Three-month-old baby has a piece of skin on the face is darker than the rest of the face, considering the possibility of birthmarks, according to the specific performance and types of birthmarks, to take the general treatment, laser treatment and other methods to get rid of. 1. General treatment: If the color of the birthmark is light, and gradually fade with the baby’s growth and development, no special treatment can be done, only need to do a good job of daily care, to ensure the normal growth and development of the baby. 2. Laser treatment: if the subsequent deepening of the color of the birthmark, no sign of lightening of the color, should be under the guidance of the doctor for laser treatment to get rid of the birthmark. Found three-month-old baby face has a piece of skin deeper than the other places, can first be properly observed, if necessary, should go to the hospital for standardized diagnosis and treatment.