These cast iron skillets are functional WORKS OF ART! Finex brings you the absolute best in cast iron cooking, from stove top to oven. They just get better with use. Pre-seasoned with 100% organic flaxseed oil for a durable, stick-resistant finish, FINEX is ready to cook right out of the box. Rinse new cookware with warm water and dry completely. To re-enforce seasoning use a little extra oil or cook something extra fatty, like bacon for the first few uses. A darker patina will develop over time, indicating a thicker natural seasoning, and will enhance the stick-resistant cooking surface.