Designed to teach proper hand washing techniques. Apply a small amount of Glo Germ gel to hands and shine the ultraviolet light to illuminate the simulated germs. Wash hands normally, then inspect carefully under the ultraviolet light to see if all of the "germs" are gone. Great for helping kids learn to wash carefully. Kit includes 2 oz. of Glo Germ gel, ultraviolet keychain light and an informative manual.