This dental tape has a unique stain-fighting ingredient that safely polishes away stains and is gentle enough to use every day. It is clinically proven to whiten between teeth (in controlled clinical testing), where tooth stains form most. In addition, this dental tape gives you extra cleaning surface for effective plaque removal. Dentists recommend regular flossing. Flossing has also been clinically proven to remove plaque between teeth to help prevent gum disease.