My teeth keep getting more yellow even though I brush twice a day. Why won’t they stay white?

and stain teeth.
Even nicotine in vaping products, which is colorless, combines with oxygen to turn yellow, contributing to stains. Quitting these habits not only benefits your overall health but also helps maintain whiter teeth.

6. Are You Brushing Wrong? Technique, Timing, and Overbrushing
Brushing your teeth twice a day is essential, but doing so incorrectly continue reading …