Alcohol affects your blood sugar level to such an extent, that it may cause loss of bowel function control, and cause diarrhea, with the same side effects as vomiting. Cause-and-effect: Just like your knees go weak on you from too much booze, so does your bowel.
*Do not brush your teeth, spray cologne, or put on tight clothes during your tanning time, which is 6-8 hours after your session. *You can apply a mineral powder on your face/body and wear lipstick and mascara if you are going out during your tan time. (6-8 hours after your spray tan).
The longer you can wait, the better. Delaying a shower after spray tanning helps you create that bronze glow that you desire. Your sunless tan isn't instant -- it will first appear 4 hours after your session, and the color will continue to darken for another 24 hours or so as the DHA is absorbed.