First, jump into a cold bath. This won’t feel pleasant, but it’ll reduce the temperature of your skin quickly. Next, “apply a mild topical steroid to the affected area, like Cortate, as well as a thick, greasy moisturizer or a calamine lotion,” says Dr. Benjamin Barankin, a dermatologist based in Toronto. “Take a couple of ibuprofen pills as well, if the pain is intense, and make sure the area is well protected for the next six months or it’ll get burned again pretty easily.”