How does the Megawhite zero peroxide product work? The main whitening and cleansing ingredient in our exclusive formula is sodium bicarbonate. It goes deep into the pores of the teeth – called the dentin – and oxidises the molecules that make teeth appear yellow, dark and stained. The Megawhite gum shield is fi lled with the Megawhite product … Continue reading MEGAWHITES TEETH WHITENING