Purpose: Increasing the flow and/or transparency of oil colour, making the paint fatter, decreasing the drying time. Composition: Alkyd resin, white spirit • Increases the durability and elasticity of the paint film • Makes the brush stroke run, depending on the amount added • Hardly influences the degree of gloss • Slightly yellowing • Can be thinned with white spirit or turpentine • Suitable as glazing medium • Flammable