Release of Propolis Phenolic Acids from Semisolid Formulations and Their Penetration into the Human Skin <i>In Vitro</i>

<table>Penetration of ferulic, coumaric, caffeic, vanillic acids, and vanillin into epidermis and dermis after aqueous propolis extract application for 24 hours.</table>

Evidence-Based Complementary and Alternative Medicine

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Figure 3

Figure 3: Release of Propolis Phenolic Acids from Semisolid Formulations and Their Penetration into the Human Skin <i>In Vitro</i> 

Evidence-Based Complementary and Alternative Medicine

Release of Propolis Phenolic Acids from Semisolid Formulations and Their Penetration into the Human Skin In Vitro

Figure 3