The key is to use soap and water. Wet your hands, apply soap, rub them together for at least 20 seconds, covering all surfaces, including the backs of hands, between fingers, and under nails. Then rinse thoroughly and dry with a clean towel.
First, wet your hands with clean running water. Then, apply enough soap to create lather. Scrub your palms, the backs of your hands, between your fingers, and under your nails. Rinse off the soap and dry your hands completely. This is a basic and effective way to wash your hands.