Blackhead (Open Comedone)

A blackhead, or open comedone, is a comedone whose follicular opening remains exposed to the skin surface and whose contents appear dark.

The dark appearance results primarily from changes involving the exposed follicular material, including oxidation and optical effects, rather than from trapped dirt.

Blackheads are non-inflammatory acne lesions, although inflammation can develop in an affected follicle.

QUICK FACT

The dark color of a blackhead does not mean the pore is filled with dirt.

COMMONLY CONFUSED WITH

  • Whitehead: a closed comedone whose opening is covered.
  • Dirt: external material on the skin.

SEE ALSO