poladay and polanight both contain fluoride, which remineralizes the tooth surface to protect against tooth sensitivity. poladay and polanight’s unique, high water content formulation has a neutral pH and high viscosity to protect your gums during treatment. The tacky feel remains securely in place throughout the procedure. 7.5 % hydrogen peroxide in a new convenient 3 gram syringe, in a sealed dose pack. More gel in a single syringe reduces waste and this quantity is indicated for approximately 5 treatments. Custom trays are recommended, consult a dentist if you have any questions.