You've probably heard someone explain that hair grows in thicker after shaving, but is there any truth to this or is it just a myth? Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Greg, Alex Schuerch, Alex Hackman, Andrew Finley Brenan, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: pdfs.semanticscholar.org/820a/e49990f0f09b97487b6a437d304cc1cee47c.pdf onlinelibrary.wiley.com/doi/abs/10.1002/ar.1090370405 www.sciencedirect.com/science/article/pii/S0022202X15497003 core.ac.uk/download/pdf/82434481.pdf www.bmj.com/content/335/7633/1288.full www.jidonline.org/article/S0022-202X(15)47888-1/pdf www.sciencedirect.com/science/article/pii/S0927776502001297 www.sciencedirect.com/science/article/pii/S1011134404000375