Your natural teeth can stain quite easily with repeated exposure to common culprits, including red wine, coffee and tea. Veneers are primarily stain-resistant because they are less porous than your tooth enamel. Your natural tooth enamel is susceptible to staining and absorbs the coloring from foods and beverages or habits such as smoking. While veneers may experience discoloration down the road, they typically provide a brighter, flawless smile for years or decades for some.