(YouTube Link)
Glow sticks are a mixture of bis (2,4,6-trichlorophenyl) oxalate, a few other chemicals that serve as a base, and a fluorescent dye. This video by Nurd Rage provides detailed instructions on how to make your own, as well as an explanation of the chemistry involved.
via CrunchGear
also... It puts the lotion on the skin or else it gets the hose again