This product has been used by doctors, hospitals and nursing homes since 1877. Now it is being used to help heal and prevent skin irritation in people, horses, cats and dogs! Conditions treated with Columbia Antiseptic Powder have included razor irritations, thrush, diaper rash, poison ivy, sunburn, chafing, minor cuts and sores, saddle sores, collar galls, proud flesh, mud fever, hoof rot, hot spots, swimmers ear and insect bites. Directions: Apply liberally to the affected areas.