12 year old girls with blackheads can brush acid, physical removal, and daily maintenance. 1. Acid brushing: Acid brushing is a kind of chemical peeling of the skin, which can be applied to the skin using fruit acids, salicylic acid and other highly concentrated acids to accelerate the renewal and metabolism of the skin through controllable skin damage, but also has the effect of decreasing oil secretion, improving oily skin texture and removing blackheads. 2. Physical removal: blackheads can be physically squeezed and clamped to remove them. The operation should be carried out by professional medical personnel, the skin should be cleaned and the instruments should be thoroughly sterilized, otherwise it is easy to cause infection. 3. Daily maintenance: don’t eat too greasy food in your normal life, ensure a good and sufficient sleep time, reduce stress, will reduce the secretion of oil of the skin and relieve blackheads. If 12-year-old girls want to get rid of blackheads, it is recommended that parents bring to the regular hospital in a timely manner, under the guidance of a doctor to standardize the treatment, the drugs need to be used in accordance with medical advice.