If you rely on daily coffee or tea, you have likely noticed subtle yellowing...

https://wiki-book.win/index.php/Is_It_Normal_for_Whitening_to_Look_Uneven_at_First%3F_A_Reality_Check_on_Your_Smile_Routine

If you rely on daily coffee or tea, you have likely noticed subtle yellowing over time. I spent months testing at-home whitening gels to find options that actually lift stains without compromising your enamel