For use with customized take-home whitening trays, Opalescence PF tooth whitening gel offers many options for patients. With its easy syringe delivery, Opalescence PF whitening gel is easily customized for each patient’s situation. The gel contains 20% water to prevent dehydration, and the sticky, viscous formula helps keep the gel and tray in place. With five concentrations and three flavors, patients can completely customize their whitening experience.