How to whiten your teeth with no harm! by How to whiten your teeth with no harm! There's many ways to whiten your teeth and as using baking soda and lemon juice works, it also harms your teeth. Because of the acidic features of lemon juice, it will eventually take all the protection coating off of your teeth.So to prevent weakening your teeth, I have 2 DIFFERENT AND HARMLESS ways for you to try ! (:The first strategy is to take any non-Alcoholic mouthwash and mix it with Hydrogen Peroxide. Not a lot though, Only put about a cap full of Hydrogen Peroxide. The hydrogen Peroxide will cleanse your teeth of bacteria and germs while combining with the mouthwash and will cause your teeth to become whiterThe second strategy is to just simply use baking soda. When you brush your teeth, add baking soda on your toothbrush.Although it won't work right away, in about a week, you're teeth will be noticeably whiter!(: