Magnetic nail markers that change color when UV rays hit dangerous levels — your personal early warning system.
Get Your First Pack Free Try the DemoSmart markers adhere instantly to any nail, lasting 1-2 weeks through showers, typing, and daily adventures. No glue needed.
Embedded particles shift from tropical blue to warning orange when your UV exposure hits dangerous levels. Instant visual feedback.
Choose from narwhals, palm trees, polar bears — themes that spark joy while protecting your skin. New designs quarterly.
You're playing beach volleyball, lost in the game. You glance at your hands during a timeout — your nail markers have shifted from tropical sky blue to warning orange. You've hit your UV limit. You immediately apply sunscreen, preventing the painful sunburn that would have ruined your weekend. Your friends notice the color change and ask where you got them. That's the NailRay moment — protection that's both beautiful and lifesaving.
Arctic adventure
Beach vibes
Ice explorer
Themed pack delivered quarterly
Limited artist collaborations