Active carbon is the only thing you need to whiten your teeth.
It may seem messy, and even disgusting, but this method has helped many people to whiten their teeth successfully. Charcoal is one of the most powerful gift of nature, and it has proven to be effective in the treatment of many health conditions ranging from dysentery to post-radiation effects.
It is obtained as a product of coal, which undergoes different procedures, including a steam chamber. It later opens and increases its surface, meaning it is able to attract more ingredients. Its use in cases of acute poisoning does not cause any side-effects.
How to whiten your teeth?
The method is super-simple. Crush some active carbon in a bowl, and using your toothbrush apply it on your teeth. You can find active carbon in every pharmacy. Brush for 3-4 minutes, same as you do regularly. Rinse well. You will see some results after the very first application.
Your teeth will be much whiter after a week of regular application.