Are whitening toothpastes a bright idea?
Monday, July 4, 2011 - 05:30
in Psychology & Sociology
Studies show that whitening toothpastes mostly work by using abrasives to scrub off stains. Although this is effective, all that polishing has its dark side.Studies show that whitening toothpastes mostly work by using abrasives to scrub off stains. Although this is effective, all that polishing has its dark side.