Causes of acne: 1, exuberant secretion of sebaceous glands-the stimulating effect of androgen not only exists in men, but also maintains a certain concentration in women, which not only has a proliferation and stimulating effect on sebaceous glands, but also aggravates the inflammatory reaction caused by Corynebacterium acne, stimulates hair follicle keratinization and forms acne. 2. Hair follicle sebum unit blockage-abnormal corner and abnormal keratinization of hair follicle keratinocytes are important reasons for hair follicle sebum unit blockage. Under normal circumstances, epidermal keratinocytes will extend all the way to the top of the skin sac, and hair follicle cells should be metabolized smoothly before sebum can be secreted to the skin surface. However, some cells in the hair follicle mouth are closely attached and are abnormal keratinization. Abnormal attachment of keratinocytes without shedding will cause the secretion of metabolites below, and abnormal keratinization is indirectly affected by the secretion of bacteria and oil, which are interrelated and promote the formation of acne. 3, the influence of bacteria There are many colonies on the skin surface. Corynebacterium acne especially likes the anaerobic environment in hair follicles, and their existence decomposes the fat on the skin surface. Therefore, it causes irritation to the human body, and some toxic substances can also induce inflammation. Further damage hair follicles and skin. 4. Hereditary constitution The size, density, activity, hair follicle structure and endocrine of sebaceous glands are all affected by heredity, which also shows that acne is related to heredity. Usually, children with acne can often see the scars left by acne on their parents' faces, and the chances of children with acne are several times higher. There are three conventional treatments for acne: First, western medicine treatment: taking some antibiotics or hormone drugs such as sex hormones and progesterone for treatment. This method can be effective in a short time, but taking these drugs can easily lead to endocrine disorders and affect health. Second, Chinese medicine treatment: according to the causes of acne, it can be divided into damp-heat syndrome, blood-heat toxin syndrome and blood deficiency and wind dryness syndrome. Taking Chinese medicine for conditioning treatment has the disadvantage of slow effect. Third, laser therapy: this is the most widely used therapy at present. The use of laser with a specific wavelength has a strong effect on inhibiting excessive sebum produced by acne and killing a variety of bacteria that cause acne, so that new acne can recede in time. The process of laser acne removal is more comfortable and painless, with no adverse stimulation to the skin, no photosensitive phenomenon, and the treatment process is relaxed and free of burden.