When it comes to treating and preventing your baby's diaper rash, you want the best possible protection. That's why Desitin Diaper Rash Ointment is the pediatrician-recommended choice for maximum strength relief. Desitin ointment contains 40% zinc oxide, the highest level available without a prescription. This powerful ingredient works instantly to form a protective barrier on your baby's skin, sealing out wetness and irritants while allowing the skin to heal naturally.