Popular sunscreen claims graded against the actual evidence.
This page has no affiliate links. We link to regulators, published studies, and our own reviews. TL;DR: Are Korean sunscreens safe? Korean sunscreens use UV filters that are approved and monitored in Korea and the EU but not yet cleared by the US FDA. “Not FDA-approved” does not mean “proven dangerous.” It means the FDA…
Is sunscreen bad for you? In 2026 that stopped being a fringe question. The American Academy of Dermatology’s Practice Safe Sun survey (1,132 U.S. adults, polled online in early 2026) reported “more than 16 million adults reporting reducing or stopping sunscreen use because of online claims,” a figure the AAD estimated from a national survey.[6]…
Type “homemade sunscreen” into Google and the autocomplete finishes the sentence for you: recipe, with zinc oxide, for face. Most recipes come with a number attached, SPF 20 here, SPF 30 there. What is harder to find is anyone who made one and put it under a lab instrument. A few research groups have, and…
Search “sunscreen pills” and two completely different conversations come back. One is about sunscreen pilling, the little balls that roll up when sunscreen meets the wrong moisturizer. That one is a texture problem, and we handled it separately in why sunscreen pills up on oily skin. This article is about the other one: capsules you…
Almost every anti-aging article repeats the same statistic: 80% of visible facial aging comes from the sun. Very few of them link the study. So does sunscreen prevent aging, and how much of what you have read about it matches the papers underneath? We went to the primary sources and read them directly: the one…
An anti-pollution Korean sunscreen carries two claims on the same tube, and they come from different worlds. Dewytree’s Urban Shade Anti-Pollution Sun is labeled SPF 50+ PA++++, and its listing separately advertises “39.1% Reduction in fine dust adherence verified by the Skin Med Clinical Trials Center. (2021.03.17)”[5] Both numbers are printed with the same confidence….
“Sunscreen causes cancer” trended on social media again this summer. Does sunscreen cause cancer? The claim has two legs, and both rest on things that actually happened. Sunscreen filters really are absorbed into the bloodstream; regulators confirmed it. Skin cancer rates really did climb through decades of rising sunscreen use; cancer registries record it. What…
Three days at the beach. Sunscreen on before breakfast, reapplied like a chore you actually did, and the strap mark on your shoulder says the tan happened anyway. The internet splits into two camps about this, and both camps are wrong. One says the bottle failed you. The other says a tan you picked up…
Affiliate links below, but they cost you nothing extra. We only point you to what the ingredient lists actually back up. Almost every alcohol-free Korean sunscreen recommendation you’ll read, including the ones on this site, traces back to the same place: a small grey tag on an ingredient database. So we went and checked how…
Two sunscreens, one over the other. SPF 30 underneath, SPF 50 on top, and somewhere in the back of your head a small calculator reports SPF 80. That number isn’t real. The problem is that the usual correction, deciding layering is therefore pointless, isn’t real either. Both of those can be wrong at the same…