How to Clean Hard Water Stains From a Sink or Faucet

🌿 Why Vinegar Works Like Magic
Vinegar is a weak acid — but don’t let that fool you.
Its acetic acid content (around 5%) breaks down mineral deposits like calcium carbonate and magnesium hydroxide — the main culprits behind hard water stains.
✅ It’s:

Non-toxic

Cheap

Biodegradable

Already in your pantry

And when used the right way, it’s incredibly powerful.

🧽 What You’ll Need

Distilled white vinegar

The star of the show — do not use apple cider or balsamic

An old cloth, rag, or paper towel

To trap the vinegar against the stain

Green/yellow scrub sponge

The green side gently scrubs without scratching