Patients who are prone to acne or are already acne-prone should reduce their milk intake, especially skim milk. There are a number of studies that have found that milk and dairy products contribute to the development of acne, especially skimmed milk, and the reason for this may be due to the effects of natural hormonal components or other bioactive molecules in milk. If acne is a serious problem, you can reduce your intake of milk as well as dairy products. Also foods that are high in carbon and low in fiber, such as a variety of sugary beverages and refined rice and noodles, can aggravate the development of acne. Acne is caused by many reasons, the most important is to regulate the level of sex hormones, the secretion of sebaceous glands and the proliferation of local bacteria, etc.. The most important thing is to regulate the level of sex hormones, sebaceous gland secretion and localized bacterial proliferation, etc. Diet should be done to reduce the intake of spicy and stimulating foods, and to do a low sugar diet. In the final analysis, dietary control is only an aid, if the acne is more serious, it is best to find the cause with the help of a doctor, and symptomatic treatment.