Once a week is enough. I suggest you try whitening method 1. Dissolve vinegar and salt in water at a ratio of about 9: 3: 1. Wet the towel with the mixed solution and rub it on your face once in the morning and once in the evening (if you want to wipe it once or twice, it's no problem). It works well. It works.

Suggestion: Wash oily skin once every three days and dry and sensitive skin once every 1-2 weeks.