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Good reads. Sunny days.

Practical reads to help you choose, apply and understand sunscreen.

Filter chemistry 10 Dec 2025 Bemotrizinol Explained: The FDA's First New Filter Proposal in 25+ Years Read article →
Filter chemistry 09 Dec 2025 Why US SPF Makeup Feels Chalky - and How Bemotrizinol Could Fix It
Filter chemistry 08 Dec 2025 Closing the UVA Gap: What Bemotrizinol Means for US Sun Protection

Latest blog posts

Filter chemistry 07 Dec 2025 Bemotrizinol: The First New US Sunscreen Filter Proposed Since 1999 For 26 years the US filter list stood still while Europe and Asia raced ahead - this December 2025 proposal is the first real move to catch up. Read article →
Filter chemistry 06 Dec 2025 FDA Proposes Bemotrizinol: The First New US Sunscreen Filter Since the '90s A next-gen filter the rest of the world already uses just took its biggest step toward US shelves - and it reshapes the reef-safe debate too. Read article →
Global 05 Dec 2025 Recalled Twice in 2025: The Separated Kids' Zinc Sunscreen Parents Should Check A watery, separated sunscreen can quietly lose its SPF - here's the simple visual check before you slather zinc on your child. Read article →
Seasonal 04 Dec 2025 Sunscreen vs. Vitamin D: Do You Really Need to Burn for Your Bones? The 'but I need sun for vitamin D' line is the most common reason people skip protection - the evidence quietly takes it apart. Read article →
UV science 03 Dec 2025 Tanning Beds and Melanoma: The Hard Numbers Behind the Carcinogen Label Indoor tanning isn't a gray area - it sits in the same cancer-risk category as tobacco, and the numbers explain why. Read article →
Seasonal 02 Dec 2025 Does Smog Block UV? What a Hazy City Sky Really Does to Your Skin When the sky turns gray-brown with haze, it's tempting to think UV is taking the day off - the science says don't bet your skin on it. Read article →
UV science 01 Dec 2025 UV and Your Eyes: Why Sunglasses Need to Block 100% (Not Just Look Dark) You protect your skin from UV - but the part most people forget is sitting right behind those sunglasses. Read article →
Seasonal 30 Nov 2025 The Planet's Sunscreen: How the Recovering Ozone Layer Sets Your UV Index The UV number on your phone is shaped by a thin shield miles overhead - and that shield is one of the rare environmental stories getting better. Read article →
Application 29 Nov 2025 Reading the UV Index: The Exact Number That Means 'Put Sunscreen On' That little UV number in your weather app has a clear threshold - here's the reading where protection stops being optional. Read article →
UV science 28 Nov 2025 The Hidden Harm of UV: How Sunlight Quietly Disarms Your Immune System Beyond burns and wrinkles, UV does something most people never hear about - it temporarily switches off part of your skin's defenses. Read article →
Seasonal 27 Nov 2025 The UV Index You Can't See: Why Tanning Beds Beat the Midday Sun There's no weather-app number for the bed at the salon - and that's exactly why indoor tanning is so dangerous. Read article →
Application 26 Nov 2025 How to Reapply Sunscreen Over Makeup Without Wrecking Your Look The midday reapplication problem is why most people skip it, here's how to top up protection without ruining your makeup. Read article →
UV science 25 Nov 2025 How UV Light Ages Your Skin: The Science of Photoaging Daily sunscreen is the most evidence-based anti-aging step there is, and the science of photoaging explains exactly why. Read article →
Reef-safe 24 Nov 2025 2025's Antarctic Ozone Hole Was 5th Smallest Since 1992, But Recovery Is Decades Off The healing ozone layer is a genuine success story, but recovery is decades away and surface UV is still intense, here's why sunscreen still matters. Read article →
Seasonal 23 Nov 2025 UV Radiation and Skin Cancer: The Most Common Cancer in America Skin cancer is the most common cancer in the US, and the single biggest driver is something you can largely control. Read article →
Application 22 Nov 2025 Sunscreen Pills Don't Replace the Bottle: What the FDA Warnings Say 'Drink your sunscreen' supplements sound convenient, but the FDA has been clear that no pill protects your skin from UV. Read article →
UV science 21 Nov 2025 Does Blue Light Damage Skin? What the HEV Research Actually Shows Cutting through the 'blue light skincare' hype: here's what's actually evidenced about visible light and skin, and for whom it matters most. Read article →
Seasonal 20 Nov 2025 Snow Blindness Is Real: What Winter Photokeratitis Does and How to Prevent It Reflected UV off snow can give your eyes a painful sunburn, and it's the best argument there is for goggles on the slopes. Read article →
Application 19 Nov 2025 What 'Broad Spectrum' Really Means, and Why SPF Alone Won't Save You From UVA There's one word on the label that decides whether you're protected from the UVA rays that age skin and drive cancer. Read article →
Formulation 18 Nov 2025 Does Sunscreen Cause Vitamin D Deficiency? A 2025 Trial Adds Nuance to the Myth The 'sunscreen blocks vitamin D' claim is half-wrong and half-right, and a 2025 randomized trial shows exactly where the truth sits. Read article →
Skin cancer 17 Nov 2025 The Sun-D Trial: Does Daily SPF 50+ Really Raise Your Vitamin D Risk? The first large randomized trial to test the sunscreen-vitamin D claim is in, and the real-world answer is more nuanced than the headlines. Read article →