Sunscreen Ranker journal
The sunscreen
journal.
Daily, evidence-led notes on SPF, UV filters, and sun protection — every claim sourced.
- Application Does SPF 100 Actually Do Anything? The diminishing-returns math, settled. Read article →
- Trends Gen Z Forgets Sunscreen More Than Any Generation — The Data 64% of Gen Z respondents admit they often skip sunscreen, so let's fix the friction. Read article →
- Filter chemistry Why Avobenzone Needs a Bodyguard Called Octocrylene The most common US UVA filter has a stability problem. Read article →
- Global What PA++++ Means on Your Asian Sunscreen Those plus signs are a UVA rating system the US doesn't use. Read article →
- Skin cancer The ABCDEs of Checking a Mole (Save This) A 30-second self-check can catch melanoma while it's still early and treatable. Read article →
- Sensitive skin The Best Sunscreen Texture for Oily, Acne-Prone Skin in Winter Cold weather forces a trade-off between hydration and breakouts, and the right texture settles it. Read article →
- UV science How Sunscreen Actually Works (Absorb vs Reflect) The chemical vs mineral mechanism, minus the fearmongering. Read article →
- Seasonal Snow Blindness Is a Real Sunburn — Of Your Eyes Photokeratitis ruins ski trips. Here's how to dodge it. Read article →
- Filter chemistry Mexoryl 400: The Filter Built for the UVA Rays Everyone Ignored Ultra-long UVA1 is the final frontier of photoprotection. Read article →
- Trends Is Sunscreen Actually Bad for You? A Calm, Sourced Answer The anti-sunscreen panic, addressed without the drama. Read article →
- Application The Two-Finger Rule, Demonstrated Exactly how much sunscreen goes on your face, measured. Read article →
- Global The 34 vs 16 Problem: A Filter Map of the World Europe has 34 approved UV filters. The US has 16. Here's the gap. Read article →
- Formulation Why Some Sunscreens Pill and Others Glide The formulation science behind that annoying eraser-crumb effect. Read article →
- UV science Why Clouds Are Not Sunscreen Overcast doesn't mean off-duty for your skin. Read article →
- Skin cancer 1 in 5 Americans Will Get Skin Cancer — Start the Year Knowing the Odds The stat that should reframe how you think about a $15 bottle. Read article →
- Seasonal Do You Need Sunscreen Indoors in Winter? (The Window Answer) Your desk-by-the-window setup has a UVA problem. Read article →
- Filter chemistry Meet Tinosorb S, the Filter the Rest of the World Has Loved for 20 Years Broad-spectrum, photostable, and finally US-bound. Read article →
- Trends Sunscreen Myths That Went Viral — Fact-Checked Your FYP lied to you. Let's clean it up. Read article →
- UV science What the UV Index Actually Means (and When to Care) That little number in your weather app is more useful than you think. Read article →
- Application You're Probably Using a Quarter of the Sunscreen You Need The uncomfortable truth behind why your SPF "isn't working." Read article →
- Global Why Your Korean Sunscreen Feels Like Water and Your American One Feels Like Paste It's not the brands; it's the filters they're legally allowed to use. Read article →
- Seasonal Skiing This Winter? Snow Is a UV Mirror Why slope days fry your face even when it's freezing. Read article →
- UV science UVA vs UVB, Explained Like You're Scrolling at 2AM The single most useful thing to understand about sun damage, in 60 seconds. Read article →
- Seasonal No, You Don't Get a Sunscreen Break Just Because It's January Winter sun is sneakier than summer sun, and here's the receipts. Read article →