I looked up sunscreen recommendations on Consumer Reports and virtually every sunscreen didn’t perform as well as advertised in CR’s lab tests. CR’s top rated sunscreens all happen to be marketed for kids/babies oddly enough.
Comment on Why can't I apply SPF50 sunscreen twice to get SPF100 protection?
slazer2au@lemmy.world 4 weeks ago
SPF rating is subjective at best and not a regulated term in many countries.
Australia is a place where it is a regulated term and a test by Choice showed that 16 of 20 products failed their rating and several have since been recalled.
www.choice.com.au/…/sunscreen-test
Back to your original question which is answered in the article
In percentage figures that means the difference between, say, an SPF 50 sunscreen and an SPF 30 sunscreen is less impactful than you might assume. An SPF of 50 protects you from all but 1/50th of UV rays (98%), while sunscreen with an SPF of 30 protects you from all but 1/30th of UV rays (96.7%).
sheridan@lemmy.world 4 weeks ago
blarghly@lemmy.world 4 weeks ago
You get sunburned: “oh, silly me, I must have forgot to reapply”
Your baby gets sunburned and spends the next 72 hours crying: “I will murder the CEO of Johnson & Johnson”
lolrightythen@lemmy.world 4 weeks ago
Good writeup, yo
lemonhead2@lemmy.world 4 weeks ago
so if u do two spf 50 layers u should get spf 2500.
but in practice the second layer won’t be as thick…
Korhaka@sopuli.xyz 4 weeks ago
Depends how you apply it. I smear it on like butter.
communism@lemmy.ml 4 weeks ago
…How do you smear butter on your skin then?
Korhaka@sopuli.xyz 4 weeks ago
Like suncream
Alcoholicorn@mander.xyz 4 weeks ago
Careful of sunscreen stains. I apply 2 thin layers under air conditioning to minimize the moisture and allow it to fully dry.
SharkWeek@lemmy.blahaj.zone 4 weeks ago
Whereas I dip myself in a big tub of it, like a Mekon at dinner time
Dojan@pawb.social 4 weeks ago
This is the way to do it. You need a lot of it to get the full protection that it offers.
Maroon@lemmy.world 4 weeks ago
No way! So like I’d be be paying exponentially more for an additional 0.6% if I brought the SPF75!
Damn.
roguetrick@lemmy.world 4 weeks ago
Yeah but any power gamer loves this math because that 0.6% is still a nearly 30 percent damage reduction compared to the lower grade sun armor so you’ll be stomping those pubs that don’t persue it.
protist@retrofed.com 4 weeks ago
Does higher SPF cost more where you live? I just bought both 50 and 100 and they were the same price
JesusTheCarpenter@feddit.uk 4 weeks ago
Australia? Cause it seems that there SPF is just a marketing tactic.
protist@retrofed.com 4 weeks ago
Texas
slazer2au@lemmy.world 4 weeks ago
Yep. Welcome to capitalism, where the bigger made up number actually mean very little in real terms.
AmidFuror@fedia.io 4 weeks ago
Everyone knows that Societ sunscreen was the pinnacle of effectiveness and issued according to need.