When the skin is dull and yellow with acne, the skin may have problems such as excessive oil secretion and uneven pigmentation. There is no special method to treat this condition due to the poor skin condition of an individual, so you can choose the way of medical beauty; if it is caused by gastrointestinal dyspepsia, menstruation and other reasons, patients need to keep the skin clean first, avoid excessive touching, and actively deal with it after determining the cause. If the skin is yellow and acne caused by gastrointestinal dyspepsia, you can start with internal regulation from both diet and exercise. Diet is recommended to drink more warm water to promote metabolism. Food is too greasy may cause constipation, resulting in poor tone and acne, it is recommended to increase the food of fresh vegetables, fruits and other substances containing high fiber. At the same time, try to exercise 20-30 minutes a day to promote gastrointestinal peristalsis, to help discharge waste and toxins, and improve the skin condition. When a woman is in her menstrual period, her hormone levels are disturbed, causing dull yellow skin and acne, which usually requires no special treatment and will be relieved when her period is over. During this period, it is important to take proper rest, eat properly and try not to eat cold and stimulating foods. Diseases such as polycystic ovary syndrome can also lead to endocrine disorders, which may cause dull yellow skin and acne, along with other symptoms that require targeted treatment.