can i wax or shave before and after a spray tan? Try to wax or shave 24 hours prior to your spray tan to reduce your skin’s sensitivity. Wait for as long as possible after a spray tan to shave and avoid waxing until your tan has faded. Related articles what should I wear to my spray tan appointment? how long after a spray tan do i need to wait before showering? what should i discuss with the therapist prior to my spray tan? is there anything i should do to prepare my skin for a spray tan? how can i extend the life of my spray tan?