Arm &amp; Hammer is famous for their baking soda so it’s no wonder that the whitening ingredient in Arm &amp; Hammer Truly Radiant is, you guessed it, baking soda. That’s not all, baking soda also helps fight bad breath, too. This is also one of the few types of mouthwash on our list that contains fluoride. You’ve likely been hearing about fluoride from your dentist your whole life but what’s included in this mouthwash is meant to protect your teeth from the acids produced by plaque buildup. It strengthens tooth enamel, too. While the baking soda gives this mouthwash a slightly salty taste, the tingling mint is much more prevalent. It’s not as harsh as a mouthwash with alcohol but it does have a bit of a kick to it. The 16 oz bottle is particularly easy to pour, too.