Reach a more radiant smile with these clinically tested teeth-whitening Philips Sonicare toothbrush heads. Notice results after just one week while experiencing an exceptional everyday clean. The diamond-shaped bristle area is designed to increase surface contact and clean away stains more effectively. The results speak for themselves with up to 100% more stain removal in less than two days. The W DiamondClean electric toothbrush heads are also very efficient when it comes to plaque removal: they use densely-packed bristles to remove up to 700% more plaque than a manual toothbrush.