Carbon Steel pans progress as you do, and the end results are one-of-a-kind pieces that reflect back your journey in the kitchen. de Buyer’s Mineral B line arrives protected by beeswax, ensuring your investment arrives rust-free. de Buyer always refines with an eye toward the natural world: they discovered that beeswax protects pans from oxidation and improves seasoned steel. With gradual seasoning the pan will have naturally non-stick properties. Mineral B allows you to cook at high temperatures on the stove. Can be used for flash oven use for up to 10 mins due to coating on the handle.Handwash only using mild dish soap. Dry immediatly after washing to avoid rust. Made in France.