Some of the acidic ingredients in white vinegar can help skin's horny metabolism, avoid acne hyperplasia, and thus have a whitening effect. However, the white vinegar is so acidic that it is necessary to avoid directly applying white vinegar to the face. The best method is to reduce the concentration of white vinegar with warm water. Mix white vinegar and water according to the ratio of 1:3, dilute and shake; then put it on a Inside the small bottle. After washing your face every day, you can gently pat white vinegar on your face. The amount you need is not too much. The entire face is wet and ok. Once in the morning and in the evening, it is easy and convenient.