Nite White™ is a fast, safe and effective tooth whitening System. The whitening gel is a thick solution, which is applied by the patient at home using a clear and inconspicuous custom fitted tray. The delicious Peppermint Cream flavored gel is worn overnight, while you sleep, for ultimate performance and maximum convenience. See Dr. Liu for your initial treatment and you will then be able to order your refills. 2 Pack.