Wood finishes are protective coatings applied to wooden surfaces to enhance their appearance and durability. They come in various types, including varnish, stain, lacquer, and oil. Each type serves a different purpose, such as adding color, providing a glossy finish, or protecting against moisture and wear. Applying a wood finish involves preparation, such as sanding the surface, followed by the application of the chosen product. Proper finishing not only improves the wood's aesthetic appeal but also extends its lifespan by shielding it from environmental factors like humidity and UV light.