The exercise dates again to about 3,000 yrs back in ancient India. It's really a natural method of dentistry known as "Ayurveda." Advocates of the natural approach to medicine believe that disorder arises from an imbalance (or stress) in your consciousness. Hydrogen peroxide can destroy microorganisms within the mouth https://thejillist.com/story6850208/detailed-notes-on-natural-medicine-for-whitening-teeth