Winsor & Newton Flow Improver

This additive increases the flow of acrylic colours, by breaking down the surface tension of the water. It is ideal for the application of areas of flat and even colour without changing colour strength. It is also effective for hard edge painting techniques, staining and water colour techniques. It maintains the stability of the colour and slightly slows drying, so colours will remain usable slightly longer when mixed with the medium. This additive maintains no colour shift from wet to dry when used with Winsor & Newton Acrylics.