Have fun while learning about how germs spread and the importance of proper handwashing. First apply a small amount of glow powder to hands or other surfaces. Next, use the included blacklight to magically reveal the "germs". Finally, wash off the powder with soap and water, then use the blacklight again to check your handwashing skills. Provides safe, interactive tools for demonstrating how easily harmful bacteria and viruses can transfer from one surface to another. Comes with blacklight, non-toxic glow powder and activity suggestions. Blacklight requires 3 AAA batteries, sold separately. Designed for ages 6 and up.