Ouch!
Gamvar is wonderful, a tad cumbersome but worth the effort. It is colorless and easy to apply. It is made by the Gamblin company, they are familiar with working in high humidity conditions. I have a painting that fogged using damar. Because of this I called them about their varnish, as I had to varnish a painting in situ at a waterfront Newport home, they said if it works in the coastal Northwest it will work anywhere. To say the least I was nervous, but so far it has performed admirably.
I just get the stuff and shake it for 24 hours.
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