Arm & Hammer Advanced Whitening Toothpaste 75ml with micropolishers is clinically proven to leave your teeth up to 3 shades whiter with twice daily brushing. Baking Soda toothpastes are More Effective in enhancing plaque removal from harder to reach areas than non-baking soda toothpastes. Specially formulated with Baking Soda, nature\'s clinically proven cleaner manufactured from Trona. A naturally occurring mineral formed from evaporated natural saltwater lakes in Green River, Wyoming, USA since 1867.