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US 5,700,452 AGranted
Compositions for imparting an artificial tan and protecting the skin from ultra-violet radiation
AssigneeThe Procter & Gamble Company
InventorsGeorge Endel Deckner, Francisco Antonio Pichardo, Noelle Carolyn Alban, Marsha Carolyn Sills
Life of this patent
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Abstract
The present invention relates to emulsion compositions which are useful for imparting both an artificial tan to human skin and for providing protection to the skin from the harmful effects of UV radiation. These compositions have good stability at acidic pH values, are highly substantive to the skin, and provide a natural looking tan.
Claims22
An oil-in-water emulsion composition useful for providing an artificial tan and UV protection comprising:
- (a) from about 0.1% to about 20% dihydroxyacetone;
- (b) from about 0.1% to about 30% of a sunscreen agent;
- (c) from about 0.1% to about 10.0% of a crosslinked cationic polymer of the formula:
- (A).sub.l (B).sub.m (C).sub.n wherein (A) is a dialkylaminoalkyl acrylate monomer or its quaternary ammonium or acid addition salt, (B) is a dialkylaminoalkyl methacrylate monomer or its quaternary ammonium or acid addition salt, (C) is acrylamide, l is an integer of 0 or greater, m is an integer of 1 or greater, and n is an integer of 0 or greater, wherein said polymer contains a crosslinking agent selected from the group consisting of methlenebisacrylamides, diallyldialkyl ammonium halides, polyalkenyl polyethers of polyhydric alcohols, allyl acrylates, vinyloxyalkylacrylates, and polyfunctional vinylidenes;
- (d) from about 0.1% to about 10% of a cationic emulsifier in the form of a quaternary ammonium salt having the formula:
- ##STR2## wherein R.sub.1 is a C.sub.12-22 alkyl group or R.sub.5 CO--(CH.sub.2).sub.n -- wherein R.sub.5 is a C.sub.12-22 alkyl group and n is an integer from about 2 to about 6, R.sub.2 is H or a C.sub.1-22 alkyl group, R.sub.3 and R.sub.4 are independently an H or a C.sub.1-3 alkyl group, and X is an anion selected from the group consisting of chloride, bromide iodide, acetate, phosphate, nitrate, sulfate, methyl sulfate, ethyl sulfate, tosylate, lactate citrate, glycolate, and mixtures thereof;
- (e) from about 30% to about 99.6% water,
- wherein said composition has a pH from about 2.5 to about 7.
5 more elements
Dependencies are inferred from the claim text.