Coffee stains on a stainless steel sink are common in kitchens where coffee is brewed, poured, or cleaned frequently. These stains usually appear as brown or dark discoloration, often around the drain area or along the bottom surface where coffee residue dries.

Candle wax can accidentally drip into a stainless steel sink during cleaning, decoration removal, or household activities. Once the wax hardens, it can stick firmly to the sink surface and become difficult to remove without scratching or dulling the finish. Using the correct removal method is important to protect the stainless steel’s surface texture and maintain its clean appearance.

Calcium deposits on a stainless steel sink are a common result of hard water. They appear as white, chalky buildup or cloudy film, especially around the faucet base, drain area, and flat bottom surfaces where water tends to sit.

Burn marks on a stainless steel sink usually appear as dark discoloration, rainbow-like heat stains, or stubborn blackened patches. These marks often occur when hot cookware is placed directly in the sink, when boiling water is poured repeatedly into one area, or when heat-generating appliances or tools come into contact with the sink surface.