Everybody poops—around a pound a day, in fact—and everybody wants a clean butt. Good old TP has come a long way since the first commercial toilet paper was marketed 162 years ago, and you might be surprised at how much Research & Development goes into each roll. We recently talked to researchers at Proctor and Gamble about the secret sauce that helps Charmin keep your rear-end feeling fresh. And by secret sauce, we mean secret fake poo. Here’s the inside poop scoop. <br /><br />Learn more: pops.ci/PoopLab<br /><br />SUBSCRIBE! for more Popular Science on YouTube ►► http://pops.ci/yt-sub<br />--<br />Producer/Video by: Jason Lederman<br /><br />Writer/Narrator: Rachel Feltman<br /><br />Cameras:<br />Canon EOS C100 - https://amzn.to/2M6RVej<br />Canon EOS 5D Mark III - https://amzn.to/2WpqRuC<br /><br />Additional equipment:<br />Canon EF50mm Lens - https://amzn.to/2VZHdKY<br />Canon Zoom Lens EF24-105mm - https://amzn.to/2HALQ5F<br />Sachtler Ace XL Tripod System - https://amzn.to/30JxjMs<br />Sennheiser EW100ENG G3 Camera Wireless Mic Kit - https://amzn.to/30GRXN0<br />Litepanels Astra E 1x1 Daylight LED Panel - https://amzn.to/2K0ptIk<br />Lowepro Magnum 650 AW Shoulder Bag - https://amzn.to/2Wg8DMf<br />The North Face Base Camp Duffel - https://amzn.to/2wjQbUe<br /><br />Music: APM Music<br /><br />Media: Pond5, Wikimedia Commons<br /><br />Special Thanks: Charmin, The Procter & Gamble Company<br />--<br />GET MORE POPULAR SCIENCE<br /><br />https://www.popsci.com<br /><br />E-mail newsletter: http://pops.ci/enews<br /><br />Facebook: https://www.facebook.com/popsci<br /><br />Twitter: https://www.twitter.com/popsci<br /><br />Instagram: https://www.instagram.com/popsci<br /><br />Flipboard: https://flipboard.com/@PopularScience<br /><br />Podcasts: https://www.popsci.com/popular-science-podcasts<br /><br />#charmin #toiletpaper #research #fakepoop #poop #science #feclone #tp