- The diamond-shaped bristles of this Philips toothbrush head are designed to clean away stains for a more radiant smile- The densely-packed bristles remove up to 7 times more plaque than a manual one- With its dynamic fluid action, the brush gently removes build-up in sensitive areas, keeping your gums healthy- It works with your toothbrush's BrushSync reminder feature - the blue bristles also turn white when it's time to replace