Although this product does whiten teeth, I found my teeth extremely sensitive to this tooth paste. It seemed to whiten me teeth too much, yes its possible, to the point it almost looked transparen't in some spots and then when ever i drank coffee or ate berries it would absorb the color and stain me tooth. I literally ended up with tinted blue colored teeth for several days after eating blueberries. This never happened to me before. I no longer trust any whiteners regardless of brand and just stick to regular tarter control toothpaste for sensitive teeth.