What it is
Open comedones — small, dark spots on the skin formed by oxidised sebum and dead skin cells in blocked pores — most common on the face, nose, and chin.
Emerging evidence
Blackheads
Open comedones — small, dark spots on the skin formed by oxidised sebum and dead skin cells in blocked pores — most common on the face, nose, and chin.
CategorySkin
Reviewed by Internal Medical Editorial Team · Editorial Health Review
26 March 2026
At a glance
Blackheads at a glance
Commonly experienced as
- Blackheads are among the most common skin concerns, and the desire to extract them is near-universal despite the risk of worsening inflammation. Many people develop complicated skincare routines trying to address them, sometimes creating more irritation than improvement. The condition often improves significantly during periods of lower stress and better sleep.
Evidence context
