Planet Waves Lemon Oil is a natural cleaner and conditioner formulated to remove dirt, grease and build-up from unfinished woods on all string instruments. It's particularly recommended for use on fretboards and unfinished woods. Lemon Oil also helps to condition your instrument to resist dryness which can prevent cracks and extend its life. Planet Waves, part of the D'Addario family of brands, is known for innovative, problem-solving, quality musical accessories. Planet Waves offers a complete line of award-winning accessories including cables, picks, tuners, capos, straps, humidifiers, maintenance tools and more.