This gel-based, solvent-free painting medium supports a broad range of painting techniques with minimal compromise across color, dry time, texture and mark-making. It gives colors more flow and transparency, yet holds the shape of your brush mark. This medium increases gloss and has a moderately fast drying rate. The non-toxic gel contains no Gamsol or petroleum distillates, and is made from safflower oil and alkyd resin. 150 ml tube.