Acne, also known as pimples, is the scientific name for acne, an inflammatory reaction of the sebaceous glands of hair follicles. The causes of acne are complex, mainly related to androgens, sebaceous glands, abnormal keratinization of hair follicle sebaceous glands, Propionibacterium acnes infection, genetics, etc. Some people have a certain relationship with staying up late, low immunity, eating spicy and stimulating food, endocrine disorders or using cosmetics. After acne occurs, you need to eat a light diet, avoid staying up late, eat more vegetables and fruits, and try to avoid constipation. If there is no redness, swelling, heat or pain in acne, you can treat it with topical medication. If there are reactions such as redness, swelling, heat and pain, you must take anti-inflammatory drugs. In addition, some physical treatments, including photodynamic therapy and fruit acid peels, can also treat acne.