Head question

[Terrestrial12]

Yall that mentioned getting the oil paintings varnish from hobby lobby what style are u buying? The gloss varnish I'm seeing is yellow in color. Is that the right stuff? Or they have other stuff called gloss "medium" that look like vanish but I'm not a painter and don't know the lingo. But 10 bucks for a few ounces is a much better deal than 11 bucks for half an ounce of hard as hull if it's good stuff. Is it thin and does it penetrate? I just can't find a head cement I like so I'm loving this conversation!