White mineral oil blade oil is a non-toxic, non-drying product derived from petroleum that is colorless, odorless, and flavorless. It has a variety of applications for knife and industrial machinery maintenance. Our mineral oils are most used in food-handling applications. This knife blade oil stops rust from forming due to the oxidization of high-carbon steel, by creating a barrier against environmental humidity and water Ease of use: Provided precision application twist cap makes it easy to disperse the exact amount of oil onto any of your wood products. Pure USP Mineral Oil: Made with the highest quality white mineral oil, making it safe for contact with food Cangshan Knife Blade Oil is USP and Kosher Certified Proudly made in the USA