Sato Vetic Cream 15g For Athlete's Foot, Ringworm, Tinea Cruris. Undecylenic Acid Is An Unsaturated Fatty Acid Contained In Human Sweat And Keeps The Skin Surface Acidic And Inhibition Of Morphogenesis Of Fungus. Zinc Undecylenate Is Undecylenate Acid + Zinc, And Zinc Has Anti Inflammatory Effect....