1、UV Sunscreen Monitoring: Stay informed on when to reapply sunscreen with our sunscreen detection stickers, which indicate if you have applied enough sunscreen and when it's time for a reapplication. 2、Gentle and Safe: Latex free, these sunscreen testing stickers are ideal for children aged 3 and above to stay safe in the sun and prevent sunburns. 3、Reusable Stickers: Each time you reapply sunscreen, the color changing feature of the stickers lasts throughout the day, allowing for continuous monitoring of sun protection. 4、Color Changing: The stickers transition from transparent to purple or yellow when exposed to UV rays, with color intensity changing based on UV strength. As the color darkens, it signals the need to reapply sunscreen. 5、Convenient Protection: Easy to use and effective, sunscreen patches provide a visual cue for sun protection, helping you and your family stay safe under the sun with timely sunscreen applications. Item Type: UV Detection Sticker Quantity: 240 pieces Shelf Life: 3 years 240 x UV Detection Stickers Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store