Comedone

A comedone is a blocked hair follicle caused by a buildup of sebum and dead skin cells.

Comedones are the earliest acne lesions and occur in two main forms:

Comedones form when follicular contents accumulate and the normal movement of material out of the follicle is disrupted.

They are usually not inflamed but may develop into larger inflammatory acne lesions.

QUICK FACT

A blackhead is not black because the follicle contains dirt.

SEE ALSO