Oxidizing composition for treating keratin fibres, comprising a phosphoric acid mineral salt, and processes therefor

Abstract

The present invention relates to an aqueous oxidizing composition for treating keratin fibers, comprising: at least one oxidizing agent; at least 40% by weight of at least one oil; at least one phosphoric acid mineral salt; the pH of the oxidizing composition being less than or equal to 5. The composition in accordance with the invention may be used for dyeing, bleaching or permanently reshaping keratin fibers. It produces ready-to-use compositions that give good dyeing, bleaching or permanent reshaping properties without degrading the keratin fibers and without impairing their cosmetic properties. Furthermore, the composition in accordance with the invention shows good stability over time, especially to storage at high temperatures, for example of about 45 C.

Claims

1. An aqueous oxidizing composition for treating keratin fibers, comprising: at least one oxidizing agent; at least 40% by weight of at least one oil; and at least one phosphoric acid mineral salt, present in an amount ranging from about 1% to about 10% by weight, relative to the total composition, wherein the pH of the oxidizing composition is less than or equal to 5, and wherein the at least one phosphoric acid mineral salt is chosen from the compounds of formula (A) and solvates thereof:
H.sub.2PO.sub.4M(A) wherein M is chosen from alkali metals, alkaline-earth metals, and ammonium.

2. The composition according to claim 1, wherein the at least one oil is chosen from C.sub.6-C.sub.16 lower alkanes; non-silicone oils of animal origin; glycerides of plant or synthetic origin; linear or branched hydrocarbons of mineral or synthetic origin comprising more than 16 carbon atoms; fluoro oils; liquid fatty alcohols; liquid fatty esters; non-salified liquid fatty acids; silicone oils; and mixtures thereof.

3. The composition according to claim 2, wherein the at least one oil is chosen from C.sub.6-C.sub.16 lower alkanes; linear or branched hydrocarbons of mineral or synthetic origin comprising more than 16 carbon atoms; liquid fatty alcohols; and mixtures thereof.

4. The composition according to claim 3, wherein the at least one oil is chosen from liquid petroleum jelly, isostearyl alcohol, octyldodecanol, and mixtures thereof.

5. The composition according to claim 1, wherein the content of the at least one oil is present in an amount ranging from about 40% to about 90% by weight, relative to the total weight of the composition.

6. The composition according to claim 5, wherein the at least one oil is present in an amount ranging from about 50% to about 70% by weight, relative to the total weight of the composition.

7. The composition according to claim 1, wherein the at least one phosphoric acid mineral salt is chosen from monosodium phosphate, monopotassium phosphate, monoammonium phosphate, combinations thereof, and hydrates thereof.

8. The composition according to claim 1, wherein the at least one oxidizing agent is chosen from hydrogen peroxide, persalts, urea peroxide, polythionates, alkali metal bromates, ferricyanides, peroxygenated salts, and mixtures thereof.

9. The composition according to claim 8, wherein the at least one oxidizing agent is chosen from alkali metal and alkaline earth metal persulfates, perborates, and percarbonates.

10. The composition according to claim 1, wherein the at least one oxidizing agent is present in an amount ranging from about 0.1% to about 50% by weight, relative to the total weight of the composition.

11. The composition according to claim 10, wherein the at least one oxidizing agent is present in an amount ranging from about 1% to about 20% by weight, relative to the total weight of the composition.

12. The composition according to claim 1, wherein the pH is adjusted using phosphoric acid.

13. The composition according to claim 1, further comprising at least one surfactant.

14. The composition according to claim 1, further comprising at least one hydrogen peroxide stabilizer chosen from alkali metal or alkaline-earth metal pyrophosphates, alkali metal or alkaline-earth metal stannates, phenacetin or oxyquinoline acid salts, and mixtures thereof.

15. The composition according to claim 1, wherein the at least one phosphoric acid mineral salt is chosen from monosodium phosphate, monopotassium phosphate, combinations thereof, and hydrates thereof.

16. A process for treating keratin fibers, comprising applying to the keratin fibers a composition according to claim 1.

17. A process for dyeing keratin fibers, comprising applying to the keratin fibers a composition according to claim 1.

18. A process for bleaching keratin fibers, comprising applying to the keratin fibers a composition according to claim 1.

19. A process for permanently reshaping keratin fibers, comprising applying to the keratin fibers a composition according to claim 1.

Description

EXAMPLE

(1) The following composition is prepared (amounts in g %):

(2) TABLE-US-00001 Cetylstearyl alcohol (30/70 C16/C18) 6 Oxyethylenated stearyl alcohol (20 OE) 6 Liquid petroleum jelly 50 Protected oxyethylenated rapeseed acid amide (4 OE) 1.6 Vitamin E: DL--Tocopherol 0.1 Glycerol 0.5 Tetrasodium pyrophosphate decahydrate 0.05 50% hydrogen peroxide solution (200 vol. aqueous 18 hydrogen peroxide solution) Etidronic acid, tetrasodium salt, as a 30% aqueous 0.2 solution Sodium salicylate 0.04 Monosodium phosphate dihydrate 2 Phosphoric acid qs pH = 2 deionized water qs 100

(3) After storage for two months at 45 C., the composition is stable, and in particular its pH has not changed.