SKIN CARE COMPOSITION AND METHOD THEREOF

• US 20190328645A1
• Filed: 06/28/2017
• Published: 10/31/2019
• Est. Priority Date: 06/30/2016
• Status: Active Grant

• Current Assignee: Boots Company PLC (Walgreens Boots Alliance Incorporated)
• Original Assignee: Boots Company PLC (Walgreens Boots Alliance Incorporated)
• Inventors: HICKS, Jake Thomas, TOMLINSON, Paul James
• Granted Patent: US 11,135,147 B2
• Time in Patent Office: Days
• CPC Class Codes: A61K 8/062 Oil-in-water emulsions
• CPC Class Codes: A61K 8/368 with carboxyl groups directly bound to carbon atoms of aromatic rings
• CPC Class Codes: A61K 8/676 Ascorbic acid, i.e. vitamin C
• CPC Class Codes: A61Q 19/007 Preparations for dry skin
• CPC Class Codes: A61Q 19/02 for chemically bleaching or whitening the skin
• CPC Class Codes: A61Q 19/08 Anti-ageing preparations
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations

Abstract

The disclosed technology relates to a composition comprising: 0.1 to 3 wt % (or 0.5 to 2.5 wt %) of a beta hydroxy acid, 0.05 to 3 wt % (or 0.09 to 2.5 wt %) of an O-substituted ascorbic acid or a derivative thereof, and a cosmetically acceptable medium comprising an aqueous phase, wherein a beta hydroxy acid is present at a higher concentration than O-substituted ascorbic acid or a derivative thereof. The disclosed technology further relates to the use and method of improving skin condition.

Claims

1. A composition comprising:

0.1 to 3 wt % (or 0.5 to 2.5 wt %) of a beta hydroxy acid, 0.05 to 3 wt % (or 0.09 to 2.5 wt %) of an O-substituted ascorbic acid or a derivative thereof, and a cosmetically acceptable medium comprising an aqueous phase, wherein a beta hydroxy acid is present at a higher concentration than O-substituted ascorbic acid or a derivative thereof.

2. The composition of claim 1, wherein the O-substituted ascorbic acid is represented by the formula:

3. The composition of claim 1 and claim 2, wherein the O-substituted ascorbic acid is 3-alkyl ascorbic acid.

4. The composition of claim 3, wherein the O-substituted ascorbic acid is 3-O-ethyl ascorbic acid.

5. The composition of any preceding claim, wherein the beta hydroxy acid is salicylic acid.

6. The composition of any preceding claim, wherein the composition comprises 1 to 2.5 wt % of a beta hydroxy acid and 0.09 to 2.5 wt % of an O-substituted ascorbic acid or a derivative thereof.

7. The composition of any preceding claim, wherein the composition has a weight ratio of beta hydroxy acid to O-substituted ascorbic acid or a derivative thereof of (i) 1:

1 to 1;

0.01, or (ii) 1;

0.7 to 1;

0.5 or (iii) 1;

0.5 to 1;

0.1.

8. The composition of any preceding claim, wherein the emulsion is an oil-in-water emulsion and the oil-in-water emulsion has an aqueous phase present at 40 to 90 wt % of the composition, and optionally wherein the oil phase is present at 10 to 60 wt % of the composition.

9. The composition of any preceding claim, wherein the composition does not include gluconolactone.

10. The composition of any preceding claim, wherein the composition has a pH ranging from 3 to 7 or 4.0 to 5.5.

11. The cosmetic use of a composition of any preceding claim.

12. The cosmetic use claim 11, wherein the composition is a skin care composition.

13. A method of improving skin care comprising administering to skin a composition of any one of claims 1 to 10.

14. The method of claim 13, wherein improving skin care includes (i) improving skin exfoliation, or moisturisation, or (ii) decreasing or preventing at least one of the following:

forming wrinkles or fine lines, skin sagging, or hyperpigmentation, or (iii) increasing skin firmness or skin laxity.

15. The use of the composition of any one of claims 1 to 10 to improve skin condition.