Remarkably efficient__ccelerate patients' whitening with results in an hour or less. Three or four 15-minute treatments with 38% hydrogen peroxide gel Syringe-to-syringe mixing chemically activates the product, ensures a thorough mix and provides maximum freshness Contains potassium nitrate which helps decrease sensitivity associated with bleaching Follow in-office treatment with Venus White Pro custom take-home whitening or Venus White Ultra pre-filled, disposable whitening trays for best results Venus Comfort Gel is available separately and contains potassium nitrate and fluoride