Washing your face at night will rejuvenate tired skin. Washing your face at night can remove the dust that comes into contact with facial skin during the day, keep sweat pores unblocked, keep bedding clean and tidy, and improve your awareness of being different from animals as a human being. Washing your face also varies from person to person, from time to place. Sweat a lot in hot summer, and the number of times you wash your face can be decided according to the situation. Generally, it is advisable to wash your face 2 ~ 3 times a day in winter and spring and autumn, and people with oily skin can do it slightly more than 1 ~ 2 times.