A comedo is a clogged hair follicle (pore) in the skin. Keratin (skin debris) combines with oil to block the follicle. A comedo can be open (blackhead) or closed by skin (whitehead), and occur with or without acne.
Blackheads are caused by too much oil production of your sebaceous glands. This is why blackheads are generally seen on the oiliest parts of the face. Dead skin cells, sebum, and dirt can clog your pores. When sebum comes into contact with oxygen, it turns black.
Both blackheads and whiteheads, says Dr. Chwalek, occur “when a pore gets blocked with dead skin cells and oils.” The difference is that in the case of whiteheads the pore remains closed; whereas with blackheads, the pore is stretched open. … (That’s how blackheads earned their oh-so-pleasant name.)
Accumulation of dead skin cells, oil, dirt, and sebum in hair follicles in ear causes clogged pores resulting in blackheads. To treat blackhead in ear there are a few simple and quick home remedies that can help you get rid of blackheads in ear canal or behind the ear easily.
Squeezing and popping blackheads is a bad idea and not the correct way to remove blackheads. You can’t really pop a blackhead to remove it, because the oil is too tightly stuck in your skin and if you try anyway you will cause trauma to the skin around the blackhead leaving it red and irritated.