Smarter UV protection for every outdoor adventure. Science-backed, medically reviewed, built for people who spend real time outdoors.
The research is out there. We bring it together, translate it into plain English, and always show you where it came from.
SPF 50 isn't twice as good as SPF 25. Here's what the numbers really tell you — and what they don't.
Read the guide →Two types of radiation, two different kinds of damage. Understanding both is key to real protection.
Read the guide →UV intensity increases significantly per 1,000 metres. Here's what that means for hikers and skiers.
Read the guide →SPF numbers are everywhere — but most people misread them. Here's what SPF really measures and how to apply sunscreen correctly.
Not all UV radiation is the same. Understanding both types is key to choosing the right protection.
Altitude, reflection, extended exposure — hiking presents unique UV challenges. A complete trail guide.