Why Use Impasto Medium: Paint In Heavy Impasto Techniques Without Wasting Valuable Pigment! Layers Will Dry Without Shrinking, Cracking Or Wrinkling! In this article we are focusing on LUKAS Impasto Oil Painting Medium used to mix with oil paints for impasto techniques. What is LUKAS Painting Butter? Lukas Painting Butter is very heavy bodied and therefore gives…..