Acne Symptoms
•Last Updated: January 27, 2020
Acne vulgaris is a common skin condition that occurs when sebum and dead skin clog hair follicles, forming comedones (a.k.a. pimples). A comedo unblocked by skin is a blackhead (black because of oxidized melanin, rather than dirt). A comedo blocked by skin is a whitehead.
Last Updated:January 27, 2020
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