1、UV DETECTION STICKERS: These UV stickers serve as a convenient way to detect your sunscreen by indicating whether you have applied enough sunscreen and when it's time to reapply, ensuring optimal UV proof throughout the day. 2、GENTLE ADHESIVE: Designed without latex adhesive, these SPF stickers are safe for children aged 3 and above to use in the sun, helping to prevent sunburn and promote sun safety during outdoor activities. 3、COLOR CHANGING INDICATOR: When exposed to UV rays, the stickers transition from transparent to purple, with the shade of purple changing based on the strength of UV exposure. As the color deepens, it signals a reminder to reapply sunscreen. 4、REUSABLE STICKERS: These UV detection stickers are reusable, allowing for continuous monitoring of sunscreen application. Each time you reapply sunscreen, the color changing feature lasts throughout the day, providing ongoing feedback on UV exposure. 5、EFFECTIVE UV INDOCATOR: With their innovative design and practical usage, these UV detection stickers are a reliable tool for enhancing sunproof awareness, making sunproof simple and straightforward for individuals of all ages. Item Type: UV Stickers Material: Paper Quantity: 120 Patches 120 x UV Detection Stickers