After 5 minutes, the yellow color of the TEETH becomes PEARLY WHITE and shiny 🥚– Method in the first comment

A few drops of fresh lemon juice
(or alternatively: coconut oil for a milder option)

Preparation and use:
Mix the baking soda with a few drops of lemon juice until you get a paste.

Gently apply the paste to your teeth using a clean toothbrush.

Leave to act for approximately 1 to 2 minutes (no more).