How to whiten your teeth

use a teaspoon for everything.

put in a little bowl some toothpaste (the amount you usually use)

add the hydrogen peroxide

add water.

add the baking soda

Mix all of the ingredients very well, and wash your teeth for 2 minutes. Then rinsed your mouth. And wash your teeth again with normal toothpaste but with another toothbrush.

Repeat this once a week until you get the result you want.