Pressed from American flax seeds and refined to exceptional clarity, this oil maintains the fundamental properties painters have relied on for centuries. Gamblin's industrial refining process removes impurities while preserving the oil's natural drying characteristics, giving you a clean base for medium formulation or direct color modification. Add it sparingly to thin paint consistency without compromising film integrity, or incorporate it into traditional recipes alongside resins and solvents.

The oil increases transparency gradually, useful when you need to maintain color intensity while building translucent glazes over dried underlayers. It also extends drying time, keeping paint workable longer during blending or alla prima sessions. This matters when you're working wet-into-wet across large passages or need extra time to resolve transitions.

Use it in moderation. Excessive oil weakens paint structure and leads to yellowing over time. For most applications, a few drops mixed into paint on your palette provides sufficient flow without oversaturating the pigment binder. Available in 125ml bottles for occasional use or 360ml when you're mixing larger batches of custom mediums.