Paste medium of finely ground calcite, silica and bentonite in pale linseed oil. Semi-transparent. Gives paint crisp consistency for impastos with fine detail. Thin with solvent or oil. Impasto Medium is an oil painting medium of finely ground natural minerals, including calcite, barite, and talc, in pale linseed oil. Use it to extend paint without altering the consistency, making oil colors 'short' and buttery for impastos. Stiffer than Velazquez Medium, this putty-like medium makes colors slightly transparent while allowing you to build impastoed, thick paint applications. When added to oil paint, Impasto Medium does not alter its color temperature. It can be thinned with solvent or oil. Impasto Medium does not affect the drying time significantl,y depending on the proportion added to the paint. Impasto Medium does not contain stearates, waxes, solvents, driers, or natural or synthetic resins, so it is safe to add to oil paint without worrying about cracking or delaminating.
