Kershaw knife oil is engineered to protect and enhance your knife’s folding mechanism. Wipe away debris and, if needed, wash with a mild detergent. Dry thoroughly. (You may wish to use compressed air and/or a cotton swab to dry hard-to-reach parts.) Shake oil well before using. Put a drop of oil on all moving parts. You should be able to access the pivot, detent ball, and detent hole without taking the knife apart. Work the oil in by opening and closing the blade. Wipe away any excess. Apply a light coating of oil to the blade before storing.