Montana Gold Tech Varnishes are acid-free, quick drying, clear varnishes that are made from an acrylic base. They work great for art, hobby, crafts, and DYI projects. They protect and fix paint onto the surfaces like canvas, paper, charcoal, drawing, fiber, wood, photos and more. The varnishes work well for both interior and exterior uses, have no yellowing or desaturation and protects against oxidation. Not compatible with synthetic base lacquers. Matte finish.