1. Hydrogen Peroxide
For hundreds of years, a natural bleaching agent known as hydrogen peroxide has been in use as a bacteria killer and disinfectant. It has become commonplace in most dental whitening kits in recent years because it’s also useful for whitening your teeth.
You can buy over-the-counter whitening kits that contain hydrogen peroxide, and they will cost you a far sight less than an in-chair whitening session with your dentist. What’s more, there is plenty of research available that shows hydrogen peroxide is useful for bleaching.