Please inform us if you are using RetinA, Renova, or any other vitamin A derivatives. You may not wax if using Accutaine in the past six months. Certain antibiotics and prescriptions will affect waxing. For a successful wax, avoid sun exposure to the area for 48 hours. Please avoid working out or any activity that will increase your body temperature or induce sweating for 48 hours. For a more comfortable treatment, hair should be 1/3 of an inch long.