This Type of Coffee Is the Least Likely to Stain Your Teeth, According to Science
Briefly

Light-roast coffees, with higher acidity due to intact tannins and chlorogenic acid, cause more teeth staining than dark-roast coffees where these compounds are broken down through longer roasting periods.
Acidic components in coffee, like tannins and chlorogenic acid, attach to teeth and cause persistent staining, especially when the pH level falls below 5.5.
Read at Inverse
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