Like Meguiar's Scratch X. Contains silicone. This from the Acoustic Guitar Forum: From William Cumpiano, on Silicone; "Now silicones are really oils that never, never dry out. Now that could be a good thing, but that means that the stuff can "migrate" forever. You get some on your guitar, then on your hands, and you touch the table and leave some on the table, or the guitar leaves some on the case fabric, and then someone else touches the case fabric and carries some onto their guitar, and the stuff migrates every where and forever, because it just stays slick and sticky forever. For people who work on guitars, the stuff is hellish because NOTHING will stick to it, wherever it happens to be. Glue, finish, nothing. Whenever I see the lustrous, oily-slick, sticky film on a guitar from a well-meaning owner who has been persuaded that the guitar will somehow "die" or "dry up" because they're not lathering it ("nourishing it") with some commercial fingerboard oil or spray on guitar goop), I go into hazard-avoidance mode: I quarantine the case and take a roll of paper towels and disposable plastic gloves and wipe as much of the goo off as I can, and then go over the whole guitar with a good guitar "cleaner" (Martin makes one) and then toss all the paper and cloth debris into a plastic bag and ditch it. Then I wash my hands with soap and water. Then I start work on the guitar."