Fleet Street Pegworks Tooth Lacquer Liquids are temporary pigments that are safe and effective for use on teeth, as well as most veneers and crowns.To use simply part the lips and keep them away from the teeth, use a tissue to throughly dry teeth and surrounding areas. Apply Fleet Street Pegworks Tooth Lacquers. As you would with any other alcohol-based product and let dry completely. Run a wet tongue over the area to help the lips glide over the application. Remove by brushing teeth with toothpaste.