Two step hair coloring compositions delivering deeper, long-lasting color
First Claim
1. A method of coloring hair comprising the following sequential steps:
- a) contacting the hair with an aqueous dye precursor mixture comprising;
i) an oxidative hair dye precursor,ii) a fatty component or components comprisinga) a sparingly soluble fatty amine having a water solubility less than 1 gm per liter selected from the group consisting of stearamidopropyl dimethylamine, dicetyl dimethylammonium chloride, PEG 3 cocamine, dihydroxyethyl soyamine dioleate and mixtures thereof,b) non-amine fatty ingredients selected from the group consisting of C12 to C22 fatty alcohol and their alkoxylates, nonionic surfactants, volatile or non-volatile silicones, hydrocarbon oils, ester oils and mixtures thereof,iii) a water miscible organic solvent,wherein the total weight of the sparingly soluble fatty amine plus the non-amine fatty ingredient in the precursor mixture, Σ
FC, and the weight of the organic solvents in the precursor mixture, Σ
OS, satisfies the inequality, Σ
FC<
0.037(Σ
OS)2−
3.35(Σ
OS)+63,wherein the dye precursor mixture does not contain an oxidizing agent,b) contacting the hair with a developer mixture capable of inducing oxidation of the oxidative dye precursor that is in contact with the hair to form colored species, andwherein the aqueous dye precursor mixture remains in contact with the hair for a time period of from about 0.5 to 60 minutes before the hair is contacted with the developer and wherein the oxidative hair dye precursor remains substantially inactive during this time period.
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Accused Products
Abstract
A two step method of coloring hair is described. The hair is first contacted for a period of time with a dye precursor mixture containing an oxidative dye, specific fatty components and one or more water miscible organic solvents. Color is then developed in a second step by contacting the hair with one or more oxidizing agents. Greater color intensity and longevity are achieved when the fatty component in the dye precursor mixture contains at least one fatty amine and the fatty ingredients and organic solvents satisfy the relationship, ΣFC<0.037(ΣOS)2−3.35(ΣOS)+63, where ΣFC and ΣOS are respectively the total weight of fatty ingredients and the total weight of water miscible organic solvents in the precursor mixture.
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Citations
15 Claims
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1. A method of coloring hair comprising the following sequential steps:
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a) contacting the hair with an aqueous dye precursor mixture comprising; i) an oxidative hair dye precursor, ii) a fatty component or components comprising a) a sparingly soluble fatty amine having a water solubility less than 1 gm per liter selected from the group consisting of stearamidopropyl dimethylamine, dicetyl dimethylammonium chloride, PEG 3 cocamine, dihydroxyethyl soyamine dioleate and mixtures thereof, b) non-amine fatty ingredients selected from the group consisting of C12 to C22 fatty alcohol and their alkoxylates, nonionic surfactants, volatile or non-volatile silicones, hydrocarbon oils, ester oils and mixtures thereof, iii) a water miscible organic solvent, wherein the total weight of the sparingly soluble fatty amine plus the non-amine fatty ingredient in the precursor mixture, Σ
FC, and the weight of the organic solvents in the precursor mixture, Σ
OS, satisfies the inequality, Σ
FC<
0.037(Σ
OS)2−
3.35(Σ
OS)+63,wherein the dye precursor mixture does not contain an oxidizing agent, b) contacting the hair with a developer mixture capable of inducing oxidation of the oxidative dye precursor that is in contact with the hair to form colored species, and wherein the aqueous dye precursor mixture remains in contact with the hair for a time period of from about 0.5 to 60 minutes before the hair is contacted with the developer and wherein the oxidative hair dye precursor remains substantially inactive during this time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A kit for providing more natural, deeper and long-lasting color to hair which comprises:
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a) an oxidative hair dye precursor mixture comprising; i) an oxidative hair dye precursor ii) a fatty component or components comprising; a) a sparingly soluble fatty amine having a water solubility less than 1 gm per liter selected from the group consisting of stearamidopropyl dimethylamine, dicetyl dimethylammonium chloride, PEG 3 cocamine, dihydroxyethyl soyamine dioleate and mixtures thereof, b) non-amine fatty ingredients selected from the group consisting of C12 to C22 fatty alcohol, C12 to C22 alkoxylates, nonionic surfactants, volatile or non-volatile silicones, hydrocarbon oils, ester oils and mixtures thereof, iii) a water miscible organic solvent, wherein the total weight of the sparingly soluble fatty amine plus the non-amine fatty ingredients in the precursor mixture, Σ
FC, and the weight of the organic solvents in the precursor mixture, Σ
OS, satisfies the inequality, Σ
FC<
0.037(Σ
OS)2−
3.35(Σ
OS)+63,wherein the dye precursor mixture does not contain an oxidizing agent, b) a developer mixture capable of inducing oxidation of the oxidative dye precursor that is in contact with the hair to form colored species, and wherein the aqueous dye precursor mixture remains in contact with the hair for a time period of from about 0.5 to 60 minutes before the hair is contacted with the developer and wherein the oxidative hair dye precursor remains substantially inactive during this time period. - View Dependent Claims (12, 13, 14, 15)
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Specification