Acne is also known as acne. A sudden increase in acne on the face may be caused by eating spicy and irritating foods, coffee, strong tea, strong alcohol or staying up late, poor rest, or poor mood. Sometimes acne is also related to zinc deficiency, oily skin, air pollution, irregular menstruation, hot and cold stimulation, use of irritating cosmetics to block hair follicles, oral contraceptives or gastrointestinal dysfunction, dry stools, etc. It is recommended to pay attention to skin cleanliness, use mild cleansing products in the morning and evening to remove oil and dirt, keep the hair follicles sebaceous ducts open, ensure quality sleep, maintain a happy mood, eat more vegetables and fruits, eat a light diet, and keep the bowels open.