Varn's Ink Drying Stimulator is A Water Fountain Additive To Speed Ink Drying. It's a special water fountain additive which improves the surface drying of lithographic inks. By speeding surface drying, 'ink set-off' is reduced, jobs turn over faster, with less chance of smudging and streaking and there's overall reduction or elimination of the use of spray powder. The use of Ink Drying Stimulator can speed up production schedules, particularly on jobs where ink drying is a problem.