Stain Resistant

• Iron is stainless steel's primary element, and it corrodes when exposed to air and water. The chromium oxide film that protects the steel is self-repairing, if sufficient oxygen is present; however, corroded or worn film will eventually result in rust, if the iron is exposed to the elements. So while stainless steel is touted as being stain resistant, prolonged use of harsh chemical cleaners on the chromium oxide film could ruin your stainless steel.
  
  

Cleaning

• Opt for mild solvents over harsh chemicals to avoid dulling and weakening your stainless steel product. Hot water, dish-washing liquid and a soft towel are more than sufficient to keep stainless steel clean, and they won't cause damage. Stainless steel pots and pans with hard-to-remove food remnants can be soaked for thirty minutes in hot, sudsy water and then scrubbed with a nylon non-abrasive pad. Steel wool pads cause hairline scratches in stainless steel, and should be avoided.
  
  

Discoloration

• If your stainless steel cookware is discolored, it might be salvaged with baking soda. Mix baking soda and water into a firm paste and apply it to the affected area. Gently rub the discoloration with the paste, followed by a water rinse, or wipe down with a clean towel. Depending on the severity of the discoloration, a few applications may be necessary.
  
  

Rust

• Do not use ammonia, bleach, chlorine or muric acid on your stainless steel, as they are too abrasive and will cause rust. If you have rust, gently use the baking soda paste or oxalic acid (follow the product directions carefully) for any stubborn rust spots. Silver cleaner should be avoided, as the product's compounds may leave unwanted stains.
  
  

Fingerprints

• Fingerprints are obvious on stainless steel. Glass cleaner, hot sudsy water, furniture polish (provides a wax coating), stainless steel polish or olive oil temporarily reduce and prevent fingerprints. Dulling or darkening may happen over time as oily buildup attracts dust and causes eventual discoloration. Wipe stainless steel weekly with warm, sudsy water to remove buildup, before applying additional coats of wax or oil.