Blackheads show up when oil glands in your skin secrete too much sebum (a natural moisturizer) and clog your pores.
Exposure to air is what causes blackheads to darken as the contents oxidize (it’s not the presence of dirt).
Common Blackhead Causes:
- Hormone fluctuations
- Genetic predisposition
- Skin and hair products
Oily sunscreens, hair greases, and cosmetics can promote “acne cosmetica.”
To prevent this condition, only use beauty products that are labeled “non-comedogenic” or “non-acnegenic