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



Updated May 29, 2007

Definition: The oil secretions of the sebaceous glands. Sebum lubricates the skin. It is the excess production of sebum that clogs pores and triggers an acne condition.
Also Known As: Oil
Related Video
Sleep Well During Pregnancy

©2014 About.com. All rights reserved.

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