Process to color and permanently restructure hair

1. 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.

2. The process as recited in claim 1 , wherein the developer substance is selected from 1,4-diaminobenzene, 1,4-diamino-2-methylbenzene, 1,4-diamino-2,6-dimethylbenzene, 1,4-diamino-2,5-dimethylbenzene, 1,4-diamino-2,3-dimethylbenzene, 1,4-diamino-2-chloro-benzene, 4-di[(2-hydroxyethyl)amino]aniline, 4-[(2-methoxyethyl)amino]aniline, 1,4-diamino-2-(2-hydroxyethyl)benzene, 1,3-bis-[N(2-hydroxyethyl)-N-(4-aminophenyl)amino-2-propanol, and 2,2′-[1,2-ethanediyl-bis(oxy-2,1-ethane-diyl)]bis-1,4-diaminobenzene.

3. The process as recited in claim 1 , wherein the coupler substance is selected from 1,3-diaminobenzene, 2-amino-4-[(2-hydroxyethyl)-amino]anisole, 2,4-diamino-1-fluoro-5-methylbenzene, 2,4-diamino-1-methoxy-5-methylbenzene, 2,4-diamino-1-ethoxy-5-methylbenzene, 2,4-diamino-1-(2-hydroxyethoxy)-5-methylbenzene, 2,4-di[(2-hydroxyethyl)amino]-1,5-dimethoxy-benzene, 2,4-diamino-1-(2-hydroxyethoxy)benzene, 3-di[(2-hydroxyethyl)amino]-aniline, 4-amino-1-ethoxy-2-di[(2-hydroxyethyl)amino]benzene, 3-[(2-hydroxyethyl)amino]aniline, 3-[(2-aminoethyl)amino]aniline, 1,3-di(2,4-diaminophenoxy)-propane, 2,4-dimethoxy-1,3-diaminobenzene, 2,6-bis(2-hydroxyethyl)amino-toluene, 3-dimethylaminophenol, 5-amino-2-methylphenol, 5-amino-4-fluoro-2-methylphenol, 5-amino-4-methoxy-2-methylphenol, 5-amino-4-ethoxy-2-methylphenol, 3-amino-2,4-dichlorophenol, 3-diethylaminophenol, 3-amino-2-chloro-6-methylphenol, 3-aminophenol, 3-[(amidomethyl)amino]phenol, 5-[(2-hydroxyethyl)amino]-2-methylphenol, 3-[(2-hydroxyethyl)amino]phenol, 5-amino-2-ethylphenol, 5-[(3-hydroxypropyl)amino]-2-methylphenol, 3-[(2,3-dihydroxypropyl)amino]-2-methylphenol, 3-[(2-hydroxyethyl)-amino]-2-methyl-phenol, 5-amino-4-chloro-2-methylphenol, methylenedioxyphenol, resorcinol, methylresorcinol, and 4-chlororesorcinol.

4. The process as recited in claim 1 , wherein the action period of the oxidative hair colorant is 10 to 45 minutes.

5. The process as recited in claim 1 , wherein the intermediate treatment agent contains betaine, citric acid, lactic acid, and/or glyoxylic acid.

6. The process as recited in claim 1 , wherein the intermediate treatment agent has a pH of from 2 to 3.

7. The process as recited in claim 1 , wherein the intermediate treatment agent has an action period of from 3 to 5 minutes.

8. The process as recited in claim 1 , wherein the hair keratin-reducing substance is present in the permanent restructuring agent in a quantity of from 2 to 15 percent by weight.

9. The process as recited in claim 1 , wherein the disulfide of the hair keratin-reducing compound is dithioglycolate.

10. The process as recited in claim 1 , wherein the disulfide of the hair keratin-reducing compound is contained in the permanent restructuring agent in a quantity of from 2 to 20 percent by weight.

11. The process as recited in claim 1 , wherein the ratio of the hair keratin-reducing substance to the disulfide of the hair keratin-reducing compound is 2:1 to 1:1.

12. The process as recited in claim 1 , wherein the hair is treated with the fixing agent, without rinsing the restructuring agent out of the hair prior to that.

13. The process as recited in claim 1 , wherein an acidic prefixing agent is applied to the hair after the action period of the restructuring agent and before the treatment with the fixing agent.