Safe time by skin type
Skin type
No sunscreen
SPF 30
SPF 50
Type I
Very fair, always burns
7m
40m
52m
Type II
Fair, usually burns
11m
1h
1h 18m
Type III
Medium, sometimes burns
22m
2h 1m
2h 36m
Type IV
Olive, rarely burns
34m
3h 6m
4h
Type V
Brown, very rarely burns
44m
4h 2m
5h 12m
Sea level, on land, UV held at 8. Sunscreen is counted the way most people apply it (about half the tested amount, roughly the square root of the SPF). Whatever the table says, reapply at least every 2 hours. Snow, sand and water reflect UV and shorten these times. Not medical advice.
What to do at UV 8
Avoid the midday sun. Shade, clothing, a hat, sunglasses and SPF 50 sunscreen; fair skin can burn in under 20 minutes.
Get a time for your skin, right now
Daisy reads the live UV where you are, follows how it changes through the day, and counts down your safe time for your skin type and sunscreen.
Open DaisyDaisy on your phone
Scan to open Daisy on your phone. The iPhone and Android apps, with a lock-screen countdown and a real alarm, are on their way.
Other UV levels