Method, compositions, and kits for coloring hair
View Patent ↗A method for altering the color of hair comprising applying a bleach composition containing persulfate salts and at least one oxidizing agent to the desired strands of hair for a period of time sufficient to bleach the hair, removing the bleach composition from the hair but leaving at least some residual oxidizing agent on the bleached hair strands, then treating the hair with a colorant composition containing at least one dye operable to color hair in the presence of the residual oxidizing agent found on the bleached hair strands, said colorant composition being free of any oxidizing agents operable to react with the dye present therein to form color, whereby upon contact with the colorant composition, the hair strands treated with the bleach composition having residual oxidizing agent thereon will react with the dye present in the colorant composition to cause the bleached hair strands to become colored, while any remaining unbleached hair will not become colored by contact with the colorant composition and a kit and shampoo composition for use with the method.
1. A method for altering the color of hair comprising applying a bleach composition containing persulfate salts and at least one oxidizing agent to the desired strands of hair for a period of time sufficient to bleach the hair, removing the bleach composition from the hair but leaving at least some residual oxidizing agent on the bleached hair strands, then treating the hair with a colorant composition containing at least one dye operable to color hair in the presence of the residual oxidizing agent found on the bleached hair strands, said colorant composition being free of any oxidizing agents operable to react with the dye present therein to form color, whereby upon contact with the colorant composition, the hair strands treated with the bleach composition having residual oxidizing agent thereon will react with the dye present in the colorant composition to cause the bleached hair strands to become colored, while any remaining unbleached hair will not become colored by contact with the colorant composition.
2. The method of claim 1 wherein the entire head of hair is colored.
3. The method of claim 1 wherein only select strands of hair are colored.
4. The method of claim 1 wherein the bleach composition is prepared by combining about 10-95 parts of the oxidizing agent composition and about 10 to 95 parts of the persulfate composition.
5. The method of claim 4 wherein the oxidizing agent comprises hydrogen peroxide.
6. The method of claim 5 wherein the oxidizing agent composition is in the form of an emulsion or solution.
7. The method of claim 6 wherein the oxidizing agent composition comprises, by weight of the total oxidizing agent composition, about 1-30% oxidizing agent and about 50-99% water.
8. The method of claim 7 wherein the oxidizing agent composition further comprises about 0.01-30% by weight of the total oxidizing agent composition of an oily phase.
9. The method of claim 1 wherein the persulfate composition is in the particulate or paste form.
10. The method of claim 9 wherein the persulfate composition is in the particulate form.
11. The method of claim 9 wherein the persulfate composition comprises about 10-65% by weight of the total persulfate composition of one or more inorganic persulfates.
12. The method of claim 11 wherein the persulfate composition further comprises about 0.1-40% by weight of the total composition of one or more alkalizing agents.
13. The method of claim 11 wherein the persulfate composition comprises about 5-60% by weight of the total composition of one or more particulate fillers.
14. The method of claim 11 wherein the persulfate composition comprises about 0.1-70% by weight of the total persulfate composition of one or more lipophilic ingredients.
15. The method of claim 1 wherein the bleach composition is applied to the desired strands of hair with a comb on applicator affixed to a receptacle.
16. The method of claim 15 wherein the bleach composition is applied to the hair for about 10 to 65 minutes.
17. The method of claim 1 wherein the bleach composition is removed from the hair by rinsing well with water.
18. The method of claim 17 wherein the hair is rinsed for about 1 to second to five minutes to remove the bleach composition from the hair.
19. The method of claim 1 wherein the hair colorant composition is applied to the hair for about 2 minutes.
20. The method of claim 1 wherein the hair colorant composition comprises, by weight of the total hair colorant composition, about 0.1-99% water and at least one dye.
21. The method of claim 20 wherein the hair colorant composition comprises at least one primary intermediate and, optionally, at least one coupler for the formation of oxidation dyes.
22. The method of claim 20 wherein the hair colorant composition comprises, by weight of the total hair colorant composition, about 0.0001-6% of at least one primary intermediate, and, optionally, about 0.0001-10% of at least one coupler for the formation of oxdiation dyes.
23. The method of claim 20 wherein the hair colorant composition is in the form of a shampoo.
24. The method of claim 23 wherein the hair colorant composition further comprises one or more surfactants.
25. The method of claim 23 wherein the hair colorant composition comprises one or more alkalizing agents present at about 1-5% by weight of the total hair colorant composition.
26. The method of claim 23 wherein the hair colorant composition comprises one or more fatty acids present at about 0.001-15% by weight of the total hair colorant composition.
27. The method of claim 1 wherein the hair colorant composition is removed from the hair by rinsing well with water.