Reka Protect spray. Sweat and oils in the hands contain various substances that chemically attack lacquered and unlacquered finishes, even when your instrument is not being played. This calls for Reka Protect spray -- total care for polished, lacquered, and plated instruments. Sprayed on the surface of metal instruments, it cleans and protects in one step against corrosion from the hands. Apply it thinly and rub it in with a soft cloth. 50 ml.