Paint in heavy impasto techniques without wasting valuable pigment with this quick drying, elastic, alkyd resin-based Lukas Painting Butter oil medium from Lukas! Formulated with special drying agents and thickeners, this impasto medium helps keep the thick constitution of heavy paint application with no leveling, ensuring that your paint structure remains. Layers will dry without shrinking, cracking or wrinkling! Lukas Painting Butter Impasto Medium is a transparent, slightly amber-tinted mixture of alkyds, thickeners, and driers and is the same consistency as straight oil paint: Mixing it with your paint will thin the color somewhat but allows you to paint in heavy impasto layers while not wasting pigment. Ensures the layer dries completely and evenly.