Sentry White 50 Syringe Pack 16% Carbamide Peroxide Teeth Whitening Gel

50 Syringe Pack 16% Carbamide Peroxide Teeth Whitening Gel. Sentry White Professional Teeth Whitener is a lightly mint flavored carbamide peroxide tooth whitening gel. Each syringe contains enough gel to complete six treatments (three for the upper arch and three for the lower arch). 1 to 2 hour treatments. Outstanding results. 50 Syringe Pack contains: 50 - 3 ml syringes with recappable dispenser tips and patient instructions.