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US 7,067,152 B2Granted
Multi component moisture triggered controlled release system that imparts long lasting cooling sensation on the target site and/or provides high impact fragrance or flavor burst
AssigneeSalvona LLC
InventorsAdi Shefer, Samuel David Shefer
Life of this patent
Estimating the term…
Abstract
The present invention relates to cosmetic formulations comprising a multi component controlled release system that imparts long lasting cooling sensation and/or provides high odor or flavor intensity (i.e., high impact fragrance or flavor burst) in response to moisture. The controlled delivery system of the present invention is substantially free-flowing powder formed of solid hydrophobic nano-spheres that are encapsulated in a moisture sensitive micro-spheres.
Claims23
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.
Dependencies are inferred from the claim text.