Furniture finishers, also known as stainers, are professionals who specialize in the finishing of furniture. They use a variety of techniques to apply stains, varnishes, and other finishes to furniture pieces to enhance their appearance and protect them from damage. Staining is a process that involves applying a colored pigment to the surface of the wood to give it a unique look. Furniture finishers also use sanding, buffing, and polishing to create a smooth, glossy finish.