1. Health
You can opt-out at any time. Please refer to our privacy policy for contact information.



Updated June 11, 2009

Blackheads - Open Comedones


Photo © A.D.A.M.
Definition: A non-inflamed acne lesion characterized by an obvious dark brown to black plug at the surface of the pore. The dark coloring is not dirt, but rather a mixture of oil and dead skin cells that have oxidized (darkened) when exposed to air.
Also Known As: Open comedo.
Related Video
Learn the Boat Pose
Learn how to Strengthen and Tone your Triceps Muscles

©2014 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.