The NHS say you should wash your hands with soap and water for at least 20 seconds, to avoid catching or spreading COVID-19. But that you should use hand sanitiser if soap and water aren’t available. Public Health England specify that hand santisers with at least 60% alcohol content are the next best option after soap and water.
There are two types of hand sanitisers; alcohol-based and alcohol-free. Alcohol-based hand sanitisers contain different amounts and types of alcohol, often between 50 percent and 95 percent. Usually in the form of isopropyl, ethanol or n-propanol acohol. Alcohol is known to kill most germs dead, including the Coronavirus (COVID-19).