Gamblin’s leanest oil-painting medium, formulated for three principal uses: creating fluid underpaintings, preparing wooden panels for oil painting, and oiling out dry paint layers to restore colour saturation.
Made from Gamsol, safflower oil and soy-based alkyd resin, it increases paint flow and transparency without producing a high-gloss surface. It dries to a subtle satin or semi-gloss finish. Thin washes made with traditional underpainting colours generally become touch-dry within 24–48 hours.
