SPOTMYUV UV Detection Stickers, 12 count"

Take the guesswork out of applying sunscreen with SPOTMYUV® UV Detection Stickers. When used under sunscreen, they turn purple when it's time to reapply. The SPOTMYUV stickers use Dermatrue™ technology which is sensitive to UV light, just like skin. A sticker lasts all day. Each package contains 32 latex-free stickers. SPOTMYUV UV Detection Stickers remind you when to reapply sunscreen
The clear stickers turn purple when sunscreen is no longer working
The sun protection stickers work with any sunscreen on any skin tone and are water resistant