1. Wash your face with diluted vinegar. The mixture of vinegar and glycerin also has moisturizing effect. Pay attention to less vinegar, about the ratio of 1:4, otherwise it will irritate the skin.

2. Eat VC regularly, one tablet a day. Do not eat too much. Eating too much may cause other diseases.

3. Wash your face with the second rice washing water.

The above methods should be adhered to, and they will have an effect in a week or two.