SEE WHEN TO REAPPLY SUNSCREEN: SPOTMYUV is the world's first clinically proven PATENTED UV Detection Sticker that shows you if you are applying enough sunscreen and when to reapply | PATENTED DERMATRUE: EXCLUSIVE to SPOTMYUV UV Detection Stickers, our skin-mimicking technology absorbs sunscreen like your skin does. It wears off outdoors, swimming, or sweating, thanks to nanotechnology engineers from the University of Waterloo. Experience real-time sun protection visualization | CLINICALLY PROVEN: SPOTMYUV features a hypoallergenic, latex-free adhesive, dermatologist and pediatrician tested to help kids 3+ stay safe in the sun and help prevent sunburn | 1 STICKER A DAY: Each sticker lasts up to 12 hours. The color change will cycle ALL day with each sunscreen reapplication. You don't need to use another sticker each time you reapply | RECOMMENDED USE: Expose SPOT to outdoor UV light before applying sunscreen. If SPOT doesn't turn clear post-sunscreen application, SPF may be insufficient, expired, or not enough sunscreen has been applied. SPOTs work outdoors only and UV intensity impacts color change speed, so cloudy days may delay purple/clear transition