Very interesting. Just recently we installed an ultra violet hardening system for the varnish on our 7 unit Cerutti press. The inks are normal solvent based gravure inks...only the varnish is hardened by UV. I'll have to check in to this. I also have some contact dermititous...but mostly only to certain woods. Wish I'd been more careful when I was young...but...what the heck...I wasn't.