To combat bad breath, canker sores, cavities, and even to whiten teeth, the one simple reflex to adopt is a baking soda mouthwash.
While baking soda is known for its multi-use properties that make it a natural household ally, baking soda – or sodium bicarbonate – is also excellent for oral hygiene. Here’s why and how to use baking soda for the health of your mouth.
For a natural mouthwash, I opt for baking soda
Thanks in part to its antacid properties, baking soda acts directly on the bad breath by reducing the acidity in the stomach. But that’s not all. It also plays a role in the acidity of the mouth, thereby reducing canker sores and other gingival irritations that can cause discomfort and pain.
Baking soda is also antibacterial: useful in an environment like the mouth where many bacteria mingle every day. The mouthwash will help eliminate impurities, including those that lodge between the teeth, and by doing so help prevent cavities and dental plaque. Gargling also relieves sore throats and the irritations they cause.
Generally speaking, it’s the whole mouth and tongue that benefit from the virtues of baking soda in mouthwash. The advantage is that it’s easy to use and inexpensive. Water with a pinch of salt – optional – and you’re good to go.
How to make a baking-soda mouthwash?
It’s simple: mix one teaspoon of the white powder in half a cup of water at room temperature. You can add a pinch of salt if you’d like – salt helps absorb toxins and bacteria and has a positive effect on fresh breath. The mouthwash should be used after brushing your teeth. Gargle for about ten seconds, then spit out or swallow the mixture. Rinse your mouth afterward to avoid a lingering salty taste that can be unpleasant.
You can do this gargle once a day as part of your daily oral hygiene routine. Or several times (four to five) if you have canker sores, irritated gums, or a sore throat. However, note: it should not substitute regular visits to the dentist. If you experience pain, whether occasional or persistent over time, consulting a specialist is essential.

In addition to the mouthwash, you can also brush your teeth with baking soda, once a week maximum. Baking soda’s abrasive properties can remove stains and tartar and make teeth whiter. To do this, apply the powder directly to a damp toothbrush, with or without toothpaste.


Two generous boxes of 500g of cosmetic baking soda, the finest and purest on the market.
You’ll love it and use it in a thousand and one ways for the hygiene and well-being of the whole family!
Available at Slow-Cosmetique.com
Ethan Hartwell
I break down everyday products to understand what they truly contain and what they imply. My goal is simple: make information clear and useful so people can make more responsible choices without complexity or unnecessary noise.