Liposome encapsulated active agent dry powder composition
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United States of America Patent
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Jul 21, 1998
Issued Date -
N/A
app pub date -
Nov 3, 1997
filing date -
Sep 18, 1996
priority date (Note) -
Expired
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Abstract
A stable dry powder skin care powder having prolonged and controlled release properties, useful as baby powders, body talcs, deodorizing powders, OTC eczema preparations, foot powders, anti-fungal powders, etc. The dry powder is preferably prepared by a process comprising spray-drying a mixture of liposome encapsulated active agent, starch and maltodextrin. The particle is designed so that activity of, e.g., an anti-inflammatory agent such as Dragosantol.RTM. can be specifically triggered by skin conditions, such as moisture, for optimal timing of delivery.
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