Warning: Very nerdy content ahead! If you’ve been following sunscreen discourse (apparently this is a thing now) you’ll know that mineral sunscreens mostly work by absorbing UV and only scattering a small amount, in the region of 4-5% across the range of UV. This was quantified in a pretty commonly cited 2016 paper by Curtis Cole, Thomas…
The “60% of products absorb into your bloodstream” myth (with video)
The myth that “60% of what’s applied to your skin is absorbed into your bloodstream” is one of my pet peeves. It’s so far from the truth, and it’s cited with such an air of authority that it really ticks me off. It also tends to be cited by the sorts of people who push…
Will Benzene in Sunscreens Give You Cancer? (with video)
In case you haven’t already heard, the 2021 edition of “This Anti-Cancer Product Is Giving You Cancer” is that there’s been benzene found in a bunch of sunscreens. How much should we be freaking out about this? I did an Instagram post on this already, but I thought I’d elaborate a bit more. The video…
Zinc Sunscreens Don’t Work Better: Every Myth Busted (with video)
There are so many myths around mineral or physical sunscreens – the ones with zinc oxide and titanium dioxide – and how they’re supposedly better than chemical sunscreens with scarier names like oxybenzone and octocrylene. And it’s usually zinc oxide that gets all the hype. Some of these advantages are true… but so many are…
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