You can usually find Pro-Tan and Jan Tana stuff at a supplement store. Dream Tan doesnt' take all the prep (e.g. Pro-Tan smells like shit and takes a few layers sprayed on, let it dry for an hour and then set overnight, take a shower , do it again) - Dream Tan you just rub on. But don't touch it after you put it on - it can smear pretty bad. A friend of mine used Dream Tan at a comp last year - he looked like he'd been rolling in curry for the morning show -- kinda shiny orange. But he took a shower before the night show and it looked great -- maybe you need to do put it on the night before the show, let it set for a while and then shower it off. Pro-tan just sucks to put on. Also have to watch the stuff around your face. I've only used these things specifically for a comp, never as a substitute for a regular tan.
All of these being mentioned are literally paint on tan stuff and they will crack and run when you sweat, and then take a couple of days to get the worst of it off and several weeks before it comes off of your finger nails.