Waxing for hair removal cannot be performed on clients who are taking Accutane, Retin-A or antibiotics, as this may cause skin sensitivity. The hair length must be 1/8 inch or 3-4 weeks of growth. We also recommend that you wait 24 hours after waxing before sunbathing, tanning or swimming. It is best to do 3-5 days before a special occasion or vacation.