Generally we say two days prior for a regular waxer. Clients who are getting waxed for the first time should get waxed one week before their holiday so the skin can settle. Ideally a first timer should arrange to get waxed a couple of months before going away and then again closer to the time. As wax is a heat treatment and wax naturally removes a layer of skin, skin is therefore more sensitive and can burn easier in the sun.