I read online you shouldn't because they aren't sure of the effects.
They tell us no in Britain as nobody knows what inhaling the tanning solution will do to baby. Why not use a self tanning lotion instead?
Aslong as you dont inhale the chemicals its safe.
Not 100% sure but I think you can use topical tanning sprays. If no one else knows for sure, ask your doctor. Or you can go to the "ask a doctor" forum on here and ask that question.