Want whiter teeth? Crest 3D Advanced Seal Whitestrips will do the trick in only a few short days. I have been using these little strips for years and they only keep getting better! I have extremely sensitive teeth and gums and these do not bother me in any way. I usually order mine online at Amazon.com for around $38.99, which is the best price I’ve found. Nothing shows your confidence more than a bright, white, friendly smile. Well, maybe a great pair of heels too!