Fretboard 65 Ultimate Lemon Oil 1 oz. -the latest addition to Dunlop's world-famous line of guitar care products and the logical evolution of the 01 Fingerboard Cleaner and 02 Fingerboard Deep Conditioner. It's specially formulated to clean away grime and return your guitar's fretboard to its original luster, quickly and easily. Apply a thin coating using Dunlop's spray applicator top, work the gunk free, and wipe clean. And once the dirt is gone, Fretboard 65 will help keep it away by providing an invisible sealant against stains and moisture.