Terpene Penetration Enhancers in Propylene Glycol/water Co‐solvent Systems: Effectiveness and Mechanism of Action

The effects of propylene glycol/water co‐solvent systems and terpene penetration enhancers (1,8‐cineole, menthone, (+)‐limonene and nerolidol) on the absorption rate of the model hydrophilic permeant, 5‐fluorouracil, were investigated using excised human skin.

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