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US 8,299,127 B2Granted
Method and composition for evenly applying water soluble actives
AssigneeConopco, Inc.
InventorsLou Anjing, Qiu Qiang
Life of this patent
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Abstract
A method and composition for evenly applying water soluble actives is described. The method includes applying a composition with a HIPE to skin and generating a film having a hydrophilic surface so that composition and active can be evenly applied.
Claims12
A method for evenly applying a water soluble active, the method comprising the steps of:
- (a) applying to dry skin a topical composition comprising a water-in-oil HIPE, the HIPE comprising:
- 1) water;
- 2) emulsifier from about 0.5 to 12% by weight;
- 3) steric stabilizer comprising a polyether or polyglycerine cross-linked silicone elastomer or both;
- 4) depletion stabilizer comprising an alkyl modified cross-linked silicone elastomer where the cross-linking group has a chain length from about 8 to about 26 carbon atoms;
- 5) oil;
- 6) non-emulsifying elastomer, and
- 7) water soluble active;
- and
- (b) shearing the topical composition during application onto the skin resulting in free water creating a hydrophilic surface on the topical composition applied while simultaneously maintaining water in the HIPE for the water soluble active
- wherein the topical composition, prior to applying, has a contact angle against water which is greater than about 90° and less than about 70° immediately after topically applying with shear and further wherein the weight ratio of depletion stabilizer to steric stabilizer in the HIPE is from about 1:3 to about 3:1.
8 more elements
Dependencies are inferred from the claim text.