Gamblin Gamvar Picture Varnish 4oz

Gamvar is a low molecular weight synthetic-resin gloss varnish developed by conservation scientists at the National Gallery. Package makes enough varnish for 8 X 10 sq feet of paintings made with oils as well as acrylics. Gamvar can also be used for retouch.
With a high refractive index similar to that of natural resins, colors are fully saturated to bring out the best in the painting.
Unlike varnishes made from natural resins like damar and mastic, Gamvar does not yellow with age or become more difficult to remove. It contains a UV stabilizer and offers some measure of protection to less lightfast pigments, depending on how thickly it is applied.