Stainless steel can change color for a variety of reasons. Here are some possibilities:
Heat Tinting: When stainless steel is heated to high temperatures, the oxidized top layer can thicken, which causes a rainbow tint. This is often seen on stainless steel cookware that’s been exposed to high heat, but it could potentially occur in a sink as well.
Surface Treatment: Some stainless steel products are treated on the surface to have a gold color. This could be due to a metallic vapor treatment or a thin layer of gold plating. If your sink is gold-plated stainless steel, the gold plating can chip off, especially in hot and humid climates where the sink comes into contact with more sweat.
Chemical Reaction: Certain chemicals can cause discoloration on stainless steel. For example, if your sink has been in contact with harsh cleaning agents or certain types of food, it could cause a reaction that changes the color of the steel.
If you’re looking to restore the original color of your sink, you might try a paste made from club soda, vinegar, a bleach-free powder cleaner, and metal polish. However, it’s always a good idea to test any cleaning solution on a small, hidden area first to ensure it doesn’t cause further discoloration. If you’re unsure, it might be best to consult with a professional.
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