Some months ago i noticed my teeth were getting some weird spots and were not bright white anymore. Well some people told me this actually happens with age and sometimes because of the toothpaste we are using.
So i brush normally in the morning but instead of the normal brushing at night i started to brush my teeth only with baking soda. It’s not tasty (its pretty salty) but in a couple of days the spots are all gone and they are getting bright again.
A cheap and Eco friendly tip to whiten your teeth
* Note: I’m not sure if this is harmful or not. I got this tip from my grand dad and so far nothing bad has happened to me.