Kyser Dr. Stringfellow Lem-Oil is formulated for fingerboards and other oil-finished wood surfaces. Dr. Stringfellow Lem-Oil cleans, polishes, preserves and protects against drying, and tones down scratches and blemishes. Contains no waxes or synthetics. Great when used in tandem with Kyser Dr. Stringfellow guitar polish for the ultimate in care and maintenance of any cherished instrument.