If you mean the dark ring/stain around the base of the faucet, it’s usually caused by mineral buildup, rust, soap residue, or mildew.
Try this:
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Clean the area with warm water and dish soap.
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For a white/chalky ring, soak a cloth or paper towel in white vinegar, place it around the faucet base for 15–30 minutes, then scrub gently with an old toothbrush.
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For a stubborn dark stain, make a paste of baking soda + a little water, gently scrub, and rinse.
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Dry thoroughly afterward.
⚠️ If your countertop is marble, granite, natural stone, or another acid-sensitive material, don’t use vinegar—use a stone-safe cleaner instead.
If you can send me a photo of the dark circle, I can tell you what it most likely is and exactly how to remove it without damaging the sink/countertop.
