I have been using this bottle of Martin Guitar polish since I think 1977. I bought a new D28 & they threw in the polish. I sold the D28, something to do with a daughter's sophomore year tuition, and kept the polish. Very mild stuff, probably edible. Cleans up greasy, sweaty handprints & spots nicely.
I used the woodworkers finishing wax to clean up the bodies on all three of my Guilds when they first arrived. It has a much harsher solvent & cuts caked on grime. Probably a lot harder on the finish as well.
I suspect regular use of the stuff might not be a good thing.
The Danish oil finish and some gentle work with superfine steel wool cleaned up the green gunk & caked on finger grime on the fretboards. I finished off the fretboard with the satin finishing wax. Left a nice slick surface & sealed up the grain pretty well.
No science involved in any of this, Just products I have been using for years & usually have in the paint locker.
I'm guessing the stuff in the specialty "Guitar" finish products isn't much different. I may invest in some fretboard oil, a smaller, guitar case size container would be convenient.
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