Patent ID: 7067152
Filing Date: 2006-06-27
Classification: A61K,A61Q,B82Y

Abstract:
1. A controlled release cosmetic composition for delivery to skin or lips consisting of: a plurality of solid nano-spheres, said solid nano-spheres consisting of a hydrophobic material and a first active agent, said first active agent is a cooling agent and one or more agents selected from the group consisting of fragrance, flavor, cosmetic agent, dermatological agent, and pharmaceutical agent, said plurality of nano-spheres being encapsulated in a moisture sensitive micro-sphere, and said moisture sensitive micro-sphere consisting of a moisture sensitive matrix material and a second active agent, encapsulated in said moisture sensitive matrix material, said second active agent is one or more of a cooling agent, fragrance, flavor, cosmetic agent, dermatological agent or pharmaceutical agent, said moisture sensitive micro-sphere dissolves to release said second active agent and said plurality of nano-spheres upon contact with moisture from the skin or lips to provide a burst of said second active agent and said nano-spheres and said nano-spheres release said first active agent continuously thereafter for an extended period of time or said micro-sphere swells or softens upon contact with moisture from the skin or lips to slowly release said second active agent and said nano-spheres and said nano-spheres release said first active agent continuously thereafter for an extended period of time.