UV filters, actives, ratings, and how the numbers are tested.
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. Let’s take a look at what the FDA actually did, why the US was behind, and what it means for what you put on your face. TL;DR: On June 9, 2026, the FDA added bemotrizinol (also called Tinosorb…