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SUNSCREEN in UV

How to Make Everything Video: https://youtu.be/lMXAY5F28L0 Veritasium Video: https://www.youtube.com/watch?v=V9K6gjR07Po To learn more about CuriosityStream, go to http://curiositystream.com/physicsgirl Creator: Dianna Cowern Videography: Chris Peck, Dianna Cowern, Derek Muller and Eric Birkemeier Editing: Jabril Ashe Thanks to Dan Walsh, and congratulations on his PhD! Thanks to Kyle Kitzmiller and Unicorn Snot Subscribe to Physics Girl for more unusual phenomena and riddles. https://www.youtube.com/subscription_center?add_user=physicswoman Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Twitter: http://twitter.com/thephysicsgirl Facebook: http://facebook.com/thephysicsgirl Instagram: http://instagram.com/thephysicsgirl Resources and Further reading: “The Food and Drug Administration (FDA) is proposing to limit the maximum labeled SPF value for over-the-counter (OTC) sunscreen drug products to ‘‘50+.’ https://www.gpo.gov/fdsys/pkg/FR-2011-06-17/pdf/2011-14769.pdf NYT Article on SPF 50 https://www.nytimes.com/2011/06/15/science/15sun.html FDA: Understanding over the counter sunscreens https://www.fda.gov/drugs/resourcesforyou/consumers/buyingusingmedicinesafely/understandingover-the-countermedicines/ucm258468.htm Sunscreen Penetration of Human Skin and Related Keratinocyte Toxicity after Topical Application https://www.karger.com/Article/Abstract/85861 Regulatory Policy Information for the Sunscreen Innovation Act (information on FDA’s rejection of new sunscreen ingredients) https://www.fda.gov/Drugs/GuidanceComplianceRegulatoryInformation/ucm434843.htm https://www.ncbi.nlm.nih.gov/pubmed/15908756 NEW SIA (sunscreen innvation act): https://www.fda.gov/Drugs/GuidanceComplianceRegulatoryInformation/ucm434782.htm Schedule of sunscreen lettesr: https://www.fda.gov/Drugs/GuidanceComplianceRegulatoryInformation/ucm434843.htm FDA blog safety and effectiveness data: https://blogs.fda.gov/fdavoice/index.php/2016/11/fdas-sunscreen-guidance-outlines-safety-and-effectiveness-data-recommended-for-additional-active-ingredients/ Sunscreen + coral reefs https://www.washingtonpost.com/news/energy-environment/wp/2018/07/02/hawaii-is-about-to-ban-your-favorite-sunscreen-to-protect-its-coral-reefs/?noredirect=on&utm_term=.bba2187271ad ”SPF 100 vs 50 study” https://www.sciencedirect.com/science/article/pii/S0190962217329080 Screenshot of “health blog” https://www.huffingtonpost.com.au/2016/11/29/chemical-versus-physical-sunscreen-whats-the-difference_a_21616016/ Overview of suncreen ingredients https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3543289/ “Titanium dioxide and zinc oxide provide UV protection primarily via absorption of UV radiation and not through significant reflection or scattering.” https://onlinelibrary.wiley.com/doi/abs/10.1111/phpp.12214 From the FDA’s website: “Although the protective action of sunscreen products takes place on the surface of the skin, there is evidence that at least some sunscreen active ingredients may be absorbed through the skin and enter the body” https://www.fda.gov/Drugs/ResourcesForYou/Consumers/BuyingUsingMedicineSafely/UnderstandingOver-the-CounterMedicines/ucm239463.htm#ingredients In 2014, the FDA updated sunscreen ingredient proposal rules https://www.fda.gov/drugs/guidancecomplianceregulatoryinformation/ucm434782.htm


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