That stubborn blackhead may actually be a sebaceous filament. Fact checked by Isaac Winter Medically reviewed by Hadley King, MD If you've ever dealt with a blackhead so stubborn you couldn't get rid ...
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 ...
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