Patient: Black birthmark, hairy, slightly raised, not painful, grows with the face, the size of a small coin of a dime. Expert: Hello, from your description and photos, it can be diagnosed as “black hair mole”. It is recommended that you have surgery to remove it. The effect of laser on the treatment of nevus is not ideal. There are several surgical options: 1. If the lesion is small, it can be removed and sutured directly, leaving a linear scar, but the disadvantage is that the wound tension is higher, and the scar may become wider and longer in the future. 2.Split excision can be performed in 2 to 3 operations, each time removing a part of the lesion in a shuttle shape, which can reduce the scar to the shortest, the disadvantage is that the treatment period is longer, about half a year between each operation. 3, excision + local flap transfer, a one-time excision and transfer of surrounding tissue to repair the wound, less wound tension scar is not obvious, the disadvantage is that the surgical incision is long, “? shape.