Planet Waves Hydrate is the ultimate treatment to restore the character of dark, natural wood fingerboards on all stringed instruments. Hydrate's unique formula of oils and cleaners removes dirt and grime while restoring moisture to the fretboard, preventing cracks and other damage that can happen when a fingerboard becomes dry. Hydrate is also excellent for removing rosin from bowed instrument fingerboards. 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.