Fractional laser is used to treat a number of skin lesions and wrinkles by using a new type of local laser therapy. Fractional laser treatment range: mainly acts on local and overall skin peeling, repairing photo-aging skin, improving uneven skin tone, enlarged pores, rough skin, skin laxity, etc. It is especially suitable for removing various scar (such as post-acne scar) and wrinkles, acne marks, tattoos, pigmentation and pigmentation, as well as treatment of various pigmented moles, warts, seat sores, dermatitis, hemangioma, etc. on any part of the body surface. Among them, the non-ablative fractional laser is very effective for the treatment of stretch marks. Advantages of fractional laser: there are various operating tools, various spot shapes can be set according to the shape of the skin lesion, high surgical precision, short treatment time, little thermal damage, fast wound healing, and no severe pain. Patients generally need 3-4 treatments for skin improvement, with each treatment interval of 4-6 weeks. Fractional laser post-operative care: Redness and burning sensation may last up to 2 days, scabbing starts 1-2 days after treatment and returns to normal in about 7 days. Ice packs after surgery can reduce the erythema, epidermal growth factor can accelerate healing, and antibiotic cream can effectively avoid infection. To prevent infection, swimming, shower, sauna, etc. are not allowed until the scabs fall off after surgery, and sunlight is avoided. After the scabs fall off, it is recommended to use a sunscreen with SPF 30 or above. Do not artificially pick at the scabs with your hands to remove them. Use some skin repair medication for 2-4 weeks during the recovery period. Strict sun protection is needed after surgery, otherwise there is a risk of hyperpigmentation.