Hand wash refers to the process of cleaning hands using soap and water. It is an essential practice for maintaining hygiene and preventing the spread of germs and infections. Proper hand washing involves scrubbing all parts of the hands, including the palms, backs, and between the fingers, for at least 20 seconds. The Centers for Disease Control and Prevention (CDC) recommends hand washing before eating, after using the restroom, and after coughing or sneezing. In situations where soap and water are not available, using an alcohol-based hand sanitizer can be an effective alternative for reducing germs on the hands.