Includes one 8oz bottle of hand washing training lotion. Can train up to 75 training applications per 8oz bottle. Simulates contamination using fluorescent particles which glow using black light. Also includes two black lights. Three AAA batteries per light not included. Simply wash hands and inspect with black light to reveal areas not properly cleaned. Repeat process until glowing areas are no longer visible. Instructions listed on products containers. Adult supervision required. These products are simply teaching tools to teach awareness and promote proper cleaning, hand washing, hygiene, and cross contamination. By no means does the use of these products guarantee that hands or any surfaces are clean or sanitary. They are not cleaning products, but cleaning teaching tools. It is up to the instructor, or user to implement the cleaning procedures they see fit, and follow CDC and similar recommendations by governing bodies.