The harmful chemicals, toxins, artificial colors and sweeteners in toothpaste are becoming more well known. Read labels carefully though...even products that claim they are natural have nasty ingredients.
The truth is making your own toothpaste, or tooth powder, is extremely easy, effective, and cheap.
I combine baking soda (aluminum free), arrowroot powder, sea salt, and essentials oils to create my own tooth powder. Essentials oils such as peppermint, spearmint, lavender, myrrh, and cinnamon are anti-inflammatory, antimicrobial, and antiseptic (among many other things).
Keep tooth powder in a glass jar by the sink. A years supply with cost about three dollars!