Patent ID: 7771734

Claim:
A process for coloring and permanently restructuring hair, wherein (a) an oxidative hair colorant is applied to the hair based on at least one developer substance and at least one coupler substance, (b) the oxidative hair colorant is left on for 5 to 60 minutes, (c) the oxidative hair colorant is rinsed out of the hair, (d) an acidic intermediate treatment agent with a pH of from 2 to 6 is applied to the hair, (e) after an action period of from 1 to 10 minutes, the intermediate treatment agent is rinsed out, if necessary, and the hair is then rolled up onto curlers, (f) a keratin-reducing permanent restructuring agent in the form of a premixed aqueous solution is applied to the hair, (g) after an action period of from 1 to 30 minutes, the keratin-reducing agent is rinsed out, if necessary, (h) the hair is fixed with an oxidative material, and (i) after an action period of from 3 to 15 minutes, the hair is rinsed with water, if necessary, and then treated with an acidic rinse, wherein the permanent restructuring agent contains: a disulfide of a hair keratin-reducing compound and a hair keratin-reducing substance selected from the group consisting of mercaptoacetic acid, salts of mercaptoacetic acid, cysteine, salts of cysteine, thiolactic acid and salts of thiolactic acid; and wherein the keratin-reducing permanent restructuring agent is applied to the hair on the same day that the oxidative coloring agent is applied to the hair.