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

your teeth may be yellowing and what you can do about it.

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1. Your Natural Tooth Color Might Not Be Pure White
Contrary to popular belief, not everyone has naturally white teeth. The natural color of teeth varies from person to person and can range from shades of white, off-white, to slightly yellowish. This is largely determined by the thickness and quality of your enamel and the color of the dentin beneath it.

Enamel, the hard outer layer of the tooth, is semi-translucent. The underlying dentin, which is naturally