How Blackheads Really Form — And Why Washing Doesn't Help

The most common misconception in skincare: blackheads form because of dirty skin. Wrong. Blackheads are the result of a biochemical process — and understanding it means you can interrupt it deliberately.

What Is a Blackhead, Exactly?

A blackhead (open comedone) forms when a pore becomes clogged with a mixture of sebum, dead skin cells, and bacterial residue. The dark colour doesn't come from dirt — it comes from oxidation: when the sebum plug is exposed to oxygen, the melanin oxidises and turns black.

The 4 Biochemical Causes

• 1 Excess sebum production (seborrhoea) — Triggered by hormones (androgens), stress (cortisol), and diet (sugar, dairy). More sebum = more material for congestion.
• 2 Slowed cell turnover — Dead skin cells are not shed quickly enough and mix with sebum inside the pore.
• 3 Weakened skin barrier — A damaged barrier increases inflammatory response — pores react with increased sebum production as a protective mechanism.
• 4 Oxidation at the pore opening — The sebum plug oxidises on contact with air — that is the black colour. Not dirt. Chemistry.

Why Washing and Squeezing Don't Work

Aggressive cleansing removes sebum from the surface — but simultaneously stimulates the sebaceous glands to overproduce as a compensatory response. Squeezing empties the pore short-term but leaves micro-inflammation that accelerates the next congestion.

The Right Solution: BHA + Niacinamide

The DERMAROOT BHA + Niacinamide Serum combines both actives precisely:

• ✓ Salicylic acid (BHA) — dissolves congestion in the pore, exfoliates from within, reduces existing blackheads from week 1.
• ✓ Niacinamide — regulates sebum production, reduces pore size, strengthens the barrier against new congestion.