Whiter teeth in 7 days. Helps prevent tartar build-up. Refreshing clean taste. Strengthens teeth and fights cavities. The Baking Soda & Peroxide Reaction: In a dual chamber dispenser, baking soda & peroxide are kept safe. When you brush, the two sides react and release powerful oxygen bubbles. Bubbling action formula breaks down stains and leaves your teeth noticeably whiter.