UV filters, actives, ratings, and how the numbers are tested.
Turn over a mineral sunscreen and there’s a decent chance you’ll find it printed near the SPF number: non-nano. It looks like a grade somebody awarded in a lab. So here’s a strange fact. The bodies that actually wrote down what “nano” means in a cosmetic, the European Commission, Australia’s TGA and the US FDA,…
You flip a Korean sunscreen over, and the ingredient list reads like a chemistry exam. Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine. Diethylamino Hydroxybenzoyl Hexyl Benzoate. It looks intimidating, but almost all of it comes down to a short list of modern UV filters, most of which your US sunscreen is not even allowed to use. Here is a…
You already scan the SPF number. But right next to it sits something like PA++++, and most people have no idea what those little plus signs are counting. The plus signs are the other half of your sunscreen, and they cover a completely different problem than SPF does. SPF is about burning. PA is about…
Affiliate links below, but they cost you nothing extra. We only point you to what the labels and the science actually back up. You pick up a Korean sunscreen, flip it over, and there it is in tiny print: Water Resistant (40 minutes) or (80 minutes). Most people read that as a loose promise, like…
Pick up a Korean sunscreen, or scroll the reviews for one, and you’ll hit two words that sound like a health verdict: organic and inorganic. To an English speaker an “organic sunscreen” sounds natural, gentle, maybe even the kind of thing with a leaf on the box. The same split shows up in Korean as…
Dig through your bathroom drawer and you’ll probably find a sunscreen from a trip two summers ago, half used, with no obvious date on it. Is it still doing anything? Sunscreen expiration is real, and it matters more here than with the rest of your skincare, because a weak sunscreen doesn’t just underperform quietly, it…
SPF 50 sounds like it should crush SPF 30. The number is nearly double, so the protection must be too, right? Here’s the part the packaging never spells out: the real gap between them is tiny, and it’s almost certainly not the thing deciding how protected you actually are. So let’s do the honest version…
Bemotrizinol is the new sunscreen ingredient the US just added for the first time since the late 1990s. If you already use a Korean sunscreen, there is a good chance you have been wearing it for a while. Let’s take a look at what the FDA actually did, why the US was behind, and what…