Method and system for shaving including a lubricant and a water-swellable polymer
AssigneeThe Gillette Company
InventorsBrian A. Rogers, Frank E. Badin, James A. Rudolph, Mingchih M. Tseng
Life of this patent
Estimating the term…
Abstract
A shaving unit includes a composite that has a surface for engaging the user's skin. The composite contains a water-insoluble polymer, a shaving aid in the form of a lubricant, and a water-swellable polymer which, upon contact with water, enhances the release of the lubricant from the composite onto the skin.
Claims26
A shaving system for wet shaving comprising support structure supporting a blade member and defining an external skin engaging portion adjacent to said blade member, said skin engaging portion including a composite comprising a water-insoluble polymer, a lubricant, and a water-swellable polymer that can absorb at least five times its weight in water at 22.degree. C. and has a solubility in water of less than 1000 ppm at 22.degree. C.
A method of shaving, comprising contacting skin in the presence of water with a razor so as to sever hair on said skin, said razor having a blade and a skin engaging composite comprising a water insoluble polymer, a lubricant, and a water-swellable polymer, said water-swellable polymer having a solubility in water of less than 1000 ppm at 22.degree. C. and absorbing at least five times its weight in water at 22.degree. C., wherein said contacting step includes the steps of contacting said skin engaging composite of said razor with said water to cause said water-swellable polymer to swell, and contacting said skin with said composite of said razor to transfer said lubricant from said composite onto said skin.
Dependencies are inferred from the claim text.