agent; surface-active agents chosen from nonionic surface-active agents, anionic surface-active agents, cationic surface-active agents, and amphoteric surface-active agents; treating agents chosen from cationic treating agents, anionic treating agents, nonionic treating agents, and amphoteric treating agents; fatty alcohols; lanolin derivatives; active ingredients; agents for combating hair loss; antidandruff agents; thickeners; suspending agents; sequestering agents; opacifying agents; colorants; sunscreen agents; fragrances; and preservatives.