Gamvar: Gamblin's Easy-to-Use Picture Varnish for Oil Painters
Amazon.com: Grumbacher Picture Gloss Varnish for Picture and Oil & Acrylic Painting, 11 oz. Can
GRANOTONE Acrylic Artist's Varnish | Non-Yellowing | Non-Toxic | Anti-Crazing | High Gloss Finish | Suitable for Pro Artists, Hobby Painters & Kids | Made in India | 1000 ML - Amazon.com