Washing the hands for a minute with water and soap more times a day and applying a hand sanitizer prepared with water and at least 60% alcohol, these are two of the rules that you should follow in order to counteract the growth of coronavirus. However, hand sanitizers are, now, a bit difficult to find or, if you find them, they are too expensive. WHO has published on its websites the recipe of a hand sanitizer by using water, alcohol and hydrogen peroxide. A note has to be added, hydrogen peroxide has just the purpose to kill bacterial spores in the solution and has not a specific antiseptic action for hands. In the video we’ll see also how to wash the hands, according to the guide lines of WHO.