Are Those Really Blackheads?

Do you just hate those little bumps all over your nose? Don’t be a hater, they’re just doing their job! Learn how in this SciShow Quick Question.
Hosted by: Hank Green
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Sources:
www.oxforddicti...
www.ncbi.nlm.ni...
www.ncbi.nlm.ni...
www.ncbi.nlm.n...
www.karger.com/...
www.huffingtonp...
Images:
Blackhead, whitehead, normal pore: commons.wikime...
Spots on Nose: commons.wikime...
sebaceous glands: commons.wikime...