Due to malnutrition, human qi and blood are damaged, and insufficient qi and blood will lead to skin deterioration. In this case, it is necessary to pay attention to gradually returning to normal diet. You can't just control your diet, but you can improve it by drinking more water and exercising more. Controlling diet does not mean not eating. It is best not to eat foods and snacks rich in animal fat, but to eat foods or fresh vegetables rich in protein in moderation. Exercise every day, such as jogging and swimming.