Similar to linseed oil, Boiled Linseed Oil is a superior quality oil and has been treated with hot air so it dries quicker forming a tough, hard wearing and slightly glossy finish. Suitable for use on almost all wooden surfaces, terracotta tiles and all porous stone, the oil penetrates and seals the surface providing protection for interior and exterior surfaces. Our Boiled Linseed oil is completely safe to use on all types of wood, apart from exterior items made from oak.