Webjun 6, 2017 · in this video you can see a few cases of acne mainly manifested by closed comedones, so called whiteheads. Given the black color many believe these spots are clogged with dirt, but. Webclick here to subscribe to dr.

Webblackheads are usually caused by a pore that gets clogged with keratin (skin protein) and sebum (oil). Webjan 31, 2016 · click here to subscribe to dr.