за что купил:
• Don’t use anything on the fretboard other than water...seriously: nothing! Not lemon oil, not Fast Fret, not grease, not coconut oil...nada...zip...nothing. The frets are chemically bonded to the composite fretboard and they will hold in place forever unless you do something to weaken the bond.
отсюда:
https://flyclone.com/viewtopic.php?p=1031