Eco-friendly Solvent-Free Fluid Medium gives oil paints a more fluid consistency and moderately speeds drying time. Handcrafted at the company's wind-powered factory in Portland, Oregon, the medium has been developed to support a broad range of painting techniques with minimal compromise in terms of color, dry time, and mark making. They are non-toxic, contain no Gamsol or petroleum distillates, and clean up with soap and water. Since 1980, Gamblin has handcrafted luscious oil colors and contemporary painting mediums that are true to historic working properties, yet safer and more permanent. Gamblin Solvent-Free Oil Mediums extend that mission by giving oil painters alternatives that don't require the use of toxic solvents.