You are the person who decides what you want to wear during the spray tan treatment. It is no problem at all to keep a bikini or swimming trunks on. Do you not like being naked but you don’t want to see white stripes on your body after the spray tan treatment? Then just keep your bikini top or bra on and lower the straps. The spray is completely washable.
For a natural spray tan result, a full-body coverage (where you are topless or naked in our cabin) is best, but the choice is entirely up to you!
Men are obliged to keep their boxers or underpants on.