The Learning Lab
Building a Sustainable Sunscreen Habit for Athletes
Sunscreen for Year-Round Athletes The athletes who stay outside year-round learn this fast: sunscreen is not a beach product. It is gear. The same people who obsess over hydration packs, recovery metrics, split times, wetsuits, tire pressure, and weather windows still forget one of the most consistent stressors on the...
Is Zinc Oxide Reef Safe? What the Science Actually Says
"Reef safe" is printed on thousands of sunscreen bottles, but it is not a regulated term — and not all reef-safe claims are equal. Here is what the peer-reviewed science, the EPA, the National Academies, and state legislators actually say about sunscreen and ocean health. Every time you swim in...
Is Mineral Sunscreen Safer Than Chemical Sunscreen?
The honest answer: based on current FDA guidance and published clinical research, mineral sunscreen — specifically zinc oxide — has a stronger safety profile than most chemical UV filters. Here is why, without the marketing spin. This is one of the most searched questions in skincare right now, and for...
What Does the FDA Say About Zinc Oxide in Sunscreen?
What Does the FDA Say About Zinc Oxide in Sunscreen? The short answer: zinc oxide is one of only two sunscreen ingredients the FDA has proposed classifying as "generally recognized as safe and effective." Every other common sunscreen active — including oxybenzone, avobenzone, and octinoxate — is still awaiting that...
Is zinc oxide sunscreen actually better than chemical sunscreen?
Zinc oxide sunscreen is often the better choice if you want broad, stable UV protection with a low risk of skin irritation. That’s not just marketing. It comes from how zinc oxide works on the skin and how it handles sunlight. Chemical sunscreens can still be effective, but they rely...
How Much Sunscreen Should You Use?
Most people should use: Face and neck: 2 finger-lengths of sunscreen Full body: 1 ounce (a shot glass) Reapply: every 2 hours Most people apply only 25–50% of this amount, which significantly reduces protection. How Much Sunscreen Should You Use on Your Face? Use the two-finger rule: Squeeze sunscreen along...
