I used 1/2 cup baking soda and 1/4 cup of salt. It seemed so plain so I tossed in some ground cinnamon (about 1/2 tsp.), but you could add some peppermint or spearmint essential oil for flavor instead (start with 2-4 drops and add more to taste- I'm going to buy some and add it). Cinnamon essential oil can be used instead of ground cinnamon, as well.

To use, wet your toothbrush and dip it in the toothpowder. If it tastes way too salty, add a bit more baking soda. Brush as usual and you will see how smooth and healthy your teeth feel!

In order to turn it into healthy homemade toothpaste, you can add several tablespoons of vegetable glycerin or liquified coconut oil. Add the liquid slowly and mix well until you get the consistency you desire. (Note that I haven't tried this because I like the toothpowder just fine).

Store your toothpowder or toothpaste in an airtight container in your bathroom. It lasts indefinitely.