These UV-detection stickers take the guesswork out of when to reapply, providing a visual cue to tell you it’s time. Must-have beauty scores under $25 Sophie Shaw/CNN Underscored ...

These color-changing detection stickers are game-changers for summer. ... Was so surprised at how well they stayed on even when in and out of water!" Another wrote, "These were so easy to use, ...

The SpotMyUV Detection Stickers from TikTok were put to the test by our editor. Here's how the color-changing stickers for sunscreen performed ...