If you’ve ever noticed your teeth looking a little darker after enjoying a glass of red wine or a rich curry dish, tannins may be the reason. Tannins are naturally occurring compounds found in many plant-based foods and beverages, including tea, coffee, red wine, soy sauce, and even some fruits.
They’re responsible for that slightly dry, puckering sensation you feel in your mouth when drinking certain wines or teas. But beyond taste, tannins also play a major role in how and why your teeth become stained over time.
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