Question: how long do you have to wait to fake tan after shaving?
Answer: Shave. Unless you don't mind being hairy for a few days, shave immediately before applying self-tanner. The reason: Shaving your body in the day or two after applying self-tanner can strip away the color. If you wax, make sure to do so at least 48 hours before applying self-tanner to avoid skin irritation.