Subscribe! http://bit.ly/ACSReactions It’s an inevitable side effect of longevity: your hair will turn gray. In this episode, Sophia Cai chats about the chemistry of your natural hair color, why it eventually turns white, and how scientists may be able to slow that graying down. If this episode leaves you wanting more, check out these great resources. First hair-graying gene identified http://cen.acs.org/articles/94/i10/First-hair-graying-gene-identified.html A genome-wide association scan in admixed Latin Americans identifies loci influencing facial and scalp hair features http://www.nature.com/ncomms/2016/160301/ncomms10815/full/ncomms10815.html Gray hair and vitiligo reversed at the root http://www.eurekalert.org/pub_releases/2013-05/foas-gha050313.php Post-Traumatic Tress Disorder http://www.fasebj.org/content/23/10/3253.full Everyday Mysteries: Why does hair turn gray? https://www.loc.gov/rr/scitech/mysteries/grayhair.html Why Does Hair Turn Gray? http://chemistry.about.com/od/howthingsworkfaqs/f/why-does-hair-turn-gray.htm The structure we show for the tyrosinase enzyme is a prediction. Researchers haven’t yet experimentally verified what it looks like. For more info, check out this paper from Enzyme Research: http://www.hindawi.com/journals/er/2012/192867/ And again, thanks to Gerald Weissman for talking to us for this video. http://www.med.nyu.edu/biosketch/weissg01 Want even more Speaking of Chemistry? Like us on Facebook: https://www.facebook.com/SpeakingOfChem And feel free to drop us a line at speakingofchem@acs.org Speaking of Chemistry is brought to you by Chemical & Engineering News, the news magazine of the American Chemical Society. Find us on all these places: Subscribe! http://bit.ly/ACSReactions Facebook! http://facebook.com/ACSReactions Twitter! http://twitter.com/ACSReactions Tumblr! http://tumblr.com/ACSReactions