Pimple marks on forehead are the manifestation of inflammatory pigmentation left after acne healing, which can be improved by removing the causative factors, topical medication, laser treatment and so on. 1. Remove triggers: acne marks on forehead are mainly due to the development of acne, so it is necessary to treat acne disease, need to pay attention to facial cleanliness, maintain a light diet and regular life, reduce the incidence of acne. 2. Topical medication: patients can use topical retinoic acid cream, which can play a chemical peeling effect, promote the renewal of local epidermal cells, which is conducive to the further elimination of forehead acne marks. 3. Laser treatment: for forehead acne marks phenomenon, patients can also be treated by laser, the use of photothermal effect, the epidermal melanocyte burst, through the body’s metabolism out of the body. For forehead acne marks, should do a good job of sun protection, to avoid aggravation of pigmentation. It is recommended that patients who are willing to be treated go to a regular medical institution to avoid adverse consequences.