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US 7,407,665 B2Granted
Skin care cosmetic compositions and methods for microemulsification of sebum on contact
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsLei Huang, Carlos Co, Alexander Lips
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Abstract
A combination of a non-ionic tri-block poly-propylene-oxide, poly-ethylene-oxide alcohol ether surfactant coupled with block polymer poly(Butadiene-b-Ethylene Oxide) is an excellent surfactant phase to micro-emulsify sebum on contact. A method of micro-emulsification of sebum on contact with inventive compositions according to the present invention will form micro-emulsions which can enhance (1) deep pore cleansing of skin and (2) delivery of skin benefit actives into the skin.
Claims11
A skin care cosmetic composition comprising:
- (i) about 1% to about 40% of a compound having the formula A:
- CH3—(CH2)7—O—PO9—EO5—H (A)
- wherein:
- O is an oxygen atom;
- PO is a propylene oxide group;
- EO is an ethylene oxide group;
- (ii) about 0.1% to about 0.6% of poly(Butadiene-Ethylene Oxide) wherein said poly-Butadiene chain has a molecular weight of about 1,000 to about 10,000;
- and wherein said poly-Ethylene Oxide chain has a molecular weight of about 1,000 to about 20,000;
- and
- (iii) a cosmetically acceptable vehicle;
- wherein the composition forms a micro-emulsion with sebum.
8 more elements
Dependencies are inferred from the claim text.