Confidence votes 32. 24 hours should do it, but just in case I would suggest waiting until the stinging stops then put on sunscreen and wait 20 minutes, after that you can tan like that if you want a light tan if you prefer a darker tan you should wash some or even all the sunscreen off.ost lotions have DHS in it, which is like a tinted moisturizer. If you used a lotion you should wait 4 hours so the DHS has had time t … o completely soak into your skin, after the 4 hour wait you can shower. If you didn't use a lotion you can shower whenever you feel like it.