Bleaching by a dentist

This is generally a two-step process.  Since the dentist and her/his assistant will work for about two hours, you can add up the cost.  It can be hundreds of dollars and most insurance programs do not cover teeth whitening.  Of course, the dentist will do a very thorough job and you will get better results with long-lasting effect.  Recommended if you have really bad looking teeth from years of neglect and you want a good job done and have the money to spend.  (Related:  Straight teeth with Invisalign)

In-home bleaching

In this process, you buy the bleaching agent yourself and many of them are now available over-the-counter.  Or in other words, you can simply go online and order them right away without a prescription from a doctor.  Typically, you will apply a gel on your teeth, let it dry for a few seconds, and just forget about it.  How long you wear it and how many applications will be needed for the complete program depends on the product that you buy.  So it is best to do your research and then pick the product that best suits your personal situation  (Oral care).  Recommended if you do not want to spend the money with the dentist or if your teeth are in reasonable shape and you just want to make sure that you look better.  (Related:  How to take care of your teeth)

Using a teeth whitening toothpaste/strips

Probably the cheapest and zero-hassle option.  You simply change to this new toothpaste or apply the strips.  They are very affordable and most leading toothpaste brands like Starbrite, Colgate Simply White and Crest Whitestrips do a great job if you have only minor yellowing of teeth and your teeth are otherwise in good shape.  GoSmile, while somewhat more expensive, is a better product.

Taking care of teeth after whitening

• Follow the advice of your dentist if you have visited one.  (Related: Dental facelift)

• Brush your teeth after every meal and definitely rinse your mouth with water every time you eat/drink something.  Also use a mouthwash like Listerine.

• Limit consumption of coffee.  (Related:  Cold sores on lips)