Scrub off loose rust with steel wool or a stiff brush
Wash the skillet with warm water and mild dish soap
Rinse thoroughly and dry completely
Apply a thin layer of cooking oil to the rusted areas
For heavy rust, make a paste of baking soda and water and scrub
For stubborn rust, soak briefly in vinegar and water, then scrub
Rinse immediately after vinegar treatment
Dry the skillet on low heat on the stove
Coat the entire skillet with a thin layer of oil
Bake upside down in the oven at high heat for about one hour
Let it cool in the oven
Repeat seasoning if needed
Store in a dry place after use
Wipe clean and oil lightly after each use