|While we may not realize it, those tiny black dots on our noses, backs, in our ears and on our cheeks are blocked skin pores known as blackheads. Blackheads are dark in color because the tops of the skin pores are open to the air, so the top part of the hardened sebum or oil oxidizes, turning black (and where the term blackhead comes from).
Sebaceous glands tend to produce more oil than usual during puberty, and may be regulated to due specific hormonal changes, with some individuals continuing to experience blackheads into adulthood. Acne results when the oil gland is blockage by the blackhead and becomes infected.
Blackheads can be controlled through healthy skin regimens and the right treatments. Common health disorders like indigestion, constipation, under active thyroid and anemia may also cause blackheads.