Gamblin Galkyd Gel is a gelled alkyd resin painting medium, formulated for painters who want to create transparent impasto. It can be applied in multiple layers. G-Gel does not contain driers so it does not dry as fast as most gel mediums. Adding driers causes oil paintings to darken and become brittle over time. Galkyd Gel contains a very small amount of silica so it remains very transparent and light-weight. The viscosity of G-Gel is so high that it has no flow, so it holds brush and other marks in place. It mixes with and thins all Gamblin artist's materials.