It is important that you wash your hand thoroughly. Wash your hands for a minimum of 15 seconds, until it forms a rich lather. Do not forget to wash under your cuticles, in between your fingers and up to your arm. Remember to dry your hands properly with a clean paper towel. Do not use air dryer, especially the ones in public toilets to dry your hands as you are only recontaminating your hands with more germs. Think about it, where do you think the air that dries your hand comes from?