Please repeat the proportions of salt and soda for the tooth-brushing powder. I've used it for a long time but have misplaced the "recipe." Don't use a plastic blender container because it could be ...

If you’ve never heard of tooth powder, you’re not alone. This age-old product was the precursor to toothpaste, but it fell out of favor decades ago. Even though it’s hard to find on store shelves, ...