That stubborn blackhead may actually be a sebaceous filament. Fact checked by Isaac Winter Medically reviewed by Hadley King, ...

Sebaceous filaments are structures that allow sebum to flow to the surface of the skin. Tiny glands beneath the skin create sebum, which is an oily substance that helps lubricate the skin. When the ...

Look closely at your nose or chin and you’ll probably notice tiny dots in your pores. Many people assume these are blackheads, but more often than not, they’re something else entirely: sebaceous ...

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