Blackheads (comedones) close-up
   
Blackheads (comedones) close-up

Blackheads, or open comedones, are common in acne. Clogged hair follicles reflect light irregularly to produce this black hue.


Review Date: 11/14/2012
Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.
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