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What does a blackhead consist of?

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A blackhead is a yellowish or blackish plug of material accumulated in the duct of a sebaceous gland. The material consists of keratin (horny cells of the epidermis) and modified sebum (oily secretions of the sebaceous gland).

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Similar questions: What materials accumulate in the sebaceous gland to form a blackhead? What is a blackhead? What causes a blackhead? [ Hide these questions ]

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