After you have baked and cooled the comal you can use it as is or repeat the seasoning process for rougher pieces. Do not wash your comal with soap or put it in the dishwasher. After each use simply scrape off excess food and rub a light coat of oil onto its surface. If you must get it wet, do not use soap and dry it thoroughly and apply a coat of oil. Keeping the surface lightly oiled will prevent rust and damage. If rust occurs, scrub it off with steel wool or course salt and re-season.