Latest Articles
UV Science
What Does SPF Actually Mean?
SPF numbers are everywhere — but most people misread them. Here's what SPF really measures, why SPF 50 isn't twice as good as SPF 25, and how to apply sunscreen correctly.
Medically reviewed
UV Science
UVA vs UVB: What's the Difference?
Not all UV radiation is the same. Understanding the difference between UVA and UVB is key to choosing the right protection for your skin and your activities.
Medically reviewed
Hiking
The Hiker's UV Safety Guide
Altitude, reflection, extended exposure — hiking presents unique UV challenges. A complete guide to staying protected on the trail.
Medically reviewed