It is made from the roots of a Middle Eastern tree called, araak. It tastes a bit like watercress and rolling the dampened end of the twig around your mouth can be quite therapeutic. Araak root is supposed to be chock full of vitamin C, trimethylamine and potassium.
I don't think that Natural Toothbrush will replace my new favorite toothpaste: Weleda Plant Gel ($5) (thanks for the tip Ann). It is rare to find a toothpaste that is entirely based on natural ingredients and actually does a great job in the dazzling smile dept. Worthy of singling out from the ingredients list is rhatannia. This is a South American shrub high in tannins and astringents and, hopefully, good for our aging gums.
Ingredients in Weleda Plant Gel Toothpaste
Glycerin, water, hydrated silica, chamomile, krameria triandra (rhatannia), commiphora myrrha, spearmint, peppermint, fennel, algin, alcohol, esculin and limonene.