Relax Every Day

enzoyl peroxide works by reducing swelling, which a key marker of inflammatory acne, which includes cysts and pustules. It can also get rid of underlying bacteria in a pimple.
However, blackheads aren’t considered inflammatory. Also, they are not caused by bacteria, so products featuring benzoyl peroxide won’t do much good.

When it comes to over-the-counter (OTC) acne spot treatments, you’re likely to find that many products contain benzoyl peroxide. The problem is, benzoyl peroxide doesn’t work for all types of acne.