Whiten your teeth, on the go with our new Linhart Whitening Pen with 35% CP. Effective, easy to use, and does not cause sensitivity. Simple to use, effective, and non-sensitive! Ingredients: 35% Carbamide Peroxide: Glycerin, Urea Peroxide, Propylene Glycol, Xylitol, Carbomer, Mentha Piperita Oil, Triethanolamine, Aqua