CLARK’S uses coconut oil to season traditional cast iron and carbon steel cookware. There are no synthetic chemicals added at all. The oil is highly refined, and contains no animal fat, peanut oil, or paints. Unlike flaxseed, grapeseed, canola or palm oil, CLARK’S Cast Iron Oil will never go rancid. Prevent rust and maintains the right oil level on your carbon steel or cast iron: Pots and Pans, Skillets, Woks, Dutch Ovens, or Griddles! If you sell Cast Iron products, you'll want CLARK'S!