Remineralizing formula. Remineralizes & strengthens aging teeth to a younger look. As you get older, your teeth darken and your gums tend to recede. Your teeth also become susceptible to gumline cavities and the build-up of bacteria that can lead to gum disease and bad breath. Rembrandt Age Defying Whitening Fluoride Toothpaste is a new, antibacterial (germ-fighting), Remineralizing, low abrasive, non-acidic formula that combines fluoride and oral cleansing ingredients. Tests show regular use whitens teeth and helps stop adult tooth decay as it promotes healthy teeth and gums. Your mouth will look and feel years younger! Has been shown in scientific testing to effectively: help retard and prevent decay on roots of teeth and along gumlines; help clean between teeth where your toothbrush can't reach; whiten teeth 4 shades with peroxide and safely remove stains; remove plaque/bacteria build-up that can cause bad breath; remineralize and strengthen tooth enamel; help fight receding gums.