DON’T GUESS YOUR SPF

Stuck one on my arm before a beach day and it was genuinely helpful—the two-tone shift from yellow to pink told me exactly when to reapply without any guesswork. The hydrocolloid base stayed put through swimming and sweat, which surprised me.

The color shift was way more obvious than I expected—the sticker went from pale to a deep purple after about 20 minutes on my arm. It’s been a game-changer for remembering to reapply when I’m gardening all afternoon, and the hydrocolloid base stayed put even when I was sweating.

I was skeptical about timing my beach days, but these stickers changed that completely. The hydrocolloid base stayed put through swimming and sweat, and the colour shift made it obvious when I needed to reapply. Such a simple concept that actually works.