Dynarex Zinc Oxide Ointment is a skin protectant that helps to soothe, prevent, and relieve diaper rash, chafed skin, and irritation. It can also be used to dry oozing from poison ivy, poison oak, and poison sumac, and to treat acne. This ointment comes in a 15 oz jar. Dynarex Zinc Oxide Ointment Skin Protectant, 15 oz. | 1 Each | Carewell.