Hand sanitizers are alcohol-based solutions designed to reduce germs on the skin. They typically contain at least 60% alcohol, which helps kill bacteria and viruses when soap and water are not available. Hand sanitizers come in various forms, including gels, foams, and wipes, making them convenient for on-the-go use. Using hand sanitizers is especially important in settings like hospitals, schools, and public places, where the risk of spreading infections is higher. While they are effective, hand sanitizers may not eliminate all types of germs, so washing hands with soap and water is still recommended when possible.