CAS AlkydPro Mediums are a perfect complement to AlkydPro Oil Colors. Great for speeding the drying of both alkyds and traditional oil paints, they can also be used to extend colors, build texture, create impasto effects, and much more. This transparent medium has a heavier consistency that retains its shape for impasto painting techniques. Use it to build structure by applying it directly and covering it with paint, or mixing it with paint on the palette. It dries thoroughly to allow the building of a surface up to a ¼" (0.6 cm) per application. It also works as an extender and can be diluted with solvent if needed.