Keep Your Family Protected From Sun Rays - Stop Worrying About When To Apply Sunscreen To Protect Your Family From The Sun! This Patch Does The Work For You. No Unexpected Sunburn, Just Fun In The Sun! Is Safe For All Ages. Safe, Effective And Chemical Free - Designed Specifically For You And Your Children. No Chemicals Or Other Ingredients Of Concern! Are Made With Dermatologically Safe Medical Grade Adhesive. They Have A Uv Sensitive Layer That Reacts To Sun Rays And Turns Purple When Exposed To Uv Rays. Waterproof To Stay On All Day. Kid-Friendly - Approved By Parents - End The Sunscreen Battles With Your Little Ones With This Fun Patch! Once The Turns Purple, It'S Time To Reapply. And What Kid Doesn'T Love A Fun, Color-Changing Sticker. Versatile - Perfect For Babies, Toddlers, Kids And Adults. Convenient, Small Package Ideal For Travel And On-The-Go. Easy To Store In Bags, Diaper Bags And First Aid Kits. Ideal For All Outdoor Activities Such As Beach, Park, Picnics, Hiking And More. Have Fun In The Sun Without Worry. How It Works - Darkens To Purple Depending On Uv Exposure. Apply Sunscreen To Your Skin And Patch As Usual. The Patch Will Clear As The Sunscreen Protects It From Uv Rays. The Patch Will Darken As The Sunscreen Wears Off. Once The Patch Turns Purple, It'S Time To Reapply Sunscreen.