Product Catalog » Painting » Oil Mediums & Oil Solvents & Oil Varnishes » Demco Linseed Oil Demco Linseed Oil $0.00 Demco Linseed Oil Increases gloss and transparency Slows drying time An alkali refined oil Pale in color Reduces oil color consistency available in : 4 oz, 8 oz, 16 oz , 1 litre