Emma said: "Also known as open comedones, these are small bumps or papules that are filled with keratin. Keratin is another word for skin debris, and it combines with oils to block follicles.

Blackheads are open-faced. When the melanin pigment (found in the sebum produced by our oil glands) makes contact with the air at the top of an open comedone, it oxidizes and turns dark. This is ...

Lee showed off her comedone extractor's capabilities in this satisfying blackhead video: What's remarkable about these blackheads is the way they pop with just a little pressure: Advertisement ...

2. Whiteheads Whiteheads, aka closed comedones, are similar to blackheads except instead of being open to the air, the pore is closed off by a layer of skin, says McMahan. How to treat them: ...

• Dr. Sandra Lee, aka Dr. Pimple Popper, just posted a YouTube video called "Champagne Kisses, Comedone Dreams." • In it, she starts by popping blackheads—or open comedones—on a patient's ...