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Over 80% of sunscreen performed below their labelled efficacy (2020)

(www.consumer.org.hk)
230 points mgh2 | 2 comments | 06 Sep 25 19:57 UTC | HN request time: 0.002s | source
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Insanity ◴[06 Sep 25 21:22 UTC] No.45152959[source]▶
Why does it not list the brands? The article is both informative and useless simultaneously
replies(1): >>45153021 #
mgh2 ◴[06 Sep 25 21:28 UTC] No.45153021[source]▶
Avoid (from other 3 articles/studies): Neutrogena, Banana Boat, Bondi Sands, Cancer Council, Aldi, Nivea, Estée Lauder, iPSA, Anessa, Shiseido, Curél, Sofina, Laneige, Dermacept, Bio-Essence, Fancl (Japan), Purito (Korea)

[1] https://news.ycombinator.com/item?id=45145624

[2] https://labmuffin.com/purito-sunscreen-and-all-about-spf-tes...

[3] https://www.abc.net.au/news/2025-07-04/questions-over-lab-th...

replies(7): >>45153085 #>>45153094 #>>45153355 #>>45153485 #>>45153680 #>>45153747 #>>45153897 #
willsmith72 ◴[06 Sep 25 21:37 UTC] No.45153094[source]▶
It's impossible, essentially every accessible brand has some products test way below advertised

On the other hand, if your product said it was 50 and it tested 30, the practical difference isn't actually that big. Our parents did ok with spf5

replies(2): >>45153164 #>>45153295 #
1. stevage ◴[06 Sep 25 22:05 UTC] No.45153295[source]▶
Don't know where your parents grew up or how ok they are. In Australia, many boomers have skin cancer, and that was before the hole in the ozone layer made things much worse.
replies(1): >>45153447 #
2. OneMorePerson ◴[06 Sep 25 22:23 UTC] No.45153447[source]▶
Did they actually apply sunscreen? Or is there a big divide between people who at least tried (something like SPF 15) vs those that just didn't wear any?