I do not have any leads for you, but I am also interested in body paint. Hopefully someone out there has a suggestion for us both :)
you know what works really good?
i wear it to raves as war paint. it does sweat off if you are dancing a lot. but it stays on well otherwise. washes off easily with soap and water.
i think regular acrylic paint would work well too, depending on how much and where you want to put it. im a total uv fetishist, if it doesnt glow in the blacklight im not happy, lol.
There's not a lot of good glow in the dark body paint out there. But a number of brands make good UV paint.
They are mostly all water based, so if you sweat alot you may have to reapply. Using a setting powder over top can help though.
You could also try looking/asking at www.facepaintforum.com. It's an active forum and the people know a lot about body paints. There is also a store with very reasonable shipping.
Hey, I'm probably a little late for you, but you should try Glow in the Dark Liquid Latex Body Paint. It is perfect for what you need it for, its long lasting, dries fast and goes on and removes real easy and there are many colors to choose. Try out Liuidlatexstore.com we have some great products for low prices. If you have any questions feel free to contact me and I will be more than willing to help you out, best of luck.