초록

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.

대표청구항 ▼

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 polygl

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 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. 2. The method according to claim 1 wherein the contact angle of the composition is from about 55 to about 70° immediately after topically applying the composition with shear. 3. The method according to claim 1 wherein the emulsifier has an HLB of less than about 9. 4. The method according to claim 1 wherein water exits the HIPE of the composition to create a hydrophilic surface on the composition during application. 5. The method according to claim 1 wherein additional composition having a hydrophobic exterior is applied and slips over hydrophilic surface of previously applied composition. 6. The method according to claim 1 wherein from about 45 to about 75% by weight water in the topical composition is lost after about 200 seconds from application. 7. The method according to claim 1 wherein water soluble active is evenly distributed in the absence of generating a wet-feeling sensation. 8. The method according to claim 1 wherein the water soluble active is DHA. 9. A topical composition comprising a HIPE as used in the method of claim 1. 10. The topical composition comprising according to claim 9 wherein the topical composition is externally hydrophobic before application and externally hydrophilic after application with shear. 11. The composition according to claim 9 wherein the composition has a contact angle against water of greater than about 90° before application and from about 55 to about 70° immediately after application with shear. 12. The method according to claim 1 wherein the HIPE consists essentially of ingredients 1 through 7.