Fret Board Juice Fret Board Juice differs from most other fretboard dressings in that it is 100 % very pure white mineral oil. It is a safe cleaner and moisturizer without any solvents (lemon,citric,etc.) that can loosen frets and inlay over time. Fret Board Juice Price: $ Stock #: 2400010 Qty: © Copyright 2009 Big Bends LLC. All Rights Reserved.