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Natural Teeth Whitener - Dr. Oz Take 1/4 cup of baking soda and mix it with the juice of 1/2 lemon and then apply it to your teeth with a q-tip. Leave on your teeth for 1 minute then brush. This amount is more than enough for two people. I would actually reduce it to 2 TBSP baking soda with enough juice to make it a consistency to apply.
Dr Oz: Teeth Whitening Home Remedy: Baking Soda + Lemon Juice | 1. Squeeze the fresh lemon juice into the baking soda. The lemon juice and baking soda solution will bubble. Dip a cotton ball into the lemon juice and baking soda solution and apply it to your teeth. Let the lemon and baking soda solution sit on your teeth for around a minute, then brush to remove the mixture...