The Future of Whitening Looks Bright - Brighten your smile with the first and only plastic-free teeth whitening system. How it works: 1. Dip your compostable applicator into the serum, dry teeth with a cloth 2. Paint a generous portion on each dry tooth 3. Smile for 2 minutes while it bubbles up 4. Spit out excess serum 5. Repeat twice a day, every day for 14 days ** FOR BEST RESULTS** Do not rinse the serum off and avoid eating or drinking for at least 30 minutes after application.