Reflection
Sand and especially water reflect UV, adding to the direct sun you already get.
The beach is the easiest place to get caught out: hours in the open, plus sand and water bouncing extra UV onto your skin. Suntic helps you enjoy it without the burn.

A day at the beach stacks up sun exposure fast. You are usually out for hours, there is little natural shade, and both sand and water reflect ultraviolet rays back up at you, so your real exposure is higher than the UV index number alone implies.
Sand and especially water reflect UV, adding to the direct sun you already get.
Beach days mean long, continuous time outdoors, often right through the midday peak.
After every swim or towel-dry, your protection drops.
A cool sea breeze makes strong UV feel deceptively mild.
Suntic shows the live UV index for your exact spot and an estimate of your safe-sun time, and reminds you to reapply sunscreen before it wears off, so you can check it at a glance without guessing.