Cobra Auxiliary Mediums are produced for use with Cobra Artist Watermixable Oil Colour. They can be used to alter and enhance the working properties and characteristics of the colour, much like the use of conventional Oil mediums in working with oil, yet like Cobra colour they are also watermixable. This Painting Medium can be used to increase the flow and transparency and gives colour an oiler consistency. This Medium can also increase the durability of the dried paint film layer. Available in 75ml jar. UK shipping by road only. Not available for International or Northern Ireland delivery.