What it is: An advanced teeth whitening pen created in collaboration with Kendall Jenner.hat it does: This pen freshens your breath with its vanilla-mint flavor and helps instantly brighten teeth. How to use: Remove the cap and click the button at the end of the pen until the gel dispenses. Smile and brush a thin layer onto your teeth. Wait 30 seconds before closing your mouth and 10-30 minutes before eating or drinking. Apply up to twice per day for two weeks. Do not use in combination with coffee, tea or other substances that may impact the whitening effect. 0.1 oz. Paraben-free; sulfate-free; phthalate-free Not tested on animals Vegan Made in the USA of imported materials