SUNSCREEN in UV

SUNSCREEN in UV



How to Make Everything Video: https://youtu.be/lMXAY5F28L0
Veritasium Video: https://www.youtube.com/watch?v=V9K6gjR07Po

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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

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Resources and Further reading:

โ€œThe Food and Drug Administration (FDA) is proposing to limit the maximum labeled SPF value for over-the-counter (OTC) sunscreen drug products to โ€˜โ€˜50+.โ€™
https://www.gpo.gov/fdsys/pkg/FR-2011-06-17/pdf/2011-14769.pdf

NYT Article on SPF 50

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 FDAโ€™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

โ€SPF 100 vs 50 studyโ€
https://www.sciencedirect.com/science/article/pii/S0190962217329080

Screenshot of โ€œhealth blogโ€
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/

โ€œTitanium dioxide and zinc oxide provide UV protection primarily via absorption of UV radiation and not through significant reflection or scattering.โ€
https://onlinelibrary.wiley.com/doi/abs/10.1111/phpp.12214

From the FDAโ€™s website:
โ€œAlthough 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 bodyโ€
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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Comments (33)

  • Matthew Caylor Reply

    The biggest problem is that sunscreen only lasts so long and if I have to keep applying it over 6 hours I am going for a large container of cheaper lower spf sunscreen.

    January 23, 2019 at 3:15 pm
  • donthavetime4that Reply

    Makes white people skin look like their skin is dark skin like black people under UV. Basically, bc black people don't get sunburned with their melanin rich dark skin. The sun sees white people with sunscreen on look dark skin in the sun so the sun sees dark skin and doesn't burn them. So if sunscreen is melanin, then where does the melanin come from to make sunscreen if it's made of melanin? Unless it's a lab manufactured synthetic melanin. Hmmm! ๐Ÿค”

    January 23, 2019 at 3:15 pm
  • wig flown Reply

    I find it incredibly interesting that Hawaii is banning some organic UV absorbers to protect the coral reefs, but is not doing anything about climate change that is the main cause of coral bleeching :)))

    January 23, 2019 at 3:15 pm
  • Suzette Coronado Reply

    In Korea the multiply the spf number by 100 and then divide it by 60 and that is how long your dog should last

    January 23, 2019 at 3:15 pm
  • Jett wright Reply

    … I'm shook

    January 23, 2019 at 3:15 pm
  • black star Reply

    Such an informative video.also can you do another one showing how makeup with spf looks under uv

    January 23, 2019 at 3:15 pm
  • Vaping Asylum Reply

    "Devil horns"
    Clicks off video

    January 23, 2019 at 3:15 pm
  • Valentina Lopez Zanier Reply

    Did someone else notice that the sunscreen bottle looked purple in the uv light? Like it absorbs all that uv light so you shouldnโ€™t leave it in the sun? (Like the label tells you)

    January 23, 2019 at 3:15 pm
  • Natasya Emillia Reply

    Hi! Can i ask how long sunscreen will stay in your skin in uv camera? Cause I heard that we should re-apply our sunscreen but I donโ€™t really believe that. Thanks ๐Ÿ™

    January 23, 2019 at 3:15 pm
  • Ujjwal Singh Reply

    which is better, reflective ones or absorptive one?

    January 23, 2019 at 3:15 pm
  • Yi.En.Ou Reply

    The secret to sunscreen is to put it on every hour.

    January 23, 2019 at 3:15 pm
  • skyler and friends Reply

    Just have to stay inside until the evening lol.

    January 23, 2019 at 3:15 pm
  • Jeuel Sapad Reply

    Love your hair physics girl

    January 23, 2019 at 3:15 pm
  • virgy yoo Reply

    Indonesian subtitle please, too much hard words i dont understand

    January 23, 2019 at 3:15 pm
  • Varsha Scooby Reply

    Why canโ€™t white people minimise sunlight exposure and wear full sleeves๐Ÿคฆ๐Ÿฝโ€โ™€๏ธ and a hat ???

    January 23, 2019 at 3:15 pm
  • Peter Gaลกperan Reply

    Are we getting this kind of research NOW??? 10:19 Wow, science… I am not impressed.

    January 23, 2019 at 3:15 pm
  • Meli Reply

    Can you make a vido on how to choose sunscreens taking into account these factors?

    January 23, 2019 at 3:15 pm
  • Meli Reply

    This is very helpful! Thanks!

    January 23, 2019 at 3:15 pm
  • abc Reply

    Reminds me of that ad (from an Australian sunscreen brand)

    January 23, 2019 at 3:15 pm
  • tfcollect 26 Reply

    My sun screen is built In my skin. Called melanin.

    January 23, 2019 at 3:15 pm
  • Saddiki Fahd Reply

    Hi, does car glass a UV filter ???????????????!!?!?!?!?!?!?

    January 23, 2019 at 3:15 pm
  • Dragon born Reply

    So people have been getting away with blackface for decades now…..

    January 23, 2019 at 3:15 pm
  • ACEIS _ Reply

    So…as a "black" man…I was born with sunscreen…its called melanin, a dark brown to black pigment occurring in the hair, skin, and iris of the eye in all the people on the planet that look like me…I have NEVER worn sunscreen…I have NEVER experienced a SUNBURN? I don't know of ANYONE (in my entire family tree) that has EVER been diagnosed with skin cancer. Black Slaves worked in the HOT sun…from SUN up to SUN down…NOT ONE CASE OF SUNBURN!!!!!!! Science is beginning to tell some startling truths….

    January 23, 2019 at 3:15 pm
  • Drew Virtue Reply

    You know what those two are actually doing. You know..
    Shhh

    January 23, 2019 at 3:15 pm
  • Radu Reply

    What about reflective and absorbative as designations for the two types of sunscreen? Organic has already been repurposed in grocery stores and has other government regulation designations.

    January 23, 2019 at 3:15 pm
  • shawna mahoney Reply

    โ™ก
    Thank you
    So
    Helpful

    January 23, 2019 at 3:15 pm
  • infiniteuniversalthinking Reply

    I'm black and now want to wear sunscreen. WTF this has scared the life out of me.

    January 23, 2019 at 3:15 pm
  • Clientele Reply

    You are either paid or have no idea what you are talking about.

    January 23, 2019 at 3:15 pm
  • Adam Winkelman Reply

    I'm doing a study regarding reflection for a product I'm looking to bring to market for eyeglasses and I'm curious what Nanometer filter was used on your camera to show UV?

    January 23, 2019 at 3:15 pm
  • Rishav Bhowmik Reply

    F me.
    Just buy an umbrella.

    January 23, 2019 at 3:15 pm
  • MrJamhamm Reply

    People would also misunderstand that organic vs inorganic thing

    January 23, 2019 at 3:15 pm
  • TRY to HELP you Reply

    I'm a fan of covering the skin with clothing or umbrellas. I think sunscreen may be more cancer causing than those two things.

    January 23, 2019 at 3:15 pm
  • Quarter-Turn Reply

    I came back to rewatch this video. So well-produced. Thanks for the great content!

    January 23, 2019 at 3:15 pm

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