The Simple Guide to Understanding Your Acne acne · acne gene · acne treatment · acne types · blackheads · breakouts · comedones · inflamed acne · non-inflamed acne · skincare · Sep 06, 2026 by Cora Nelson There are really only two types of acne — and most people have never had them explained this simply. Here's what's actually happening in your skin, and why it matters for how you treat it.