Sun-care compositions

1. A sun-care composition having an SPF value of at least 15 comprising an admixture of:

(a) one or more sun-care actives;

(b) a copolymer (or a terpolymer) containing at least one vinyl pyrrolidone monomer and at least one vinyl caprolactam monomer; and

(c) a pharmaceutically/cosmetically/dermatologically acceptable vehicle.

2. The composition according to claim 1 , wherein the sun-care active is selected from the group consisting of UV-A sunscreens, UV-B sunscreens, physical sun blockers and combination thereof.

3. The composition according to claim 1 , wherein the sun-care active is selected from the group consisting of p-aminobenzoic acid, oxyethylene (25 mol) p-aminobenzoate, 2-ethylhexyl p-dimethylaminobenzoate, ethyl N-oxypropylene p-aminobenzoate, glycerol p-aminobenzoate, 4-isopropylbenzyl salicylate, 2-ethylhexyl 4-methoxycinnamate, methyl diisopropylcinnamate, isoamyl 4-methoxycinnamate, diethanolamine 4-methoxycinnamate, 3-(4′-trimethylammunium)-benzyliden-bornan-2-one methylsulfate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 2,4-dihydroxybenzophenone, 2,2′,4,4′-tetrahydroxybenzophenone, 2,2′-dihydroxy-4,4′ dimethoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-methoxy-4′-methoxybenzophenone, .beta.(2-oxoborn-3-ylidene)-tolyl-4-sulfonic acid and soluble salts thereof, 3-(4′-sulfo)benzyliden-bornan-2-one and soluble salts thereof, 3-(4′methylbenzylidene)-d,1-camphor, 3-benzylidene-d,1-camphor, benzene 1,4-di(3-methylidene-10-camphosulfonic) acid, urocanic acid, 2,4,6-tris[p-(2′-ethylhexyl-1′-oxycarbonyl)-anilino]-1,3,5-triazine, 2-[(p-(tertiobutylamido)anilino]-4,6-bis-[(p-(2′-ethylhexyl-1′-oxycarbony-1) anilino]-1,3,5-triazine, 2,4-bis {[4-(2-ethyl-hexyloxy)]-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3-,5-triazine, N-(2 et 4)-[(2-oxoborn-3-yliden)methyl]benzyl]-acrylamide, 1,4-bisbenzimidazolyl-phenylen-3,3′,5,5′-tetrasulfonic acid, the benzalmalonate-substituted polyorganosiloxanes, the benzotriazole-substituted polyorganosiloxanes (Drometrizole Trisiloxane), dispersed 2,2′-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol], solubilized 2,2′-methylene-bis-[6-(2H-benzotriazol-2-yl)-4-(methyl)phenol, cerium oxides, chromium oxides, cobalt oxides, iron oxides, red petrolatum, silicone-treated titanium dioxide, titanium dioxide, zinc oxide, and zirconium oxide and acid, salts, esters, derivatives and combinations thereof.

4. The composition according to claim 1 , having an SPF of at least 25.

5. The composition according to claim 1 , wherein said one or more sun-care actives are present in an amount of about 1 wt. % to about 50 wt. % of the total weight of the composition.

6. The composition according to claim 1 , wherein said copolymer (or terpolymer) is about 0.05 wt. % to about 10 wt. % of the total weight of the composition.

7. The composition according to claim 6 , wherein said copolymer (or terpolymer) is about 0.5 wt. % to about 2 wt. % of the total weight of the composition.

8. The composition according to claim 1 , wherein said pharmaceutically/cosmetically/dermatologically acceptable vehicle is selected from the group consisting of a cream, a lotion, an emulsion, an oil, a spray, a gel, an aerosol, an aqueous solution, a hydra-alcoholic solution, a suspension, an anhydrous solution, a powder, a serum, an ointment, a gel, a paste and combinations thereof.

9. The composition according to claim 1 , further comprising one or more additional components selected from the group consisting of skin-feel additives, moisturizing agents film former/waterproofing agents, pH adjuster/chelating agents, emulsifiers, preservatives, and mixtures thereof.

10. The sun-care composition according to claim 1 in the form of an oil-in-water emulsion, a water-in-oil emulsion, an oil-water-oil emulsion, a water-oil-water emulsion, a water-in-silicone emulsion, an oily solution, a lipid fusion, a hydro-alcoholic gel, an anhydrous gel, an aqueous gel, an alcoholic solutions or a hydro-alcoholic solution.

11. A method for enhancing the SPF-value of one or more sun-care actives in UV-photoprotecting sun-care compositions comprising admixing and intimately formulating a pharmaceutically/cosmetically/dermatologically acceptable carrier and a copolymer (or terpolymer) comprising at least one vinyl pyrrolidone monomer and at least one vinyl caprolactam monomer in an amount effective to enhance the SPF value of said one or more sun-care actives.