When acne, or acne in medical terms, is about to fade, the number of facial papules and pustules decreases, the local lesions become smaller, the color turns darker, the inflammation decreases and is no longer accompanied by swelling and pain, and some pigmentation changes may remain. For deep-seated nodules and cysts, they also tend to gradually shrink and become less painful, all of which are precursors to the disappearance of acne. Also with increasing age, generally around 22-23 years old patients’ body hormone levels will stabilize and acne will grow less, which is also a precursor to improvement. When the acne starts to fade, avoid squeezing, especially the nose and its surrounding “danger triangle”, the consequences of infection are more serious, and pay attention to keep the face dry and clean to avoid re-infection. Usually, acne will disappear or stop growing excessively after the individual becomes an adult and sexually mature, if it leaves a pimple mark, it can be solved by medical aesthetic means such as acid brushing and laser, if it leaves a scar that is difficult to lift, it may require injection therapy.