This paint medium from Winsor and Newton is a low-viscosity alkali refined oil of pale color which is a slower drying variant of the linseed oils. Refined Linseed Oil makes oil color "fatter." It reduces the consistency of the paint and increases gloss and transparency. Add to fast-drying oils to balance and slow drying times. Details: Pale 8.45 fl. oz. (250 mL) Slows drying time Makes oil color fatter Reduces paint consistency Increases gloss and transparency For use with oil paints