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Baking soda (sodium bicarbonate) with Lemon can be successfully used to remove stains and discolorations from the surface (enamel) of teeth, thereby given teeth a whiter and brighter appearance. Brushing your teeth with baking soda removes stains caused by drinking tea, coffee, and sodas as well as chewing tobacco and smoking. Mixing baking soda and water releases free radicals from the mixture. These free radicals break down the stain molecules on the enamel, which can then be scraped off the teeth using a toothbrush.


Although baking soda is a natural teeth whitener, there are some negative side effects to brushing with it regularly.

  • A major disadvantage of baking soda is that it is slightly abrasive to the teeth’s enamel, and if used repeatedly over time it can weaken the enamel. The erosion of the enamel can make the teeth more sensitive and more vulnerable to dental cavities. This type of damage is irreversible and can worsen over time.
  • Another disadvantage is the fact that baking soda doesn’t kill bacteria, to prevent cavities you have to brush your teeth with toothpaste after brushing with baking soda.
  • Finally, if you have braces or permanent retainers you should not brush with baking soda, because baking soda can cause them to fall out and leave darker spots due to reactions with the baking soda.

It is important to note that on its own, swallowing baking soda will not have deleterious effects on your health.