Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Cyclopentanohydrophenanthrene ring system doai
Patent
1987-12-11
1991-03-12
Sneed, H. M. S.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Cyclopentanohydrophenanthrene ring system doai
514182, A61K 3156
Patent
active
049993488
ABSTRACT:
Cosmetic and pharmaceutical compositions and methods comprising delivery systems for the controlled release and enhanced penetration of biologically active materials (e.g., Vitamin A) to the skin. The delivery systems comprise cholesteric liquid crystals wherein the active material is retained within the lamellar molecular structure (i.e., between the molecular sheets) of the cholesteric liquid crystal.
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Cioca Gheorghe
Hayward James A.
Herstein Morris
Smith Walter P.
Tan Manuel L.
Barnes Richard M.
Cassingham John J.
Estee Lauder Inc.
Saba James
Sneed H. M. S.
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