Unsightly food pigments can be deposited in the uppermost enamel layer, (e.g. from fruit, added food colourings, tea, coffee, red wine, etc.) and from tobacco products (tar).
Unsightly food pigments can be deposited in the uppermost enamel layer, (e.g. from fruit, added food colourings, tea, coffee, red wine, etc.) and from tobacco products (tar).