Everything you need to know about sun protection — from UV science to finding your perfect SPF. Interactive, evidence-based, and beautifully simple.
Click any level to see what it means for your skin and the protection you need.
Low
Minimal danger for the average person.
60+
minutes for fair skin
15
Wear sunglasses on bright days.
Answer 4 quick questions to discover your Fitzpatrick skin type and personalized sunscreen recommendations.
Adjust the sliders to get a personalized SPF recommendation based on your conditions.
Most people use only 25-50% of the recommended amount. Here's how to do it right.
Apply 1 oz (a shot glass full) to cover your entire body. For your face alone, use about half a teaspoon — roughly a nickel-sized dollop.
Chemical sunscreens need 15-20 minutes to absorb and activate. Mineral sunscreens work immediately upon application. Plan accordingly.
Every 2 hours, or immediately after swimming, sweating, or toweling off. No sunscreen — not even SPF 100 — is a set-it-and-forget-it solution.
Ears, back of neck, tops of feet, hairline, and backs of hands are commonly missed. UV damage doesn't skip the spots you forget.
Up to 80% of UV rays penetrate clouds. Even on overcast days, UV radiation reaches your skin. Apply sunscreen regardless of cloud cover.
Sunscreens expire — typically after 3 years. Expired sunscreen loses effectiveness. If there's no expiry date, write the purchase date on the bottle.
Tap to reveal the truth behind common misconceptions about sun protection.
Click an ingredient to learn how it protects you from the sun.