Cosmetic compositions comprising a polymer and a colorant
View Patent ↗A cosmetic composition suitable for use on mammalian skin, hair, and nails. These compositions contain a polymer and a colorant. The polymer of the composition mitigates staining caused by the colorant, and the polymer and colorant are opposite in charge. The present invention is also directed to methods of mitigating skin staining through using the cosmetic compositions.
1. A cosmetic composition for mitigating skin staining comprising a cationic polymer comprising cationic protonated amine or quaternary ammonium functionalities comprising dialkylaminoalkyl acrylates, dialkylaminoalkyl methacrylates, monoalkylaminoalkyl acrylates, monoalkylamino alkyl methacrylates, trialkyl methacryloxyalkyl ammonium salts, trialkyl acryloxyalkyl ammonium salts, diallyl quaternary ammonium salts, pyridinium moeities, imidazolium moeities, quaternized pyrrolidone moeities, and mixture thereof; an encapsulated anionic colorant selected from the group consisting of FD&C Yellow 5, D&C Yellow 10, D&C Red 33, D&C Green 5, D&C Yellow 8, D&C Red 28, and mixtures thereof; and an aqueous carrier; wherein said cationic polymer forms a coacervate with said encapsulated anionic colorant.
2. The composition of Claim 1 wherein said aqueous carrier is water.
3. The composition of claim 1 comprising from about 0.02 to about 15 weight percent of said cationic polymer.
4. The composition of claim 1 comprising from about 0.1 to about 5 weight percent of said cationic polymer.
5. The composition of claim 1 comprising from about 0.2 to about 2 weight percent of said cationic polymer.
6. The composition of claim 1 wherein said composition mimics the spectral curve of skin.
7. The composition of claim 1 having a spectrophotometric curve, wherein a first derivative of the spectrophotometric curve comprises: a) a maximum peak in the region of from about 430 nm to about 520 nm occurs at a wavelength not greater than about 480 nm; b) a maximum peak in the region of from about 420 nm to about 650 nm occurs at a wavelength of from about 570 nm to about 630 nm; and c) a minimum valley in the region of from about 520 nm to about 580 nm has Δ% R/Δλ of less than or equal to about 0.03, wherein R is reflectance and λ is wavelength, and wherein the cosmetic composition comprises a mixture of at least two colorants, wherein a first derivative of the spectrophotometric curve of each of the individual colorants does not exhibit (a), (b) and (c).
8. A method of mitigating skin staining comprising the step of applying to the skin a personal care composition comprising a cationic polymer comprising a cationic protonated amine or quaternary ammonium functionalities comprising dialkylaminoalkyl acrylates, dialkylaminoalkyl methacrylates, monoalkylaminoalkyl acrylates, monoalkylamino alkyl methacrylates, trialkyl methacryloxyalkyl ammonium salts, trialkyl acryloxyalkyl ammonium salts, diallyl quaternary ammonium salts, pyridinium moeities, imidazolium moeities. quaternized pyrrolidone moeities, and mixture thereof, wherein said composition comprises an encapsulated colorant and wherein said encapsulated colorant and said polymer are opposite in charge, and wherein said encapsulated colorant is selected from the group consisting of FD&C Yellow 5, D&C Yellow 10, D&C Red 33, D&C Green 5, D&C Yellow 8, D&C Red 28, and mixtures thereof, wherein said cosmetic composition wipes off of the keratinaceous surface and wherein said cationic polymer forms a coacervate with said encapsulated anionic colorant.
9. The composition of claim 1 , wherein the cationic polymer is selected from the group consisting of 1-vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium salts, dimethyldiallylammonium halide homopolymers, copolymers of acrylamide and dimethyldiallylammonium chloride, quaternized ammonium siloxane salts, and mixtures thereof.
10. The composition of claim 9 , wherein the cationic polymer is selected from the group consisting of polyquaternium-6, polyquaternium-7, polyquaternium-16, quaternium-80, and mixtures thereof.