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What Makes Your Hair Curl?

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We all have really different looking locks but what actually make our hair straight or curly? Hosted by: Michael Aranda ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Jeremy Peng, Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Will and Sonja Marple, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Saul, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: http://www.popsci.com/science/article/2012-11/fyi-what-maks-hair-curly https://www.ncbi.nlm.nih.gov/pubmed/17919197 http://onlinelibrary.wiley.com/doi/10.1111/j.1365-4632.2007.03453.x/abstract http://www.telegraph.co.uk/news/science/science-news/6751910/Curly-hair-gene-discovered-by-scientists.html https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2775823/ http://www.nature.com/articles/ncomms10815 http://wonderopolis.org/wonder/how-does-heat-both-straighten-and-curl-hair https://www.scienceabc.com/innovation/what-is-the-science-behind-hair-straightenerscurlers.html http://www.smithsonianmag.com/science-nature/why-humidity-makes-your-hair-curl-21127724/ http://www.yalescientific.org/2010/04/everyday-qa-how-does-a-perm-work/ Images: https://commons.wikimedia.org/wiki/File%3AHierarchical_structure_of_hair_in_the_cortex_and_cuticle.png https://commons.wikimedia.org/wiki/File%3ACurling_iron_CISC-W2W32_by_Create_Co.%2C_Ltd._(2015-09-20).JPG

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