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:
http://www.oxforddictionaries.com/us/definition/american_english/comedo
http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0072395/
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1271924/
https://www.ncbi.nlm.nih.gov/pubmed/130839
http://www.karger.com/Article/Abstract/67820
http://www.huffingtonpost.com/2012/11/20/blackheads-get-rid-of-removal-nose_n_2166779.html

Images:
Blackhead, whitehead, normal pore: https://commons.wikimedia.org/wiki/File:Blausen_0811_SkinPores.png
Spots on Nose: https://commons.wikimedia.org/wiki/File:Blackheads.JPG
sebaceous glands: https://commons.wikimedia.org/wiki/File:Hair_follicle-en.svg