Bullet Points: 1.Sun Exposure Alert: These sunny patches for sunscreen warn you when you are getting too much sun and need to reapply sunscreen, just stick it on your skin and watch the color change. 2.Safe And Harmless: These sunny patch sunscreen detection patches help you monitor your sun exposure and apply sunscreen accordingly. They change color when exposed to UV rays, indicating the level of protection you need. 3.Refuse To Darken The Skin: Stay safe in the sun with these clever stickers that indicate the UV strength, and watch it change from purple to white when you need more protection. 4.General For Adults: These UV stickers for sunscreen are your smart sun companions. They detect UV intensity and are great for beaches, parks, picnics, hiking, and more. 5.Lightweight And Portable: These UV stickers let you know when to apply sunscreen and avoid sunburn. The sticker will indicate the UV level by changing color. These stickers are suitable for all skin shades. Description: UV Stickers For Sunscreen are a smart and fun way to monitor your sun exposure. These stickers change color with sunlight intensity, so you can see when you need more sunscreen. They are made of safe and non-irritating materials that protect your delicate skin from harmful UV rays. Features: Material: adhesive, color-changing pigment Diameter: 15mm/0.5in (10mm/0.3in for the discoloration part) Color development time: 5-15 seconds Color change: colorless-purple, colorless-yellow Color Indication: The stronger the UV intensity, the darker the color Storage method: UV intensity test stickers should be stored in dark and dry conditions. Packing List: 120pcs*UV Detecting Patches