Skin conditioning compositions containing 12-hydroxystearic acid

• US 9,539,190 B2
• Filed: 05/05/2011
• Issued: 01/10/2017
• Est. Priority Date: 05/07/2010
• Status: Active Grant

• Current Assignee: Conopco, Inc. (Unilever PLC)
• Original Assignee: Conopco, Inc. (Unilever PLC)
• Inventors: Zhang, Qiqing, Khoshdel, Ezat, Moaddel, Teanoosh, Dobkowski, Brian John, Yuan, Su
• Primary Examiner(s): WORSHAM, JESSICA N
• Application Number:
  US13/695,440
• Publication Number:
  US 20130108566A1
• Time in Patent Office: 2,077 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/594 Mixtures of polymers
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/25 Silicon; Compounds thereof
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61K 8/585 Organosilicon compounds
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

Non-solid skin conditioning compositions comprising 12-hydroxy stearic acid, aminosilicone and water are disclosed. The compositions have a relatively low viscosity and are suitable for spreading on the skin.

Claims

1. A non-solid skin conditioning composition comprising:

(a) from about 1 to about 15% by weight of the composition of 12-hydroxystearic acid, where 12-hydroxystearic acid is in substantially non-crystallized, nonsolid form;

(b) an aminosilicone wherein the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from about 3;

1 to about 75;

1;

(c) from about 1 to about 90% by weight of the composition of water;

wherein when the water amount is greater than 20% by weight of the composition the composition further comprises a particle having an isoelectric point below the pH of the composition;

wherein the composition is in the form of a leave-on and an emulsion and wherein the viscosity of the composition at 25°

C. is in the range of from about 1 Pas to about 500 Pas.

2. The composition of claim 1 wherein the particle is selected from the group consisting of oxides of silicon, zinc, iron, cerium, zirconium, titanium or aluminum, stearates of zinc, magnesium, or calcium, metal silicates and mixtures thereof or the like.

3. The composition of claim 1 wherein the composition comprises at least about 20% of water and the particle comprises a silicon dioxide particle.

4. The composition of claim 1 wherein the composition is substantially free of surfactants.

5. The composition of claim 1 further comprising fumaric acid or salt thereof.

7. A method of treating dry skin, acne, photo-damaged skin, appearance of wrinkles, age spots, aged skin, sebum overproduction, the method comprising applying to the skin the composition of claim 1.

8. A method of lightening skin color, the method comprising applying to the skin the composition of claim 1.

9. The composition of claim 1, wherein the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from about 3:

1 to about 49;

1.

6. An additive for a skin conditioning composition comprising:

(a) from about 1 to about 15% by weight of the composition of 12-hydroxystearic acid; and

(b) an aminosilicone where the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from about 3;

1 to about 75;

1.

10. A skin conditioning composition comprising:

(a) from 1 to 15% by weight of the composition of 12-hydroxystearic acid;

(b) an aminosilicone, wherein the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from 2.3;

1 to 75;

1;

(c) from 1 to 90% by weight of the composition of water;

wherein when the water amount is greater than 20% by weight of the composition the composition further comprises a particle having an isoelectric point below the pH of the composition;

wherein the viscosity of the composition at 25°

C. is in the range of from 1 Pas to 500 Pas.

11. The composition of claim 10 wherein the particle is selected from the group consisting of oxides of silicon, zinc, iron, cerium, zirconium, titanium or aluminum, stearates of zinc, magnesium, or calcium, metal silicates and mixtures thereof or the like.

12. The composition of claim 10 wherein the composition comprises at least 20% of water and the particle comprises a silicon dioxide particle.

13. The composition of claim 10, wherein the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from 3:

1 to 75;

1.

14. The composition of claim 10, wherein the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from 2.3:

1 to 49;

1.

15. The composition of claim 10, wherein the weight ratio of the aminosilicone to the 12-hydroxystearic acid is from 3:

1 to 49;

1.