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

https://smart-wiki.win/index.php/Does_Whitening_Gel_Work_on_Tea_Stains,_Or_Is_That_A_Myth%3F

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