White (8 oz Bottle) Lotion test to demonstrate personal contact. 'Infect' hands with a few drops and rub on entire hand, include underneath the nails. View germs under UV light; wash hands and view remaining (if any) germs under UV light again.Glo Germ is a fun, safe teaching tool used to illustrate how easily germs are transferred from surface to individuals and vice-versa. An ultraviolet light is used to show the multitude of places germs are collected and spread. Utilized as a teaching aid, Glo Germ illustrates the importance of washing hands and surfaces to prevent the spread of germs.