Acne is a chronic inflammatory disease of the sebaceous glands of the hair follicles. There is generally no quick way to eliminate acne, and it can only gradually subside after gradual treatment. You can use oil-control skin care products and wash your face with warm water, and avoid squeezing and scratching the lesions with your hands. Second, drug treatment 1, local topical drugs: azelaic acid on inflammation and acne have a therapeutic effect, can also reduce post-inflammatory hyperpigmentation. Topical preparations of antibiotic drugs can be used. Vitamin A acid drugs, benzoyl peroxide, etc., can promote skin cell proliferation and keratinolysis. Selenium disulfide lotion has the effect of inhibiting fungi, parasites and bacteria, and can reduce the free fatty acid content of the skin to promote acne healing. 2. Systemic oral medications: including antibiotics and isotretinoin, among which isotretinoin can inhibit sebaceous gland lipid secretion, regulate follicular sebaceous gland duct keratinization, anti-inflammatory and prevent scar formation. Some patients with serious conditions can be treated with appropriate amount of prednisone. Third, physical therapy: such as photodynamic therapy, laser, red and blue light irradiation treatment, etc. The addition of red light is suitable for severe acne; intense pulsed light and pulsed dye laser are used to subside the red marks of acne; non-exfoliative and exfoliative fractional laser treatment for acne scarring.