22% Patient Kit - Take Home Teeth Whitening Gel. Patient Kit Contains: 4 - 3 ml syringes of 22% carbamide peroxide gel with dispensing tips, storage case, patient instructions, microfiber bag and the Nu Radiance reusable water bottle. Each 3 ml syringe is 5-6 complete treatments. Highly effective on persistent stains. Recommended for treating Tetracycline stains. High viscosity pleasant tasting gel.