Method and composition for evenly applying water soluble actives
First Claim
Patent Images
1. 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, and7) 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 activewherein 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.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
12 Claims
-
1. 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.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification