Sunscreen compositions and methods of their use

Patent metadata

Field	Value
Publication number	US-9744111-B2
Application number	US-201514796395-A
Country	US
Kind code	B2
Filing date	Jul 10, 2015
Priority date	Jul 11, 2014
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

Described herein are compositions useful for protecting the skin from the sun. The compositions comprise cosmetic ingredients such as zinc oxide, titanium dioxide, butyloctyl salicylate, and a dermatologically acceptable vehicle. The compositions may further comprise additional ingredients such as cyclopentasiloxane, neopentyl glycol diheptanoate, butylene glycol, caprylyl methicone, PEG-9 polydimethylsiloxyethyl dimethicone, glycerin, polyglyceryl-6 polyricinoleate, lauric acid, aluminum hydroxide, potassium sorbate, and citric acid.

First claim

The invention claimed is:

1. A sunscreen composition having a sun protection factor (SPF) of at least 20, wherein the composition comprises:
a combination of zinc oxide, titanium dioxide, and butyloctyl salicylate sufficient to impart the SPF of at least 20 to the composition, wherein the composition does not include any additional physical or chemical UV absorption agents;
cyclopentasiloxane;
neopentyl glycol diheptanoate;
butylene glycol;
caprylyl methicone;
PEG-9 polydimethylsiloxyethyl dimethicone;
glycerin;
polyglyceryl-6 polyricinoleate;
lauric acid;
aluminum hydroxide;
potassium sorbate; and
citric acid.

2. The composition of claim 1 , wherein the composition comprises 2% to 7% by weight of zinc oxide, 2% to 7% by weight of titanium dioxide, and 2% to 7% by weight of butyloctyl salicylate.

3. The composition of claim 2 , wherein the composition comprises 5% by weight of zinc oxide, 5% by weight of titanium dioxide, 5% by weight of butyloctyl salicylate, and 46% by weight of water.

4. The composition of claim 1 comprising:
1 to 10% by weight of zinc oxide;
1 to 10% by weight of titanium dioxide;
1 to 10% by weight of butyloctyl salicylate;
5 to 15% by weight of cyclopentasiloxane;
1 to 10% by weight of neopentyl glycol diheptanoate;
1 to 10% by weight of butylene glycol;
1 to 10% by weight of caprylyl methicone;
1 to 5% by weight of PEG-9 polydimethylsiloxyethyl dimethicone;
0.5 to 5% by weight of glycerin;
0.1 to 3% by weight of polyglyceryl-6 polyricinoleate;
0.1 to 3% by weight of lauric acid;
0.1 to 1% by weight of aluminum hydroxide;
0.1 to 1% by weight of potassium sorbate;
and 0.1 to 1% by weight of citric acid.

5. The composition of claim 1 , further comprising water.

6. The composition of claim 5 , comprising 35 to 60% by weight of water.

7. The composition of claim 1 , further comprising:
PEG-9 dimethicone;
dimethicone/PEG10/15 crosspolymer;
benzyl alcohol;
cyclohexasiloxane;
dimethicone;
quaternium-90 bentonite;
sodium chloride;
hexylene glycol;
PEG/PPG-18/18 dimethicone;
dimethicone/vinyl dimethicone crosspolymer;
salicylic acid; and
methicone.

8. The composition of claim 7 , comprising:
0.1 to 3% by weight of PEG-9 dimethicone;
0.1 to 3% by weight of dimethicone/PEG10/15 crosspolymer;
0.1 to 3% by weight of benzyl alcohol;
0.1 to 3% by weight of cyclohexasiloxane;
0.1 to 3% by weight of dimethicone;
0.1 to 1.5% by weight of quaternium-90 bentonite;
0.1 to 1.5% by weight of sodium chloride;
0.01 to 1% by weight of hexylene glycol;
0.01 to 1% by weight of PEG/PPG-18/18 dimethicone;
0.01 to 1% by weight of dimethicone/vinyl dimethicone crosspolymer;
0.01 to 1% by weight of salicylic acid; and
0.01 to 1% by weight of methicone.

9. The composition of claim 1 , wherein the composition is an emulsion, a lotion, a gel, or an ointment.

10. The composition of claim 9 , wherein the composition is an emulsion.

11. A method for protecting skin from ultraviolet radiation comprising applying the composition of claim 1 to skin in need thereof.

12. The method of claim 11 , wherein the composition is applied to facial skin.

13. The method of claim 11 , wherein the composition is applied to skin on a user's arms or hands.

Assignees

• Mary Kay Inc

Inventors

• Norman Greg

Classifications

• A61K8/375

  the alcohol moiety containing more than one hydroxy group · CPC title

• A61Q19/00

  Preparations for care of the skin · CPC title

• A61K8/37 Primary

  Esters of carboxylic acids · CPC title

• A61K8/85

  Polyesters · CPC title

• A61K8/361

  Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof · CPC title