Let the skillet cool completely
Scrape out any food residue
Rinse with hot water
Use a small amount of mild soap only if needed
Scrub with a non-abrasive sponge or brush
Avoid soaking the skillet
Dry it immediately with a towel
Heat it on the stove for a minute or two to remove remaining moisture
Apply a thin layer of oil to the surface
Store it in a dry place