Dr. Smith’s Diaper Ointment is specially formulated to treat diaper rash and is sold without a prescription. Dr. Smith’s Diaper Ointment contains 10% Zinc Oxide which acts as a barrier keeping moisture away from the skin, contains lanolin to keep moisture from escaping into the diaper and also contains Thymol Iodide, an anti-fungal, anti-infective and an anti-septic, allowing it to clean up yeasts and fungi that may compound the diaper rash. Its ointment base is Petrolatum which soothes burns and abrasions of the skin. Dr. Smith’s Diaper Ointment can also be used for many skin inflammations such as insect bites, mild sunburn, poison ivy, poison oak, poison sumac.