Acne, also known as clinical acne, is a common chronic inflammatory disease of the sebaceous glands of the hair follicles, which can be prevented by reducing skin irritation, avoiding oily cosmetics, keeping personal skin clean, and eating a reasonable diet. 1. Reduce skin irritation: This can be done by reducing skin irritation and avoiding products that irritate the skin, such as exfoliating products. Attention should also be paid to reducing excessive washing and scrubbing behaviors; protecting acne-prone areas from contact with helmets and tight clothing. 2. Avoid oily cosmetics: Avoid the use of oily cosmetics as well as sunscreens. 3. Keep personal skin clean: pay attention to keep personal skin clean and hygienic, especially after exercise, the oil and sweat on the skin will aggravate acne, so rinse as soon as possible after strenuous exercise. 4. Reasonable diet: In your daily diet, eat less candy sweets, more fat and spicy stimulating foods, drink more water and eat more fresh vegetables and fruits. Acne is caused by a variety of factors, want to completely prevent is more difficult, but through the above measures can effectively prevent and reduce the symptoms, once the acne, you can go to the hospital as soon as possible.