<unk>  is a widely used method of treatment for acne vulgaris. A dermatologist or cosmetologist may extract blackheads (open<unk> nes) using gentle pressure around the pore opening, and whiteheads (closed<unk> nes) by incision with a large needle or a blade. If performed skillfully, this treatment may be beneficial to the patient. Possible negative effects of the procedure include incomplete<unk> , refilling, scarring and tissue damage. There are few articles describing the use of<unk>  in peer-reviewed dermatology journals. In one 1964 study of<unk>  of non-inflamed whiteheads on patients' foreheads (the only study of the procedure cited in a 2007 literature review), the procedure reduced the number of future inflamed lesions and the recurrence rate of<unk> nes, but worsened patients' inflamed cystic lesions.
Comedo extraction
Laser
Laser coagulation
Laser surgery
GreenLight Laser Therapy
Laser hair removal
East Asian blepharoplasty
Low-level laser therapy