A dual phase whitening oral care composition comprising a first phase comprising a bound peroxide in a substantially anhydrous carrier and a second phase comprising an abrasive and tartar control system in an orally acceptably carrier. Methods of whitening a tooth surface are also provided.一種雙相美白口腔保健組成物,其包括含實質上無水載劑內結合過氧化物的第一相及含一磨料和口腔可接受載劑內牙石控制系統的第二相。亦提供美白牙齒表面的方法。