SPF Doesnt Mean What You Think It Means

SPF seems pretty simple. Find a high number, rub some on your nose, and you re ready for some sunshine. Unfortunately the science behind it is a little more complicated. Hosted by: Michael Aranda SciShow has a spinoff podcast It s called SciShow Tangents. Check it out at Support SciShow by becoming a patron on Patreon: Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Adam Brainard, Greg, Alex Hackman, 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: Twitter: Tumblr: Instagram: Sources: