Make sure the xylitol is finely ground and not coarse, grinding it in the blender or coffee grinder if necessary.
Mix all the ingredients by hand or with a blender until incorporated.
Store in a glass jar or squeeze tube and brush as usual.
NOTE: For easy blender clean-up, add a few drops of soap to the blender and then fill one-third full with warm water. Put the lid on tightly and blend on high. Dump out the suds and rinse well. Storage and Shelf Life: Keep away from very warm areas and don't allow water to get in the toothpaste jar. For longer shelf life use a clean popsicle stick or other utensil instead of dipping the toothbrush directly into the jar.