I've seen the Material Safety Data Sheet and patent info for NeverDull... It has mineral spirits as the prime ingredient. It is also listed as a corrosive as well. If you leave enough residue on a metal long enough it will eat into it. For most polishing applications there is seldom enough residue to matter though. Most coin dealers will shudder if you mention it by name though. I've been tempted to get an ultrasonic cleaner to de-lube my sized cases.
|