Wash the skillet with warm water and a small amount of mild soap if needed
Scrub off any rust or residue with a non-abrasive pad or steel wool
Rinse thoroughly and dry completely
Place the skillet on the stove over low heat for a few minutes to remove all moisture
Apply a very thin layer of oil to the entire skillet, inside and out
Use a lint-free cloth or paper towel to wipe off all excess oil
Preheat the oven to 450°F to 500°F
Place the skillet upside down on the middle oven rack
Put a baking sheet or foil on the lower rack to catch drips
Bake for 1 hour
Turn off the oven and let the skillet cool inside
Repeat the oiling and baking process 2 to 4 times for a stronger seasoning
Use the skillet regularly and dry it immediately after washing
Apply a light coat of oil after each use if needed