PT, Boiled Linseed Oil In Metal Can, A Natural Oil Derived From The Seed Of The Flax Plant, Used To Extend & Fortify Oil Based Coatings To Assure A Uniformly Tough, Elastic & Glossy Film That Repels Water, Resists Weathering, Retards Chalking & Prolongs Coating Life, Also An Easy To Use, Quality Finish For Fine Woods, Furniture & Antiques, Dries In 12-18 Hours, Read Label Carefully Before Use.