Sun-Bleached Linseed Oil is made by exposing raw, cold-pressed linseed oil to sunlight in shallow tanks covered with clear glass for a period of more than one month. No driers or other additives are used in the making of this oil. The exposure to sunlight lightens the oil considerably but only slightly thickens it. This linseed oil has about the same color as walnut oil or lighter, so it can be used with pale colors and white. This oil can be used as a medium or added to homemade mediums.