As someone who fuels my workday with constant tea, I know how easily enamel...

https://www.bookmark-step.win/love-your-morning-coffee-but-hate-those-persistent-tea-stains-i-ve-spent-weeks

As someone who fuels my workday with constant tea, I know how easily enamel dulls. I’ve spent weeks testing at-home whitening gels to separate the effective formulas from the hype