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US 6,440,432 B1Granted
Skin cosmetic compositions containing dextran or maltodextrin and a weak carboxylic acid
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsSurajit Mukherjee, Donald Rick, Stephan Samuel Habif, Ronni Lynn Weinkauf
Life of this patent
Estimating the term…
Abstract
Cosmetic skin compositions containing a dextran or maltodextrin and a weak carboxylic acid. Dextran enhances the anti-aging activity of the weak acids and reduces skin irritation that is sometimes caused by the weak acid active.
Claims10
A skin cosmetic oil-in-water emulsion composition consisting essentially of:
- (i) from about 0.5 to about 20 wt. % of a dextran or maltodextrin;
- (ii) from 2 to about 12 wt. % of a weak carboxylic acid having pKa of above about 3;
- and
- (iii) a cosmetically acceptable vehicle;
- wherein the pH of said composition is in the range of about 3 to about 6.
2 more elements
A skin cosmetic composition consiting essentially of:
- (i) from about 0.5 to about 20 wt. % of a dextran or maltodextrin;
- (ii) from 4 to about 20 wt. % of a weak carboxylic acid having pKa of above about 2 selected from the group consisting of glycolic acid and lactic acid;
- and
- (iii) a cosmetically acceptable vehicle;
- wherein said composition is an oil-in-water emulsion;
- and wherein the pH of said composition is in the range of about 3 to about.
3 more elements
A skin cosmetic composition consisting essentially of:
- (a) about 0.5 to about 20 wt. % of a dextran or maltodextrin;
- (b) from 4 to about 20 wt. % of glycolic acid;
- and
- (c) a cosmetically acceptable vehicle;
- wherein said composition is an oil-in-water emulsion;
- and
- wherein the pH of said composition is in the range of about 3 to about 6.
4 more elements
Dependencies are inferred from the claim text.