SUNSCREEN COMPOSITION WITH LOW STICKINESS

Abstract

The present invention relates to a topical preparation comprising a UV filter combination of certain microfine zinc oxide, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: Bis-Ethylhexyloxyphenol methoxyphenyl Triazine), 2-phenylbenzimidazole-5-sulfonic acid and/or one or more salts thereof and 2,4,6-tris[anilino(p-carbo-2′-ethyl-1′-hexyloxy)]-1,3,5-triazine (INCI: Ethylhexyl Triazone).

Claims

1. A topical composition, wherein the composition comprises a UV filter combination of a.) a microfine zinc oxide, wherein the microfine zinc oxide has a mean particle size Dn50 as determined by Laser diffraction selected in the range from 30 to 200 nm and a surface coating selected from the group consisting of triethoxycaprylylsilane, octyltrimethoxysilane and dimethicone, b.) 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: Bis-Ethylhexyloxyphenol methoxyphenyl Triazine), c.) 2-phenylbenzimidazole-5-sulfonic acid and/or one or more salts thereof and d.) 2,4,6-tris[anilino(p-carbo-2′-ethyl-1′-hexyloxy)]-1,3,5-triazine (INCI: Ethylhexyl Triazone).

2. The topical composition according to claim 1, wherein the microfine zinc oxide has a mean particle size selected in the range from 50 to 200 nm, preferably from 75 to 150 nm, most preferably in the range from 90 to 130 nm as determined by Laser diffraction.

3. The topical composition according to claim 1, wherein the microfine zinc oxide is surface coated with triethoxycaprylylsilane.

4. The topical composition according to claim 1, wherein the amount of the microfine zinc oxide is selected in the range from 0.1 wt.-% to 20 wt.-%, preferably in the range from 0.5 wt.-% to 10 wt.-%, most preferably in the range of 5 wt.-% to 10 wt.-%, based on the total weight of the composition.

5. The topical composition according to claim 1, wherein the composition contains no 3-(4-methylbenzylidene)camphor, 2-hydroxy-4-methoxybenzophenone (INCI: Oxybenzone), and ethylhexyl 2-cyano-3,3-diphenylacrylate (INCI: Octocrylene).

6. The topical composition according to claim 1, wherein the composition is an O/W emulsion.

7. The topical composition according to claim 1, wherein the composition is a W/O emulsion.

8. The topical composition according to claim 1, wherein the composition comprises one or more of Ceteareth-6 and Ceteareth-25 as emulsifier.

9. The topical composition according to claim 1, wherein the composition comprises one or more of dibutyl adipate, dicaprylyl carbonate and C12-C15 alkylbenzoate.

10. The topical composition according to claim 1, wherein the composition comprises one or more of ethanol, p-hydroxyacetophenone, phenoxyethanol and ethylhexylglycerin.

11. The topical composition according to claim 1, wherein the composition comprises one or more of xanthan gum, crosslinked acrylate/C10-C30 alkyl acrylate polymer, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer & Squalane & Polysorbate 60 and vinylpyrrolidone/hexadecene copolymer.

12. The topical composition according to claim 1, wherein the composition comprises one or more of cetyl alcohol, cetearyl alcohol, stearyl alcohol and glyceryl stearate.

13. The composition according to claim 1, wherein the composition has an SPF of at least 20.

14. Use of microfine zinc oxide, wherein the microfine zinc oxide has a mean particle size Dn50 as determined by Laser diffraction selected in the range from 30 to 200 nm and a surface coating selected from the group consisting of triethoxycaprylylsilane, octyltrimethoxysilane and dimethicone to reduce the stickiness of a topical composition comprising a 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: Bis-Ethylhexyloxyphenol methoxyphenyl Triazine), 2-phenylbenzimidazole-5-sulfonic acid and/or one or more salts thereof and 2,4,6-tris[anilino(p-carbo-2′-ethyl-1′-hexyloxy)]-1,3,5-triazine (INCI: Ethylhexyl Triazone).

15. Method for reducing the stickiness and/or the sand adherence on skin of a topical composition comprising 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: Bis-Ethylhexyloxyphenol methoxyphenyl Triazine), 2-phenylbenzimidazole-5-sulfonic acid and/or one or more salts thereof and at least one of 2,4,6-tris[anilino(p-carbo-2′-ethyl-1′-hexyloxy)]-1,3,5-triazine (INCI: Ethylhexyl Triazone), said method encompassing the step of incorporating microfine zinc oxide wherein the microfine zinc oxide has a mean particle size Dn50 as determined by Laser diffraction selected in the range from 30 to 200 nm and a surface coating selected from the group consisting of triethoxycaprylylsilane, octyltrimethoxysilane and dimethicone into said topical composition before applying said composition to skin.

Description

EXAMPLES

[0106] The formulations as outlined in table 1 have been prepared according to standard methods in the art. Then the sand repellence has been tested according to the method as outlined below: [0107] Apply 2 mg/cm.sup.2 of cream on PMMA plate and distribute homogenously [0108] Let it dry for 15 minutes @ 40° C. [0109] Weigh the PMMA plate [0110] Put sand (Kultpfötchen 5 kg-Terrarium Sand Natur beige | Körnung 0.4-0.8 mm) into a petri dish, place the plate with cream film side on sand put a weight (500 g) on plate, wait 5 minutes [0111] Take the plate out and turn the PMMA plate 180° without shaking [0112] Weigh the PMMA plate [0113] Calculate the amount of sand sticking on the plate [0114] Repeat test with 4 plates per sample

[0115] The results are outlined in Table 1

TABLE-US-00001 TABLE 1 #8216 #8214 #827 Trade name INCI w % Cetiol CC DICAPRYLYL CARBONATE 10.00 10.00 10.00 Finsolv TN C12-15 ALKYL BENZOATE 10.00 10.00 10.00 Dispersun DSP-OL300 POLYHYDROXYSTEARIC 0.50 0.50 0.50 ACID Uvinul T 150 ETHYLHEXYL TRIAZONE 2.00 2.00 2.00 PARSOL ® Shield BIS- 2.00 2.00 2.00 ETHYLHEXYLOXYPHENOL METHOXYPHENYL TRIAZINE ZnO-C-DS4 Zinc Oxide; Dimethicone 10.00 Parsol ® ZX ZINC OXIDE; 10.00 TRIETHOXYCAPRYLYLSILANE Cutina HR Powder HYDROGENATED CASTOR 0.50 0.50 0.50 OIL Paracera ® M MICROCRISTALLINA CERA 1.00 1.00 1.00 Dehymuls LE PEG-30 3.50 3.50 3.50 DIPOLYHYDROXYSTEARATE WATER DEM. AQUA Ad 100 Ad 100 Ad 100 Magnesium Sulfate Heptahydrate Magnesium Sulfate 0.50 0.50 0.50 PARSOL ® HS PHENYLBENZIMIDAZOLE 2.00 2.00 2.00 SULFONIC ACID Natnumhydroxid 30% Lösung AQUA; SODIUM HYDROXIDE 0.90 0.90 0.90 Remaining amount of sand on the plate [mg] 827 760 622 Standard deviation [mg] 85 84 35 % reduction (less sand) vs. 8216 −8% −25% % reduction (less sand) vs. 8214 −18%

[0116] As can be retrieved from table 1, the combination according to the present invention results in a reduction of sand sticking to the plates compared to the references.