Kolstein cleaner removes stubborn dirt and rosin build up without disturbing the finest varnish or other finishes. The cleaner contains a preservative oil which is excellent for ebony and rosewood finger boards as well exotic woods. It helps to blend in minor gouges and scratches with the original finish. Large 32 ounce can. California Residents Only: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov