Product for treating the skin comprising a polyamine microcapsule wall and a skin lightening agent
View Patent ↗The present invention features a product including a water-insoluble substrate and a plurality of microcapsules comprising a microcapsule wall surrounding a liquid core, and the use thereof.
1. A product for application to the skin comprising: (i) a water-insoluble substrate; (i) a liquid impregnate having a viscosity of less than about 10,000 cps, wherein said liquid impregnate is present in a weight ratio to the water-insoluble substrate that is greater than about 5%; (iii) a plurality of microcapsules comprising a microcapsule wall surrounding a liquid core, wherein the microcapsule wall comprises a polyamine; and a skin lightening agent.
2. The product of claim 1 , wherein the microcapsule wall is readily fractureable into one or more fragments upon pressure of less than about 1 psi.
3. The product of claim 1 , wherein said liquid impregnate is present in a weight ratio to the water-insoluble substrate that is greater than about 50%.
4. The product of claim 1 wherein the polyamine comprises monomers of melamine, urea, and combinations thereof.
5. The product of claim 1 wherein the microcapsules have an average particle size that is in a range from about 100 micron to about 500 microns.
6. The product of claim 1 wherein the liquid core comprises a benefit agent selected from a group consisting of a retinoid, a tocopherol, an alkanolamine, an enzyme, and salts and esters thereof.
7. The product of claim 1 wherein the water-insoluble substrate comprises a non-woven, fibrous material.
8. A method of delivering a benefit agent to an expanse of skin, comprising: (a) contacting the skin with a product comprising a water-insoluble substrate, a liquid impregnate, a plurality of microcapsules comprising a microcapsule wall, the microcapsule wall comprising a polyamine, wherein the microcapsule wall surrounds a liquid core, and wherein the product further comprises a skin lightenting agent, wherein said contacting comprises laying said substrate in contact with said expanse of skin for a period of time, and wherein said contact ruptures the microcapsule wall of said microcapsules; and (b) transferring an amount of said benefit agent from the product to the skin.
9. The method of claim 8 , wherein said liquid impregnate is present in a weight ratio to the water-insoluble substrate that is greater than about 50%.
10. A method of claim 8 , wherein said benefit agent is comprised within said microcapsule.
11. A method of claim 8 , wherein the microcapsule wall is readily fractureable into one or more fragments upon pressure of less than about 1 psi.
12. A method of treating an expanse of skin, comprising:
(a) contacting the skin with a product according to claim 1 , wherein said contacting comprises laying said substrate in contact with said expanse of skin for a period of time, and wherein said contact ruptures the microcapsule wall of said microcapsules; and
(b) removing said product from said expanse of skin, thereby providing an increase in skin whitening.
13. A method of claim 12 , wherein said liquid impregnate has a viscosity less than about 10000 cps.
14. A method of claim 12 , wherein said liquid impregnate has a viscosity less than about 1000 cps.
15. A method of claim 12 , wherein said expanse of skin includes the face.
16. A method of claim 12 , wherein said period of time is from about ten seconds to about one hour.