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   Viss (viss@mastodon.social)'s status on Wednesday, 11-Sep-2024 04:58:47 JST Viss

   TIL: aerosolized sunblock makes VOC sensors go absolutely bonkers. I put sunblock on to go on the roof and hose off the panels (because its been raining ash?!) and just now noticed that it made the awair voc sensors spike. I guess its probably the propellant?

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     Viss (viss@mastodon.social)'s status on Wednesday, 11-Sep-2024 04:58:47 JST Viss

     in reply to

     its was the 50spf spray neutrogena stuff, btw. and yes, having as many tattoos as I do i basically have to lather up any time i want to go outside.

     feld likes this.
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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:05:21 JST feld

     in reply to
     @Viss best sunblock you can buy has to be imported from EU (illegally), that's what I use for my tattoos. You want the stuff with Tinosorb (there are some variations on this as it has improved over the years, but this stuff turns you into a UV mirror 😊). Go on eBay and you'll find people selling it, look for Avene SPF 50
     
     https://www.ebay.com/itm/235230667339
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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:07:32 JST feld

     in reply to

     • A More Honest Dystopia
     @h2onolan @Viss that's interesting, tattoos work by your immune system going nuts and pulling the ink into subdermal layers. I wonder if that is related to somehow changing the skin to prevent the factors that cause psoriasis?
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     A More Honest Dystopia (h2onolan@infosec.exchange)'s status on Wednesday, 11-Sep-2024 05:07:33 JST A More Honest Dystopia

     in reply to

     @Viss a weird thing i recently learned talking to a person affected by pretty severe psoriasis, they had bad rashes everywhere except where they were tattooed

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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:13:16 JST feld

     in reply to
     @Viss that's nothing special, has Avobenzone which is fairly typical
     
     The FDA has been sitting on approving Tinosorb for over 20 years. It's reef safe, unclear why they don't allow it. This stuff is magical and reflects all the UV off your skin. (You could sit next to someone and cause them to burn from the reflected UV, lol)
     
     The previous best option was Doc Martins of Maui, but they had to pull theirs off the market when it was discovered it also affects the reefs. It's been like 5 years and they still don't have a replacement available yet 😭
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     Viss (viss@mastodon.social)'s status on Wednesday, 11-Sep-2024 05:13:17 JST Viss

     in reply to

     • feld

     @feld have you ever seen this stuff? https://supergoop.com/products/unseen-sunscreen-body-spf-40

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     Viss (viss@mastodon.social)'s status on Wednesday, 11-Sep-2024 05:16:15 JST Viss

     in reply to

     • A More Honest Dystopia
     • feld

     @feld @h2onolan ive noticed that when i have any kind of even light allergic reaction to stuff, the thick black lines on some of my tattoos get raised and puffy. like if i get a mosquito bite near one or if something in a bottle of contiditoner (this is recent) just doesnt agree with my skin or something. its weird, like a physical indicator my body is annoyed with something

     feld likes this.
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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:20:43 JST feld

     in reply to

     • A More Honest Dystopia
     @Viss @h2onolan that is very interesting, I haven't heard this before but maybe my friends with tats just never connected the dots and told me
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     Viss (viss@mastodon.social)'s status on Wednesday, 11-Sep-2024 05:38:08 JST Viss

     in reply to

     • feld

     @feld supergoop is PA+++ rated, and the stuff you linked isnt - so im wondering what the differences are

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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:38:08 JST feld

     in reply to
     @Viss My understanding is that the PA system is for indicating it can deal with UVA as most sunblocks have only dealt with UVB.
     
     Based on those Supergoop ingredients it's using Homosalate at 5% concentration to get the PA+++ rating and the table in the link below it would be like SPF2 (yes, two) and start losing effect after 45 minutes.
     
     That's pretty terrible if you think about it. It's better than nothing but it's not helping very much with UVA. Blocking UVA seems to be a difficult problem.
     
     https://twindly.com/blog/sunscreen-cheat-sheet/
     
     
     Tinosorb is very photostable so it should last many hours in the sun with full protection.
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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:43:12 JST feld

     in reply to

     • feld
     @Viss looks like there's good data on this site if you want to dig in
     
     https://www.personal-care.basf.com/products-formulation/products/products-detail/TINOSORB-A2B/30478125
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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:45:44 JST feld

     in reply to

     • feld
     @Viss this seems like a simple overview too
     
     https://time.com/3924609/sunscreen-spf-uva-uvb/
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     Viss (viss@mastodon.social)'s status on Wednesday, 11-Sep-2024 05:55:35 JST Viss

     in reply to

     • feld

     @feld so that covers the chemicals used in the french sunblock, but doesnt say anything about the PA+++ rating, or how it compares at all to supergoop

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     feld (feld@friedcheese.us)'s status on Wednesday, 11-Sep-2024 05:55:35 JST feld

     in reply to
     @Viss I'm doing the comparison:
     
     Supergoop's only UVB blocking is the Homosalate 9%. Homosalate only covers smaller range of UVB with the best protection at 306nm. That's low, and we know it's not photostable and begins losing efficacy after 45 mins.
     
     Products with Tinosorb are significantly more effective.
     
     Look at the attached graph: HMS is Homosalate. It's the worst product on the market for UVB.