Works with Extra Whitening Toothpaste  Formulated with 3X’s the Calprox®, a proprietary ingredient   Helps safely & effectively remove deep set stains & below the surface stains for outstanding whitening results  significantly improves gum health with continued use  Shown to whiten 2 shades after just one brushing  94% less abrasive than the limit set by the American Dental Association (ADA) 