A while ago I asked about framing without using glass and got some useful information. But I recently heard about Hahnemühle Varnish , which they describe as a "protective varnish for canvas inkjet prints."
Now, I don't print on canvas (don't like the look for my work) and I don't print inkjet. I use bayphoto.cam (via smugmug) and I'm quite happy with their work. I have them print to Kodak Endura paper, using the metallic version 75% of the time.
I've contacted Hahnemühle to ask about this varnish on photos, not canvas inkjets, but they said it was developed for canvas inkjets and was only tested on canvas inkjets. Are there any other products which would perform a similar function for non-canvas prints?