Use whitening toothpaste
The easiest and most common method is to use a whitening tooth paste two times a day. This method is inexpensive and to some extent, effective also. It is important that you look for a couple of things in the toothpaste you buy. First, it should contain the ingredient called Blue covarine and secondly, it should be approved by the local dental association.
Visit the dentist
If you do not want to do anything yourself, visit the dentist and get your teeth done. He will take about 30 minutes to do the scaling and your teeth will be as white as you like. This is one way in which you can get white teeth instantly. However, this process is extremely expensive as dentists charge high fees for the treatment.
Use baking soda
Baking soda is used to whiten teeth and remove any stains. You can mix baking soda is some water and apply the mixture to your teeth. Rub your teeth with the mixture and you will feel a clear difference. However, do not use this technique more than once in a week as it can be harmful.
Use lemon or orange
Another way would be to add a few droplets to a pinch of salt and apply that to your teeth. Rub that thoroughly to your teeth and make sure you apply the combination to all the teeth. This will whiten your teeth as lemon is a natural bleaching agent. You can also use orange peel on your teeth. You need to rub the inside of the orange peel to the affected areas.