Part 1: https://allaccess.drpimplepopper.com/videos/back-blackheads-from-heaven

Blackheads are something we are all familiar with, but did you know they are also called open comedones? Blackheads are usually caused by a pore that gets clogged with keratin (skin protein) and sebum (oil). Given the black color many believe these spots are clogged with dirt, but really it’s the exposure to air that oxidizes the clogged pore and turns it black. Don’t worry though, most blackheads can be extracted with a trusty comedone extractor!