Yes, I definitely recommend this, but there’s a right way to do it. Just follow these steps and you’ll be absolutely fine. First, grab a piece of kitchen towel and wipe the interior of the cast iron skillet while it’s still warm. This is to remove the majority of any food and oil that's present. Next, rinse the cast iron underneath hot running water and use a non-abrasive sponge or scourer to clean the skillet. If you’re struggling to get the last bits off, then by all means use some standard kitchen detergent too. Dry the cast iron cookware by hand. Don’t air dry it, as you run the risk of rust building up if it's left wet for any length of time. The final step involves heating the skillet on a low heat to get rid of any remaining moisture.  Add a small amount of oil to the skillet while it’s still on that heat, and then wipe the oil into the surface using paper towels. Once the surface is smooth and bright once more, with no oil on the surface, let the skillet cool down before putting it into storage.