Sunscreen Ranker journal
The sunscreen
journal.
Daily, evidence-led notes on SPF, UV filters, and sun protection — every claim sourced, no cap.
- Formulation Zinc Oxide vs. Titanium Dioxide: Which Mineral Filter Covers More Spectrum The two mineral filters aren't interchangeable — here's why zinc oxide covers more of the UVA spectrum and why so many formulas use both. Read it →
- UV science What SPF Actually Measures — and the Math Behind 15 vs 30 vs 50 SPF 100 isn't twice as protective as SPF 50 — here's the real math behind the number on the bottle. Read it →
- Formulation Beauty of Joseon Launches Its First 100% Mineral Tinted Sunscreen in 12 Shades A fully mineral tinted fluid in 12 shades that takes direct aim at the white-cast problem keeping skeptics on chemical filters. Read it →
- Kids & family What SPF Should Kids Use? Dermatologists Say SPF 30+ Broad-Spectrum One clear, authority-backed minimum for every child's sunscreen — no more guessing at the drugstore shelf. Read it →
- Global The EU's 2025 Sunscreen Compliance Calendar, Decoded Why your favorite European sunscreen quietly reformulated in 2025 — a plain-English timeline of the year's UV-filter deadlines. Read it →
- Makeup + SPF Is the SPF in Your Makeup Actually Enough Sun Protection? Your tinted moisturizer says SPF 30, but here's why dermatologists still want a real sunscreen underneath it. Read it →
- Skin cancer 5.4 Million Cases a Year: The Skin Cancer Number No One Talks About Nonmelanoma skin cancers dwarf melanoma in sheer numbers and are almost entirely caused by UV, so daily protection lowers your odds across the board. Read it →
- Reef-safe What Hawaii's Sunscreen Ban Actually Covers (It's Narrower Than You Think) Hawaii's famous ban covers only two ingredients, which is exactly why a Hawaii compliant label does not mean a product is reef-safe. Read it →
- Sensitive skin Sensitive-Skin SPF Goes to Trial: 2025 Studies Measure Barrier Repair Gentle and for sensitive skin are marketing terms until someone measures the barrier, and 2025 brought controlled trials doing exactly that. Read it →
- Seasonal A Three-Year Stretch Just Averaged Above 1.5°C: The New Sun-Exposure Baseline The 1.5°C line everyone talks about has effectively been crossed on a multi-year basis, normalizing the heat-and-sun extremes that make year-round UV protection sensible. Read it →
- Global Japan's Sun-Care Boom: How Daily High-PA SPF Became a Skincare Step In Japan, sunscreen is not a beach product but a daily skincare step, and the market data reveals the habit the rest of the world is now copying. Read it →
- Trends Why Sunscreen Lies Travel Faster Than the Truth on TikTok Knowing why anti-sunscreen videos go viral helps you spot the next one, so here is the playbook misinformation uses and how to fact-check your feed. Read it →
- Application Surfrider's 2025 Reef-Friendly Guide: 12 Sunscreen Ingredients to Skip Skip the marketing buzzwords and check the back of the bottle against the actual ingredient list a leading ocean nonprofit flagged in 2025. Read it →
- Skin cancer Skin Cancer Is Not Just a Fair-Skin Disease: Closing the Melanoma Gap Melanoma can be deadlier for people of color because it is caught late, which makes awareness and skin checks essential for everyone. Read it →
- Formulation Bemotrizinol: The First New US Sunscreen Filter in Decades You keep hearing bemotrizinol is finally coming to American shelves, so here is what it is, what it protects against, and why it took so long. Read it →
- Filter chemistry Bemotrizinol & Bisoctrizole: The EU Filters at the Heart of the 2025 US Debate These are the filters that make EU sunscreens feel weightless and protect deep into UVA, and 2025's modernization debate is about finally bringing them to the US. Read it →
- UV science UVA vs. UVB: What Each Ray Does to Your Skin and Why It Matters Once you know what UVA and UVB each do, you will understand why broad spectrum is the one word that actually matters in the sunscreen aisle. Read it →
- Application The January 2025 Badger Sunscreen Recall: A Missing Label, Not Benzene Not every sunscreen recall is about a scary chemical, and this one shows why the boring Drug Facts panel actually matters for using SPF correctly. Read it →
- Skin cancer Why Cancer Is Shifting Toward Women Under 50, Per the 2025 ACS Report If you are a young woman, the 2025 cancer data reframes sun protection as something that is relevant to you now, not decades from now. Read it →
- Skin cancer ACS 2025: 212,200 New Melanoma Cases Projected, a Record High The American Cancer Society projects more melanoma diagnoses than ever in 2025, a sobering reminder that one of the most preventable cancers keeps climbing. Read it →
- Kids & family PA Kids Can Now Carry and Use Sunscreen at School (No Nurse Visit) A plain-English guide for Pennsylvania parents on the new sunscreen rule, the permission form your child needs, and which products qualify. Read it →
- Formulation Supergoop! Bumped Unseen Sunscreen to SPF 50 — Real Upgrade or Refresh? When a cult-favorite SPF gets reformulated, what actually changes under the hood — and how do you tell a real upgrade from a marketing refresh? Read it →
- Application Supergoop! Beats SPF-Accuracy Lawsuit — What the Case Reveals About SPF Testing A lawsuit claimed a cult sunscreen tested at half its labeled SPF — here's why a judge tossed it twice and what SPF lab variability really means for you. Read it →
- Kids & family When Can Babies Wear Sunscreen? Why the Answer Is 6 Months Every new parent's panic question, answered — the real medical reasoning behind the 6-month rule and the narrow exception. Read it →