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

underlying dentin, which is naturally yellowish, can show through, especially if the enamel is thin. Understanding that your natural tooth color might not be pure white can help set realistic expectations for tooth whitening efforts.

2. Enamel Thinning: When the White Outer Layer Wears Away
Enamel thinning is a common cause of teeth appearing more yellow.continue reading …