- A Mouth Guard (You can find them in the sports section for a buck or two)
- 2 parts baking soda
- 1 part hydrogen peroxide
- Mix the two together until you get a toothpaste consistency.
- Fill the tray.
- Place it in your mouth and leave in for about 10 minutes.
It might take a week or two for you to achieve the whiteness you’re looking for.