Sunscreen Ranker journal
The sunscreen
journal.
Daily, evidence-led notes on SPF, UV filters, and sun protection — every claim sourced.
- Application How Often Do You REALLY Need to Reapply? The two-hour rule, with the nuance for desk workers and beachgoers. Read article →
- UV science How Free Radicals From UV Actually Damage Your Skin The molecular story behind sunburn and photoaging. Read article →
- Skin cancer Melanoma by the Numbers: 2026 Projections 234,680 new cases this year — here's what the data actually says. Read article →
- Trends Tanning Is Trending Again — Here's What's at Stake 'Tanmaxxing' is back on your feed, but the risk math hasn't changed. Read article →
- Global K-Beauty Sunscreen Culture: Why Korea Treats SPF Like a Lifestyle Daily reapplication, cushion compacts, and PA ratings as the norm. Read article →
- Filter chemistry Tinosorb M: The Filter That Both Absorbs and Reflects A hybrid filter that breaks the chemical-vs-mineral binary. Read article →
- Sensitive skin Mineral vs Chemical Sunscreen for Sensitive Skin Which is actually gentler — and the nuance everyone skips. Read article →
- UV science Does UV Come Through Your Car Windshield? (Tested) Your commute may be quietly aging one side of your face. Read article →
- Formulation Why Mineral Sunscreens Leave a White Cast (Real Science) It's particle size and visible light doing it, not your technique. Read article →
- Application The Teaspoon Rule for Your Whole Body One ounce, about a shot glass — and almost nobody uses that much. Read article →
- Global What the FDA Actually Requires to Approve a Sunscreen Filter Why 'it's safe in Europe' isn't enough for US approval. Read article →
- Trends DIY Sunscreen Is Dangerous — Here's the Chemistry Why That viral 'natural sunscreen' recipe offers basically zero protection. Read article →
- Skin cancer Does Sunscreen Really Prevent Skin Cancer? The Landmark Trial The Nambour study that changed dermatology, explained. Read article →
- Filter chemistry Uvinul A Plus and Uvinul T 150: The Quiet Overachievers Two German-engineered filters doing heavy lifting in global sunscreens. Read article →
- Sensitive skin Why Your Sunscreen Stings Your Eyes (and How to Stop It) It's usually not the filters — it's the formula migrating. Read article →
- UV science The Electromagnetic Spectrum, but Make It Skincare UVC, UVB, UVA, visible, infrared — what hits your skin and what doesn't. Read article →
- Global Europe vs America vs Asia: Who Makes the Best Sunscreen? A regulatory and formulation showdown. Read article →
- Seasonal February Sun Is Stronger Than You Think (Especially on Snow) Late-winter UV is climbing back up — don't get caught off guard. Read article →
- Filter chemistry The Complete Beginner's Guide to Next-Gen UV Filters Tinosorb, Uvinul, Mexoryl — decoded once and for all. Read article →
- Trends January's Skincare Trend Report: What's Worth It, What's Noise Cutting through the new-year skincare hype with science. Read article →
- Global Why You Can't Legally Buy That Viral Japanese Sunscreen in the US Importing that viral Japanese sunscreen is a gray area, and the reason is regulatory. Read article →
- Formulation What 'Photostable' Actually Means on a Sunscreen Label Not all filters survive the sun they're supposed to block. Read article →
- UV science Visible Light Is the Sun-Damage Factor Nobody Talks About Both your screen and the sun emit visible light, and it can darken skin. Read article →
- Seasonal Winter Lips Need SPF Too Your lip balm should be doing more than moisturizing. Read article →