Best Pimples Popping On Nose ( video )

Blackheads are a type of comedo. Comedones occur when the pores in the skin become plugged with dead skin cells and an oily, protective substance known as sebum.
Blackheads don’t mean your skin is dirty. Melanin, which is what gives skin its color, is found in sebum, too. When that melanin is exposed to air (what’s called oxidation) it turns dark, and that’s what gives blackheads their typical color.
Blackheads are also called “open comedones.” If you’re decided to talk to a dermatologist she may refer to blackheads by another name: a comedone. This is a small, flesh-colored, white, or dark bump that reaches the surface of the skin (they’re what make your skin feel rough and sandpaper-y).