Cosmetic composition

Patent metadata

Field	Value
Publication number	US-10363209-B2
Application number	US-201314430941-A
Country	US
Kind code	B2
Filing date	Aug 30, 2013
Priority date	Oct 11, 2012
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

Disclosed is a cosmetic composition comprising particles dispersed in a cosmetically acceptable carrier, wherein the particles comprise redox dye and reducing agent.

First claim

The invention claimed is:

1. A cosmetic composition comprising particles dispersed in a cosmetically acceptable carrier,
wherein the particles comprise polymer, redox dye and reducing agent;
wherein the cosmetically acceptable carrier is a water and oil emulsion;
wherein the particles are dispersed in the oil phase of the water and oil emulsion;
wherein from 50 to 100% by weight of the particles have a particle size of from 1 to 20 μm;
wherein the particles comprise polymer in an amount of at least about 80 to 98% by weight of the particles; and
wherein the cosmetic composition comprises the particles in an amount of at least 2% and less than 7%.

2. The composition as claimed in claim 1 , wherein the redox dye is selected from Vat red 1, solubilised Vat red 1, carmine, Safranin, Neutral red, solubilised alizarin red or a mixture thereof.

3. The composition as claimed in claim 1 , wherein the reducing agent is selected from reducing sugar, ascorbate, alpha hydroxyl acid, hydroquinone, cysteine, NaS2O3, NaNO2, NaBH4 or a mixture thereof.

4. The composition as claimed in claim 1 , wherein the polymer is a biopolymer.

5. The composition as claimed in claim 4 , wherein the particles comprise a hydrogel.

6. The composition as claimed in claim 1 , wherein the cosmetic composition is a moisturizer.

7. A process for forming the particles of claim 1 comprising the steps of: a) providing a mixture of redox dye, reducing agent, polymer and solvent; b) drying the mixture; and c) forming the mixture into particles.

8. The process as claimed in claim 7 , wherein the particles are formed by spray drying the mixture.

9. The process as claimed in claim 7 , wherein the particles are combined with a cosmetically acceptable carrier.

10. The process as claimed in claim 9 , wherein the cosmetically acceptable carrier is a water and oil emulsion.

11. The process as claimed in claim 10 , wherein the particles are added to the oil phase of the water and oil emulsion.

12. The composition as claimed in claim 4 , wherein the biopolymer is selected from the group consisting of polysaccharide, oligosaccharide protein and a mixture thereof.

13. The composition as claimed in claim 1 , wherein the water and oil emulsion is a water-in-oil emulsion.

Assignees

• Conopco Inc

Inventors

• Wu Chunwei

Classifications

• A61K2800/651

  The particulate/core comprising inorganic material · CPC title

• A61K8/06

  Emulsions · CPC title

• A61K2800/654

  The particulate/core comprising macromolecular material · CPC title

• A61K2800/592

  Mixtures of compounds complementing their respective functions · CPC title

• A61K2800/26

  Optical properties · CPC title