Fast Fret is not a spray, and it contains no silicone. It’s a liquid in an applicator. Use it on strings, fretboard, back of neck. Fast Fret lets fingers slide freely, keeps strings clean, and is good for wood.
GHS Fast Fret String Cleaner
GHS Fast-Fret String Cleaner cleans your musical instrument strings, brightens your sound, and prolongs fingerboard life while letting you play faster than you ever imagined! Convenient applicator and cloth. For all stringed instruments.