Blackheads (Open Comedones)

Blackheads are small, dark plugs that form in the openings of pores, medically known as open comedones. They are a mild, very common type of acne and appear most often on the nose, chin and forehead.

A blackhead forms when a pore becomes clogged with a mixture of excess oil and dead skin cells. Because the pore stays open at the surface, this plug is exposed to air; the dark colour is not trapped dirt but the result of the material oxidising and reacting with light. This distinguishes blackheads from whiteheads, which are closed comedones covered by a thin layer of skin. Contributing factors include higher oil production, sluggish shedding of surface cells, and pore-clogging products. Blackheads are sometimes confused with sebaceous filaments, which are a normal, finer feature of pores rather than blemishes.

Blackheads can usually be reduced and managed, though pores prone to them often need ongoing care.

• Salicylic acid, a beta hydroxy acid that penetrates oil and helps clear the pore lining, is a widely used ingredient for this concern.
• Regular gentle exfoliation and non-comedogenic products help limit new clogging.
• Forceful squeezing can inflame the skin and cause marks, so aggressive extraction at home is generally discouraged.

Improvement is gradual and maintenance-based. Widespread, persistent or inflamed acne beyond simple blackheads warrants advice from a dermatologist for tailored treatment.