Blog
What we learned building Raydrop
UV index, skin types, hydration: the three topics that shape Raydrop's reminders, sourced and explained simply.
The UV index, explained simply
The WHO scale, why 3 is the threshold that matters, and why the index shifts with the hour, the season, and latitude.
Skin types: how long until sunburn?
The Fitzpatrick scale, what SPF actually does, and why reapplying every 2 hours is still the rule.
Kids in the sun: sunscreen, water, and the right habits
Kids' skin, hydration before thirst hits, and Raydrop's crew mode for the whole family.