Dr. Nkem Ugonabo MD, MPH - Dermatologist on Instagram: "Blackheads and whiteheads (aka comedones) are early forms of acne caused by clogged pores — a mix of oil, dead skin, and debris trapped inside the follicle. ✨ Open comedones (blackheads): exposed to air → the oil darkens ✨ Closed comedones (whiteheads): sealed under the skin → small bumps Now, how do we treat them? 👇 Salicylic Acid (BHA): A pore-clearing exfoliant that dissolves excess oil and dead skin inside the pores — ideal for blackhe