Fast-Fret from GHS is a string cleaner and lubricant designed to safely remove dirt and restore your tone. It contains no silicone. Simply use the liquid applicator to apply Fast-Fret on the strings, up and down the length of the fretboard. With the supplied cloth, quickly wipe the strings and fretboard to remove built-up dirt and oils. You can also treat the back of the neck for a friction-free feel, and use it to condition the wood on unlacquered fretboards. The lubricating effect of Fast-Fret lets your fingers slide freely on the strings and neck, helping you play smoother and faster.