How to Treat Closed Comedones (a.k.a. Annoying Whiteheads)
Like most types of acne, closed comedones form when excess oil and dead skin cells plug one of your hair follicles (a.k.a.
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Blackheads Vs. Whiteheads: Is There Really A Difference?
Blackheads are categorized open comedones because they occur when a clogged up pore has an opening at the surface of the skin ...