Self tanning composition containing DHA and .alpha. hydroxy acids

• US 5,942,212 A
• Filed: 05/21/1997
• Issued: 08/24/1999
• Est. Priority Date: 11/19/1996
• Status: Expired due to Term

• Current Assignee: E-L Management Corp.
• Original Assignee: E-L Management Corp.
• Inventors: Tchinnis, Paul, Lentini, Peter J., Muizzuddin, Neelam
• Primary Examiner(s): Dees, Jose' G.
• Assistant Examiner(s): Williamson, Michael A.
• Application Number:
  US08/859,872
• Time in Patent Office: 825 Days
• Field of Search: 514/558, 514/675, 424/59
• US Class Current: 424/59
• CPC Class Codes: A61K 8/35 Ketones, e.g. benzophenone
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61Q 19/04 for chemically tanning the skin topical sun or radiation screening or tanning preparations A61Q17/04

Abstract

The present invention relates to a self-tanning composition comprising an effective amount of DHA in combination with an effective amount of a long-chain alpha hydroxy acid(AHA). In a preferred embodiment, the AHA is α-hydroxy lauric acid.

Claims

1. A self tanning composition comprising an self-tanning effective amount of DHA in combination with an enhancing effective amount C₈ -C₁₈ alkyl α

-hydroxy acid.

2. The composition of claim 1 in which the acid is a C₁₂ acid.

3. The composition of claim 1 in which DHA is present in an amount of from about 2.5-10% by weight.

4. The composition of claim 1 in which the α

-hydroxy acid is present in an amount of from about 0.1-20% by weight.

5. The composition of claim 4 in which the acid is α

-hydroxy lauric acid.

6. The composition of claim 1 which comprises DHA in an amount of from about 2.5-10%, and α

-hydroxy lauric acid in an amount of from about 0.1-20%.

7. The composition of claim 6 which comprises from about 5-10% DHA, and from about 1-5% α

-hydroxy lauric acid.

8. The composition of claim 7 which comprises about 9% DHA and about 1.5% α

-hydroxy lauric acid.

9. A method for enhancing the self-tanning effect of DHA which comprises combining a self-tanning effective amount of DHA with an enhancing effective amount of a C₈ -C₁₈ alkyl α

-hydroxy acid.

10. The method of claim 9 wherein the DHA is combined with the α

-hydroxy acid in composition comprising DHA in an amount of from about 2.5-10%, and the α

-hydroxy acid in an amount of from about 0.1-20%.

11. The method of claim 10 wherein the α

-hydroxy acid is α

-hydroxy lauric acid.

12. The method of claim 10 wherein the composition comprises from about 5-10% DHA, and from about 1-5% α

-hydroxy lauric acid.

13. The method of claim 10 wherein the composition comprises about 9% DHA and about 1.5% α

-hydroxy lauric acid.

14. A method of self-tanning which comprises applying to the skin a self-tanning effective amount of DHA with an enhancing effective amount of a C₈ -C₁₈ alkyl α

-hydroxy acid.

15. The method of claim 14 which comprises applying a composition comprising DHA in an amount of from about 2.5-10%, and the α

-hydroxy acid in an amount of from about 0.1-20%.

16. The method of claim 14 wherein the α

-hydroxy acid is α

-hydroxy lauric acid.

17. The method of claim 14 wherein the composition comprises from about 5-10% DHA, and from about 1-5% α

-hydroxy lauric acid.

18. The method of claim 14 wherein the composition comprises about 9% DHA and about 1.5% α

-hydroxy lauric acid.