I tried a tanning salon's spray on tan booth before a vacation. I liked the way it looked (don't inhale in the booth!) It didn't "erase" the stretch marks, which are signigicant, but they were much less noticeable. It lasts about 3-4 days, but wears off in some places more slowly than others. Seems to hang on longer to dry areas. I would recommend a salt scrub or skin brushing before the spray.