Oxidation agent preparations

1. An oxidant preparation for oxidative color changing of keratinous fibers, comprising in a cosmetic carrier

(A) hydrogen peroxide and

(B) at least one acid selected from the group of hydrochloric acid, etidronic acid, benzoic acid, pyridine-2,6-dicarboxylic acid, and phthalic acid,

wherein the oxidant preparation has a pH value of from about 0.5 to about 1.8.

2. The oxidant preparation according to claim 1 , wherein the oxidant preparation comprises—relative to its total weight—

(A) hydrogen peroxide in an amount of from about 0.5 to about 12.5 wt. %.

3. The oxidant preparation according to claim 1 wherein the oxidant preparation comprises at least one acid from the group (B) in a total amount from about 0.5 to about 15.0 wt. %, relative to an oxidant preparation total weight.

4. The oxidant preparation according to claim 1 wherein the oxidant preparation consists of:

(A) the hydrogen peroxide,

(B) the acid, wherein the acid is selected from the group consisting of sulfuric acid, hydrochloric acid, etidronic acid, benzoic acid, phyridine-2,6-dicarboxylic acid, phthalic acid, and combinations thereof,

one or more fatty constituents having at least one saturated or unsaturated alkyl group with at least 8 carbon atoms, wherein the fatty constituent is non-ionic,

water,

sodium benzoate,

propanediol, and

steartrimonium chloride.

5. A method for oxidative color changing of human hair, comprising the following steps in the specified sequence:

A) mixing a first component (K1) with a second component (K2) to produce a mixture (M1),

B) applying the mixture (M1) on the hair,

C) allowing the mixture (M1) to take effect for a period of from about 30 seconds to about 45 minutes, and

D) rinsing the mixture (M1) from the hair,

wherein

the first component (K1) is an oxidant preparation, wherein the oxidant preparation comprises: a cosmetic carrier; (A) hydrogen peroxide; and (B) at least one acid selected from the group of sulfuric acid and hydrochloric acid; and wherein the oxidant preparation has a pH value of from about 0.5 to about 1.8, and

the second component (K2) is a dye preparation, which comprises at least one oxidation dye precursor, and/or at least one alkalizing agent.

6. The method according to claim 5 , wherein

the first component (K1) and the second component (K2) are mixed together, in a weight ratio of from about 3:1 to about 1:3.

7. The method according to claim 5 wherein the second component (K2) comprises at least one oxidation dye precursor selected from the group of p-toluenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, N,N-bis-(2-hydroxyethyl)-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, N-(4-amino-3-methylphenyl)-N-[3-(1H-imidazol-1-yl)propylamine, bis-(2-hydroxy-5-aminophenyl)methane, 4-aminophenol, 4-amino-3-methylphenol, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine and physiologically-tolerated salts thereof.

8. The method according to claim 5 wherein the component (K2) comprises from about 1.0 to about 8.0 wt. % ammonia (calculated as (NH 3 )) relative to a total weight of the component (K2).

9. The method according to claim 5 wherein

the component (K2) comprises water and that the pH value of the component (K2) has a value of from about 10.0 to about 10.8.

10. The method according to claim 5 wherein

the pH value of the mixture (M1) has a value of from about 9.0 to about 10.0.

11. A method for oxidative color changing of human hair, comprising the following steps in the specified sequence:

A) mixing a first component (Ka) with a second component (Kb) to produce a first mixture (Ma),

B) mixing the first mixture (Ma) with a third component (Kc) to produce a second mixture (Mb),

C) applying the second mixture (Mb) on the hair,

D) allowing the mixture (Mb) to take effect for a period of from about 30 seconds to about 45 minutes, and

E) rinsing the second mixture (Mb) from the hair,

wherein

the steps A) through E) are performed within a maximum of about 6 hours,

the first component (Ka) is an oxidizing preparation that comprises hydrogen peroxide,

the second component (Kb) is an oxidant diluent comprising at least one acid selected from the group of sulfuric acid and hydrochloric acid,

the first mixture (Ma) is an oxidant preparation comprising: a cosmetic carrier; (A) hydrogen peroxide; and (B) at least one acid selected from the group of sulfuric acid and hydrochloric acid; and wherein the oxidant preparation has a pH value of from about 0.5 to about 1.8, and

the third component (Kc) is a dye preparation, comprising at least one oxidation dye precursor, and/or at least one alkalizing agent.

12. The method according to claim 11 , wherein

A) the first component (Ka) and the second component (Kb) are mixed together in a quantity ratio of from about 3:1 to about 1:3, and

B) the first mixture (Ma) and the third component (Kc) are mixed together in a quantity ratio of from about 3:1 to about 1:3.

13. The oxidant preparation of claim 1 , wherein the oxidant preparation comprises etidronic acid.

14. The oxidant preparation of claim 1 , wherein the oxidant preparation comprises benzoic acid.

15. The oxidant preparation of claim 1 , wherein the oxidant preparation comprises phridine-2,6-dicarboxylic acid.

16. The oxidant preparation of claim 1 wherein the oxidation preparation has a pH value of from about 0.5 to about 1.6.

17. The oxidant preparation of claim 1 , wherein the oxidant preparation comprises phthalic acid.