Please be aware to keep the lid on tight when not in use to stop it hardening.
I have been so impressed with Rublev's Impasto Medium it is amazing and compared to Liquin's Impasto Medium there is no comparison! This is another step down in viscosity from the Impasto Medium and if sculptural paint is what you want then this is the ultimate medium.
Rublev's description - "Impasto Putty is an oil painting medium of finely ground calcite, barite and bentonite in bodied linseed oil. Use it to extend paint without altering the consistency, making oil colors 'short' and buttery for impastos. Stiffer than Impasto Medium this putty makes colors slightly transparent while allowing you to build impasted, thick applications of paint. When added to oil paint, Impasto Putty does not alter its color temperature. It can be thinned with solvent or oil. Depending upon the proportion added to paint, Impasto Putty does not affect the drying time significantly.
Impasto Putty does not contain stearates, solvents, driers or natural or synthetic resins, so it is safe to add to oil paint without the worry of cracking or delaminating."