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

of your teeth.
Hormonal changes, such as those occurring during pregnancy or menopause, can affect oral health and potentially contribute to discoloration. While these factors are largely beyond control, maintaining good oral hygiene can help mitigate their effects.

Professional Whitening vs. DIY Kits: Why Results Fade and What’s Safe
Professional whitening treatments offer more dramatic and longer-lasting results compared to over-the-counter kits because they use higher concentrations of bleaching agents. However, these results are not permanent and can fade over time, especially with exposure to staining substances.
DIY kits are