Whether you've got a stainless-steel sink or bathtub surround, you are often left with scale deposits from your water supply. This leaves your attractive, flawless stainless-steel surface with unattractive hard water stains that look like small dirty drops of water. To remove the hard water stains, you must use a product that will dissolve the scale deposits, thereby removing the stain. A few commercial cleaning products are designed to handle this problem, but a simple household ingredient will work just as well, and will save you money on cleaning supplies.
Saturate one side of a cleaning cloth with pure white vinegar. The vinegar has a slight acidic quality that is safe for stainless steel, yet highly effective in breaking up the scale deposits.
Wipe the damp side of the cloth over the hard water stains, scrubbing in small, vigorous, circular motions. Re-saturate the cloth with vinegar as needed and continue wiping until all hard water stains are removed.
Rinse the cloth with warm water, wring it out and wipe it over the stainless steel to remove the vinegar solution.
Wipe the stainless steel with a dry cloth. This will prevent new hard water stains from developing.