There are numerous pastes for teeth whitening, and some of them contain small quantities of carbamide peroxide, and small abrasive particles that whiten the teeth.
However, why would you buy them when you can make your own natural paste for teeth whitening.
Procedure: Mix a little baking soda with toothpaste, take aluminum foil, and fold it so that it becomes wide and long as your teeth.
The resulting paste apply to the foil and place on the teeth. The foil with the paste hold 1 hour.
To see the quick results, repeat this procedure twice a day in the following 7 days