Sebum Plugs are a Mysterious Type of Pimple — Here’s How to Deal
I hate to be the one to introduce you to “sebum plugs,” but if I can’t un-hear it, neither can you. Unsure as to what it was myself, I asked some experts to explain, and it turns out you can take the term literally.
Basically, the sebaceous glands—which accompany every hair follicle on the body—create an oily liquid (sebum) that, when mixed with dead skin cells and bacteria, plugs the pore, says dermatologist Rachel Nazarian, MD. “Sebum plugs are essentially the foundation of our blackheads and whiteheads, and often even our painful cysts,” she says.
Source : Well+Good – Sebum Plugs are a Mysterious Type of Pimple — Here’s How to Deal By, Erin Bunch