Pimples become moles mainly due to pigmentation caused by black acne scars, which can be dealt with through medication, physical therapy, surgical excision and other ways. 1. Medication: For the case of pimples turning into moles, you can apply vitamin E cream, retinoic acid ointment and other medicines locally under the guidance of doctors, which can play the role of lightening the melanin to a certain extent, and thus can alleviate the symptoms to a certain extent. 2. Laser treatment: acne into a mole, you can choose carbon dioxide fractional laser, liquid freezing and other physical methods of treatment. Carbon dioxide fractional laser can pulverize the pigment particles, which can be discharged out of the body with metabolism. Liquid freezing relies on the low temperature energy of liquid nitrogen to remove melanin from the skin. 3. Surgical excision: If the acne becomes a mole that tends to get bigger, it needs to be excised through surgery in time, which can prevent malignant lesions. The situation of acne into moles, need to go to the regular hospital for relevant treatment and processing, to avoid damage to the skin.