Buy Charcoal Toothbrush
yeah watched some of the videos on youtube for naturally whitenning theeth some of the lols said baking soda do that i tried its very harmfull and damaged the mouth skin but found charcoal is the best incredient
Its harmful for daily use but you can use twice a week..
Note: Use at your own risk if you have sensitive teeth or skin ;)
Interesting to learn about charcoal. We actually have some charcoal tooth past already but haven't used it much. Perhaps it's time to give it a try!