F.N. Sharp Knives were designed to offer an exceptionally sharp, long-lasting edge and are made to resist the strongest food acids, hard water and even accidental bouts in the dishwasher! Due to the quality of steel used to create the blades, we recommend having your F.N. Sharp knives professionally sharpened as needed. In the meantime, we ask that you care for your knives as you would care for any of your favorite kitchen tools by keeping them clean, dry and stored in a knife block or other proper knife storage.