Acne Types: Comedonal, Inflammatory, Cystic, Hormonal

Acne is a spectrum, not a single condition. The type of lesion — blackhead, whitehead, papule, pustule, nodule, or cyst — determines which ingredients will actually move the needle. Treating cystic acne the same as comedonal acne is one of the most common mistakes in self-treating.

Non-inflammatory: comedonal acne

Blackheads (open comedones) and whiteheads (closed comedones) form when oil and dead skin cells block a pore. There is no bacterial inflammation — yet. Treatments that normalise cell turnover work best here.

• Retinoids — the gold standard for comedonal acne; they prevent the clogging at the root.
• Salicylic acid (BHA) — penetrates and clears existing clogs.
• Niacinamide — reduces sebum contributing to future clogs.
• Avoid heavy, occlusive, or comedogenic products.

Inflammatory: papules and pustules

When a clog ruptures and bacteria trigger the immune system, you get a red papule. If it fills with pus, it becomes a pustule. Inflammation is now part of the picture, and treatment needs to address it.

• Benzoyl peroxide — kills C. acnes bacteria; one of the best OTC options for inflammatory acne.
• Topical antibiotics (clindamycin) — prescription-only; often prescribed with benzoyl peroxide to prevent resistance.
• Azelaic acid — anti-inflammatory and anti-bacterial at 15–20% (prescription).
• Niacinamide — anti-inflammatory support.

Nodular and cystic acne

Nodules and cysts form deep in the dermis and are painful, slow to heal, and carry a high risk of scarring. OTC options are rarely sufficient. A dermatologist can offer oral treatments that are far more effective at this severity.

Hormonal acne

Hormonal acne is characterised by deep, painful, often cystic breakouts along the jawline, chin, and lower cheeks — driven by androgen fluctuations. It often worsens premenstrually. OTC treatments address it partially, but hormonal therapies (oral contraceptives, spironolactone) can be transformative for people who qualify.