Fretboard 65 is specially formulated to clean away grime and return your guitar’s fretboard to its original luster & we use it on all our guitar servicing for rosewood or ebony fingerboards It quickly and easily applies a thin coating using Dunlop’s Dab-O-Matic applicator top, work the gunk free, and wipe clean. It’s that simple. And once the dirt is gone, Fretboard 65 will help keep it away by providing an invisible sealant against stains and moisture. Player tested, tech approved—Fretboard 65 Ultimate Lemon Oil will clean up the mess that the music business leaves behind.