- HDC is a home whitening Gel with 35% Carbamide Peroxide. - It contains Potassium Nitrate (KNO3) in order to reduce sensitivity. Benefits: - Immediate results. - Safe for enamel. - Reduces sensitivity. - Syringe-to-syringe mixing system for 100% fresh mix. - Immediate Activation. - Simpler application. - Provides effective gingival isolation. Box contains: - 4 syringes each 1.2 ml/syringe. **For further product information, please contact Chat Support**