Coconut oil
Apply some coconut oil to your teeth before brushing your teeth and leave it for 15-20 minutes, then thoroughly brush your teeth with your toothpaste. Repeat this procedure twice a week.
Activated charcoal mask
Prepare a mixture by mixing ground charcoal with water to get a sour-cream texture and then apply it carefully to your teeth. Leave that mixture there for 2 minutes, and then rinse your mouth thoroughly, then thoroughly brush your teeth. Repeat this procedure twice a week.