Tecnu®'s Oak-n-Ivy Outdoor Skin Cleanser is ideal for treating poison oak and ivy. For maximum effectiveness, apply within the first hours after exposure or when the rash first appears. The size of the affected area will determine the number of applications and packets necessary to properly treat the irritated skin. Active Ingredient: Deodorized Mineral Spirits, Water, Propylene Glycol, Octylphenoxy-Polyethoxyethanol, Mixed Fatty Acid Soap and Fragrance.