Owners of stainless steel appliances can remove fine scratches using dry-powder, non-abrasive cleaners, such as Comet or Revere. Deeper scratches must be sanded with wet sandpaper and polished afterward. HowStuffWorks warns that you must rub along the grain of the stainless steel to avoid making the scratch worse.
Stainless steel is an alloy that steel manufacturers produce in a number of different grades of finishes. To remove scratches effectively, you must be aware of the type of stainless steel your appliance is made of. HowStuffWorks recommends a number of stainless steel scratch-removal kits; Scratch-B-Gone and the Siege 63001 Stainless Steel Sink and Cookware Scratch Remover Pack are two such kits. These scratch-removal kits are ideal if you are unfamiliar with the particular grade or finish of stainless steel on your appliance. These kits help owners to avoid accidentally damaging the appliance.
Some stainless steel appliance manufacturers sell their own cleaning and scratch-removal products. Owners of stainless steel appliances can often expect better results using a stainless steel scratch-removal product made specifically for the appliance in question. HowStuffWorks suggests checking with your local home improvement store for stainless steel cleaners designed for the specific appliance that is in need of repair.