DebAnn wrote:
You can buy spray protectors that artists use for sealing drawings, charcoal illustrations etc. Make sure your photo print is thoroughly dry before applying and don't overspray. I seem to remember it worked fine when I tried it some time ago. You should be able to find it in an art supply store.
I used a spray protector at one time to keep glossy prints from getting fingerprints, but it had a bad habit of subtly turning yellow.