Safe time by skin type
Skin type
No sunscreen
SPF 30
SPF 50
Type I
Very fair, always burns
8m
46m
1h
Type II
Fair, usually burns
13m
1h 9m
1h 29m
Type III
Medium, sometimes burns
25m
2h 18m
2h 58m
Type IV
Olive, rarely burns
39m
3h 32m
4h 34m
Type V
Brown, very rarely burns
50m
4h 36m
5h 56m
Sea level, on land, UV held at 7. 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 7
Reduce time in the sun between 11:00 and 16:00. Shade, a hat, sunglasses and SPF 30+ sunscreen are essential.
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