Comedo extraction

Comedo extraction is a widely used method of treatment for acne vulgaris.^[1] A dermatologist or cosmetologist may extract blackheads (open comedones) using gentle pressure around the pore opening, and whiteheads (closed comedones) by incision with a large needle or a blade.^[2]

Comedo extraction
Specialty	Dermatology

If performed skillfully, this treatment may be beneficial to the patient.^[2] Possible negative effects of the procedure include incomplete extraction, refilling, scarring and tissue damage.^[2] There are few articles describing the use of comedo extraction in peer-reviewed dermatology journals.^{[1][needs update]} In one study in 1964 of extraction 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 comedones, but worsened patients' inflamed cystic lesions.^[3]