Opalescence PF 10% Teeth Whitening 4pk (Latest Product) by ULTRADENT<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Whiten your teeth the fast， safe and easy way </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Each syringe 1.2 ml with dispensing tip on each syringe </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Contains carbamide peroxide， potassium nitrate and fluoride </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Shelf life up to 18 months </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Reduce sensitivity with this new formula </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/21mIJthlbfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21-tgIGjh4L.jpg" noproxy>