Grumbacher mediums thicken or thin paints without harming their adhesive, binding, or film-forming qualities, and allow artists to achieve increased flow and rapid or slow drying. Also proven to guard against yellowing and cracking.
Oil Painting Medium I — For use with artists’ oil colors where a matte finish is desired, this medium is especially useful for under-painting on an absorbent gesso ground or for mural work. Add it directly to oil color in small quantities for increased fluidity and enhanced ease of application. Composed of poppy oil, copaiba, balsam, and solvent, it does not affect the brilliance of even the most subtle tints.
® Grumbacher is a registered trademark of Chartpak.