An acne tumor is a nodule-like change in the skin where the acne growth occurs, caused by the accumulation of sebum under the skin that cannot be excreted, and feels slightly wavy to the touch. The majority of acne tumors are fixed and do not move. If you want to remove them, it is recommended that you have them surgically removed by making a small epidermal incision and completely removing the cystic structure containing a large amount of sebum under the skin. The excised tissues need to be tested pathologically to determine the nature of the disease and to see if it has been removed cleanly. If necessary, you can choose to apply human-like collagen repair silicone gel to the wound area to prevent visible scars.