So what’s the science behind red wine staining? Why are some wines worse than others, and why do some people experience staining so much worse than others? Well, along with coffee, wine is one of the worst beverages to cause teeth stains and enamel erosion. This is thanks to chromogens, otherwise known as the pigment in red wine. These chromogens are also found in coffee, tea, and berries, which are other culprits to stain your teeth. Dark pigment-producing substances, chromogens bind to your teeth to cause staining, and the more there are, the deeper the stain. *Ew* but they also stick easily to plaque on your teeth, which can be why they affect everyone differently. Of course colour permeation gets more intense as you go from light- wine to full-bodied dark reds, as you might have guessed. This means, Pinot Noirs, Gamay, for example have less ability to stain your teeth than say Cabernet Sauvignon, Malbec, or Syrah. The colour saturation caused by chromogens is not the only factor that Wine Nots address however. Another factor called tannins, contribute to stains, as well as aftertastes.