• Zetta@mander.xyz
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    3 hours ago

    The difference between SPF 60 and 100 is like 1.1% better UV blocking, anything over SPF 50 is in a practical sense nearly useless.

    For instance SPF 30 blocks 97% of UVB rays, is it worth paying more and slathering more potentially harmful (to the environment) compounds on your skin for 98% blocking? I think not.

    • Bongles@lemmy.zip
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      1 hour ago

      Seems like in real world use it makes a difference.

      https://www.sciencedirect.com/science/article/abs/pii/S0190962219327550

      https://pubmed.ncbi.nlm.nih.gov/29291958/

      From another thing I read, people have a tendency to not apply enough sunscreen or apply it correctly. I’m sure if everyone did it perfectly it wouldn’t matter. All I know is anecdotally, when I switched to 100 I stopped getting sunburns, and I have been in situations with people who used their own lower spf, got a little burned still, and I came out of it pale white.

      The price might be higher, but a quick look on Amazon and I’m seeing more than spf affecting that. The brand I buy is about 1.80 (usd) per ounce, and i see other brands with less spf for more. I see other brands with the same spf for less, and it seems like it’s between ~1.10 per ounce to ~2.80 per ounce so I’m not really bothered by my price. I don’t know anything about the environmental differences between spf so I won’t comment on that.

    • NιƙƙιDιɱҽʂ@lemmy.world
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      2 hours ago

      The average person should almost certainly not be using it, but maybe it would make the difference for extremely sun sensitive people.

    • pyre@lemmy.world
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      3 hours ago

      what if your skin has a hit point system and that 1% difference is the breaking point of sunburn