Gamblin Solvent-Free Gel is the only solvent-free painting medium that supports a broad range of painting techniques with minimal compromise to color, dry time and texture. Solvent-Free Gel gives colors more flow and transparency, yet holds the shapes of brushmarks. Made from safflower oil and alkyd resin, it is non-toxic and contains no petroleum distillates. To ensure proper drying and avoid wrinkling of paint layers, use in moderation and apply mixtures of gel and oil colors thinly.