The Supersmile Professional Whitening Gum is formulated with Supersmiles proprietary ingredient Calprox, which works by gently dissolving the protein pellicle – a thin layer of protein that forms on the tooth surface, to which plaque, bacteria, and stains adhere. Removing the protein pellicle leaves the teeth feeling cleaner for a longer period of time. Our Gum is sweetened with Xylitol, sugar-free and works to stabilise the pH balance of the mouth, counteracting acidity that leads to cavities.