The most effective hand sanitizer is one that contains at least 60% alcohol, according to the Centers for Disease Control and Prevention (CDC). Alcohol-based hand sanitizers work by denaturing the outer protein layer of viruses and bacteria, effectively killing them.
When using hand sanitizer, it's important to apply enough to cover all surfaces of your hands and rub them together until they feel dry. Hand sanitizers should not be used as a substitute for proper hand washing, especially when your hands are visibly dirty or greasy.
However, when it comes to hand washing, it is generally recommended to use soap and water for at least 20 seconds. Soap and water are effective at removing dirt, grime, and other impurities, as well as killing germs.
Overall, both hand sanitizer and hand washing are important for reducing the spread of germs and keeping yourself and others healthy