Britannica AI Icon

hand sanitizer: Media

cleansing agent

Videos

How Does Hand Sanitizer Kill Germs?
The labels always read, "Kills 99.99% of Germs!" but does the science back it up? 
Video: © American Chemical Society (A Britannica Publishing Partner)

Images

gel hand sanitizer
A person using gel hand sanitizer.
DAniel Kolena—iStock/Thinkstock
foam hand sanitizer
A person using foam hand sanitizer.
© AndreyPopov—iStock/Getty Images