Nevus of Ota is a blue pigmented change located on the lateral part of the face, usually distributed in the area of the trigeminal nerve, with different shades of color, but if you look closely, you will find many darker “dot” areas, which are mostly congenital, not itchy, not painful and not broken, but it has a serious impact on the appearance and makes self-esteem suffer. For this reason, many people suffering from nevus of Ota are most concerned about how to treat nevus of Ota. With the continuous development of medical technology, especially the development of laser technology, nevus of Ota is no longer a patient that doctors find difficult to deal with, and laser treatment of nevus of Ota will achieve very good results. 1. For shallow and light nevus of Ota, pink and clean tissues will be visible after the first laser treatment for nevus of Ota; while deeper nevus of Ota will produce some scabs, and black-red lesions will still be visible after the scabs are removed. After 15 days of laser treatment for nevus of Ota, pigmentation will gradually appear in the fresh tissues, and the pigmentation will be most obvious around 30 days, after which the pigmentation will gradually fade away, and most of them will fade away cleanly after 3 months, and the complete fading period will be more than 3 to 6 months; 2. The time for scab removal after laser treatment varies, some people can only remove the scabs after 10 days of treatment; it is forbidden to pick the scabs during the scab removal period, and the scabs should be removed naturally; 4. The fresh tissues after scab removal are most afraid of sunlight, so it is recommended to pay attention to shading and applying sunscreen when you go out, and you can also take VitC or use hydroquinone cream topically to prevent pigmentation. After laser treatment of nevus of Ota, the treatment interval will be 3 months, and the process of each subsequent laser treatment of nevus of Ota will be basically the same. As the number of laser treatment of nevus of Ota increases, the area of skin not cleared to completion will become smaller and smaller, and the treatment area will gradually shrink and the damage will be gradually reduced; 5. Since pigmentation will appear in the area of laser treatment of nevus of Ota after each laser treatment, when observing whether the nevus of Ota is cleared If the skin is clean after scab removal, laser treatment for nevus of Ota can be stopped, and the efficacy will be evaluated after 6 months (i.e. after pigmentation has completely disappeared). Although laser can effectively treat nevus of Ota, it is important to go to a regular cosmetic institution for consultation and treatment for safety and treatment effect.