Oil-based stains are a type of wood finish that penetrates the surface of the wood, enhancing its natural grain and color. They are made from pigments suspended in an oil medium, which allows for deep penetration and a rich, durable finish. These stains are commonly used on furniture, cabinets, and floors to provide a protective layer while adding aesthetic appeal. One of the main advantages of oil-based stains is their longevity; they resist fading and wear over time. However, they typically have a longer drying time compared to water-based stains, and cleanup requires solvents like mineral spirits.