I. Sunscreen To avoid the production of post-treatment hyperpigmentation, you must do a good job of sun protection: 1, external sunscreen sunscreen chosen after laser surgery: UVB sun protection index (SPF) > 30; UVA protection factor (PA) > +++. 2.Wear sun hat, cotton long-sleeved top and long pants, and sunshade, preferably UVB umbrella, etc. when going out. 3, avoid prolonged exposure to sunlight during the most intense time of the day, 10:00 am – 4:00 pm. Second, pay attention to diet After the end of laser treatment, you should avoid eating food containing copper, B vitamins and spicy food, eat more food rich in VitC, VitA such as fruits, vegetables, and food containing iron, zinc and other trace elements such as lean meat, fish, beans, cabbage, radish, etc., and pay attention to drink more water to enhance the repair of the skin. Three, wet compresses immediately after the laser treatment, cold wet compresses, or wet compresses mask on the skin, but the process must be gentle, to avoid friction skin. Four, the use of certain drugs available after surgery in accordance with medical advice will be gentamicin or erythromycin ointment and other thin external coating on the trauma, if the laser treatment area is large, inflammatory reaction, can be oral prednisone 10mg, 3 times a day for 3 days to strengthen the anti-inflammatory effect; can also be used alkaline fibroblast growth factor (BFGF) sprayed on the trauma, to promote healing. Fifth, the use of medical skin care products Because the laser has damaged the skin’s sebaceous membrane, stratum corneum and other structures to varying degrees, you should use medical skin care products containing moisturizing ingredients to help repair the damaged skin within 3-6 months after the end of treatment. Finally, we remind our beauty lovers that although the new laser currently applied has the advantages of high safety, less trauma, less bleeding and less pain, it will also damage the normal structure of the skin to varying degrees during the treatment process, and the redness and swelling of the skin after the procedure, and even blood oozing, infection and pigmentation are normal phenomena that will disappear with time, so don’t worry too much.