Always keep your knife clean. Wipe away debris and, if needed, wash with a mild detergent. Always dry your knife after cleaning. Leaving it to dry by itself or soaking it in water can cause the knife to show rust spots. To protect your knife, simply wipe a light coating of oil on the blade, pivot points, and lock (if applicable) before storing. Some food types for example lemons will give your knives a patina if not properly cleaned after use. Some coatings for example, Oxide Black wash will come off if left uncleaned overnight after cutting lemons, meat etc. 


After applying a light coating of oil to blade and pivot, store folding knives closed and fixed blades in their sheaths or blade guards. For knives with leather sheaths it’s not recommended to store them for extended periods of time in the leather sheath as the sheath and blade steel will cause a reaction and in return leave rust or patina marks on the blade.

Always remember that even the most advanced knife steels rust if not cared for properly.