Fully moisten your hands with clean water first, take an appropriate amount of liquid hand cleaner on your palms and rub your hands fully at least for more than 30 seconds, be careful to rub the fingertips and finger joints during this process, and allow the foam to cover all parts of the hand. After rubbing, rinse with running water. Finally, pay attention to dry with a clean dry towel or paper towel. It is best not to dry, because the rapid evaporation of surface water will cause partial loss of water in the skin, causing the skin to dry and become rough.