Efficient two-step method of coloring and lightening hair with less damage
First Claim
1. A method of coloring and lightening hair to provide more vibrant, natural and long-lasting color with reduced damage comprising carrying out the following sequential steps:
- (e) contacting said hair with a substantially inactive mixture of oxidative hair dye precursors wherein the rate of oxidation of hair dye precursors/rate of diffusion of hair dye precursors is less than about 1;
(f) allowing said mixture to remain in said hair for a period of about 5 minutes to about 60 minutes;
(g) contacting said hair with an aqueous developer composition comprising a mixture of a persulfate salt, a peroxide, and a basifying compound, wherein the weight ratio of persulfate salt to peroxide is in the range from about 1 to about 4;
(h) allowing the composition in step (c) to remain on said hair for a period of about 30 seconds to about 60 minutes.
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Abstract
The present invention relates to a 2-step methods, and compositions for providing more vibrant, natural and long-lasting color to hair and at the same time reducing hair fiber damage associated with alternative current methods. In the first step the hair is contacted for a period of time with a dye precursor mixture containing specific oxidative hair dye precursors under conditions where these dyes are substantially inactive. Color is then developed in a second step by contacting the hair with a mixture of a peroxide compound and a persulfate salt. Surprisingly the 2-step method leads to considerable “lift” or lightening without negatively impacting the coloring ability of the oxidative dye. The invention also relates to kits providing the means to accomplish these steps.
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Citations
17 Claims
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1. A method of coloring and lightening hair to provide more vibrant, natural and long-lasting color with reduced damage comprising carrying out the following sequential steps:
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(e) contacting said hair with a substantially inactive mixture of oxidative hair dye precursors wherein the rate of oxidation of hair dye precursors/rate of diffusion of hair dye precursors is less than about 1;
(f) allowing said mixture to remain in said hair for a period of about 5 minutes to about 60 minutes;
(g) contacting said hair with an aqueous developer composition comprising a mixture of a persulfate salt, a peroxide, and a basifying compound, wherein the weight ratio of persulfate salt to peroxide is in the range from about 1 to about 4;
(h) allowing the composition in step (c) to remain on said hair for a period of about 30 seconds to about 60 minutes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17)
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13. A kit for providing more vibrant, natural and long-lasting color to hair which comprises:
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(e) a hair colorant composition comprising oxidative hair dye precursors in a container, (f) a composition comprising a peroxide in a container, (g) a composition comprising a persulfate salt in a container, (h) an alkaline composition used to activate the peroxide/persulfate (i) written instructions that direct that the hair colorant composition is first applied to the hair as a substantially inactive mixture for about 5 minutes to about 60 minutes before a hair color developer composition, created by mixing the peroxide composition, the persulfate salt composition and the alkaline composition, is applied to the hair, wherein the oxidative hair dye precursors of the hair colorant composition satisfies the condition that the rate of oxidation of hair dye precursors/rate of diffusion of hair dye precursors <
1 when the hair colorant composition is applied to the hair before the hair is contacted with the hair color developer composition. - View Dependent Claims (14, 15)
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16. The kit according to claim 23 further comprising conditioning agents, color sealants, damage control agents, hair benefit agents, perfumes, moisturizers and mixtures thereof, either packaged separately or as part of the oxidative hair dye precursor, peroxide or persulfate compositions.
Specification