Safe time by skin type
Skin type
No sunscreen
SPF 30
SPF 50
Type I
Very fair, always burns
5m
27m
35m
Type II
Fair, usually burns
7m
40m
52m
Type III
Medium, sometimes burns
15m
1h 21m
1h 44m
Type IV
Olive, rarely burns
23m
2h 4m
2h 40m
Type V
Brown, very rarely burns
29m
2h 41m
3h 28m
Sea level, on land, UV held at 12. 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 12
Avoid being outside during midday hours. Unprotected skin can burn within minutes; take every precaution.
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