This treatment has been described as effective by numerous people. The classic teeth whitening does not work on all teeth, especially if they are grey. It will be more effective to yellowish teeth.
There are many teeth whitening products are available nowadays, and some of them contain small quantities of Carbamide Peroxide and small particles that whiten the teeth.
1 Mix a little bit baking soda with your regular toothpaste.
2. Take a piece of aluminum foil as wide and long as your teeth.
3. Apply the paste in to the foil and then cover your teeth with this.
4. Let the foil on your teeth for an hour.
Only after several days you will notice the first result.
According to the dentists, this teeth whitening treatment is completely safe. However take care and avoid repeating this treatment too often.