Morrison & Foerster LLP
Skin permeation enhancer composition for use with sex steroids
 A combination permeation enhancer for increasing the permeability of skin to sex steroids such as estrogens and progestogens comprising a polyhydric thioalcohol of 2 to 6 carbon atoms having at least one mercapto group and at least one hydroxy group and an aliphatic carboxylic acid of 8 to 24 carbon atoms or an ester thereof. 
Cygnus, Inc.
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Chia-Ming Jun Janan
Chiang Xia Jona