Black closed mouth acne can be removed by using general treatment, physical therapy and life adjustment. 1. General treatment: Apply medication such as adapalene gel and all-trans-vitamin cream for relief. When the effect is not good, you can choose benzoyl peroxide and azelaic acid which have the effect of dissolving acne. You can also perform acne removal under aseptic conditions, using an acne squeezer to squeeze out the acne. 2. Physical therapy: For example, you can remove blackheads and minimize pores through fruit acid resurfacing and photorejuvenation, so as to achieve the effect of cleansing. 3. Life regulation: the formation of closed mouth and lifestyle also has a lot to do with, should pay attention to, usually do not eat too greasy food, regular routine, early to bed and early to rise, to avoid too much mental stress, usually go outdoors more often to do sports, keep the skin clean and hygienic, and choose the right skincare products. Whether it is a general treatment or photorejuvenation, fruit acid skin resurfacing need to go to a regular hospital, try not to use your hands to squeeze, may cause infection, but also cause the pores to increase, is not conducive to the back of the repair.