GHS Fast Fret String Cleaner is a widely used guitar product which can extend the life of your guitar strings. Glide it onto your strings with the applicator and wipe it off with the lint-free cloth (included). It keeps your strings clean and allows you to play faster. It also reduces excessive finger noise. It's not a spray and contains no silicone. It's a liquid in an applicator. Apply it to strings, fretboard, back of neck. Lets fingers slide freely, keeps strings clean, is good for wood. A professional guitar player's secret!