Carbamide peroxide whitening gel at 16% for supervised at-home use. Potassium nitrate and sodium fluoride as desensitizing agents. Neutral pH Excellent viscosity Benefits Double Desensitizing Action: Neural action of potassium nitrate and occlusive sodium fluoride. Potassium nitrate is an effective agent in the treatment of hyperesthetic dentin. Its action is based on the fact that the increased concentration of extracellular potassium depolarizes the membranes of nerve fibers, blocking the passage of the stimulus, reducing hypersensitivity. Excellent viscosity: Does not run off the tray. High Yield: Each syringe of 3g yields up to 9 applications. Recomended wearing time: - 16%: 3 to 4 hours