There are many solutions to whiten your teeth from home that can be purchased from your dentist or over-the-counter. Bleaching solutions contain peroxide which actually bleaches the tooth enamel. These “whitening “products typically rely on carbamide peroxide as the bleaching agent usually available in different concentrations from 10% to 22%. Although many teeth whitening products have proven to lighten tooth color, only dentist-dispensed home-use 10% carbamide peroxide tray-applied gels carry the ADA Seal. If you encounter sensitivity during treatment, consult your dentist about the side effects of whitening treatment.