For most people, waxing is the ultimate hair removal method, however there are some cases in which it is better not to wax. We do not recommend waxing if clients are using the following medications as it causes sensitive skin, thin skin and weakens the skin: - Retin A - Renova - Differin - Isotretioin - Roaccutane. Please inform a Wax Angel if you have recently stopped taking one of these medications.