Liquitex has a product called HIGH Permanent Gloss Varnish. Which of the GAC products is the equvilant?
The product sounds most similar to GOLDEN Polymer Medium. However, GAC 100 and GAC 500 may also be adequate substitutes. We noted on the label the High Gloss Varnish says for rigid supports only. This may be due to a harder, less tacky resin used. If a similar hardness is required from the GAC products, add in GAC 200, which is a very hard acrylic medium. The amount added would be dependent upon the required hardness, but generally start at a 1:1 mix with other paints and mediums.