Types of aesthetic skin diseases: skin appendage diseases (e.g. acne, rosacea), pigmentary abnormalities (e.g. vitiligo, freckles, chloasma), hair abnormalities (e.g. baldness, male pattern baldness, female hirsutism), viral infections (e.g. flat warts, infectious molluscum contagiosum) and facial tumor skin diseases (e.g. sweat duct tumors, sweat cyst tumors, tuberous sclerosis, seborrheic keratosis, basal cell carcinoma, etc.). 1. Prevention and treatment of acne and rosacea: (1) Live a disciplined life, eat a light diet, have a smooth bowel movement, and get enough sleep. Do not squeeze with your hands or rub the lesions with a towel. (2) In light cases, topical anti-inflammatory and antiseptic or retinoic acid or salicylic acid preparations should be used, while in heavy cases, tetracycline or macrolide antibiotics should be taken, with appropriate addition of retinoic acid for oral use or glucocorticoid injection within the skin lesions. (3) For those who are poorly treated with medication or cannot tolerate the side effects of medication, blue light or/and red light irradiation treatment should be chosen, which is effective, has few side effects and has a low recurrence rate. (4) Acne (whitehead acne and blackhead acne) should be treated with fruit acids or laser, and fractional laser has good effect on pitted scars. (5) The redness of rosacea is well treated with photorejuvenation or redness removal laser. Remember that any treatment requires a course of treatment rather than a time to see significant results and requires a little patience. 2, vitiligo instructions: (1) the cause is still unclear, recurrence is unpredictable, can be accompanied by thyroid disease or immune abnormal disease. (2) advice to try not to eat junk food (such as canned, smoked or packaged food), avoid trauma, etc. (3) Optional treatments include topical glucocorticoids or tacrolimus or carbotriol, topical photosensitizing agents, narrow-frequency UVB, 308 nm excimer light and autologous epidermal transplantation, and appropriate systemic glucocorticoids and immunomodulators for those who progress rapidly. The choice of treatment methods should be guided by dermatologists according to the area and stage of skin lesions, and attention should be paid to the occurrence and treatment of adverse reactions. 3.Facial pigmentation prevention and treatment: (1) Avoid sun exposure, adjust endocrine and pay attention to liver and kidney function. (2) Photorejuvenation treatment is effective for freckles, post-inflammatory pigmentation and superficial chloasma, while C6 laser treatment is effective for nevus of Ota, coffee spots and age spots. (3) Localized chemical cautery, topical depigmentation agent or spot removal agent or spot removal mask treatment are also effective, but should be cautious, improper treatment may lead to pigment loss. 4, skin beauty tips: regular life, happy mood, rich nutrition is the key; avoid the wind and sun, regular moisturizing and moisturizing, regular massage skin is the main point; appropriate use of modern laser technology or carnitine injection can slow down the process of skin aging.