The Standard of Purity Fluoride Anticavity Toothpaste Lasts for Hours • Proven Whitening • Neutralizes Acid Naturally Powered by Baking Soda Neutralizes Plaque Acid Results You Can Feel Working Baking Soda Neutralizes Acid for Healthier Teeth & Gums Your teeth and gums thrive in a neutral, non-acidic environment. The proven power of baking soda in all ARM & HAMMER toothpastes actively neutralizes acid, helping create the optimal environment for strong teeth and gums. Use: Aids in the prevention of dental decay.