Pebeo Dutch Medium for oil colours is a brilliant, transparent, semi-paste medium that gives exceptional possibilities. Made from a base of alkyd and acrylic resins, it dries by oxidation and practically never yellows. When used in small quantities it gives a richer look to the colours along with stiffness for working precisely. In strong concentrations, it gives brilliance and depths of great beauty as well as glazes that possess a flowing roundness. It can be cleaned or thinned with mineral spirits or turpentine.