Cleaning and Polishing
Stainless steel is not 100 percent corrosion-resistant. It needs be taken care of. The only way it will be corrosion-resistant is when it is clean and in the presence of oxygen.
Stainless steel needs to be cleaned regularly to preserve corrosion resistance and maintain a pristine appearance. With proper care, and provided an application-appropriate grade was selected, stainless steel will not corrode. That said, corrosive substances accumulate on neglected surfaces. Stainless steel needs to be cleaned regularly with safe products.