Remove Hard Water Stains from Shower Glass

Hard water stains are mineral deposits (calcium and magnesium) that etch into glass over time. The longer they sit, the harder they are to remove. Fix path: household acids → abrasives → prevention.

Method 1: White Vinegar (Best First Try)

1. Heat white vinegar in microwave for 30-60 seconds (makes it more effective)
2. Spray generously on glass, saturating all stains
3. Let sit 15-30 minutes (or longer for severe buildup)
4. Scrub with non-scratch sponge in circular motions
5. Rinse thoroughly with water
6. Dry completely with squeegee or microfiber cloth

For stubborn stains: Soak paper towels in hot vinegar, press them against the glass, leave for 1-2 hours. The prolonged contact breaks down thicker deposits.

Method 2: Baking Soda Paste (For Heavier Buildup)

1. Mix baking soda with a little water to form thick paste
2. Apply to stains after vinegar treatment
3. Scrub gently with sponge — the mild abrasive lifts残stubborn minerals
4. Rinse and dry completely

Method 3: Commercial Lime/Calcium Remover (Nuclear Option)

If vinegar fails after 2-3 attempts, use CLR or Bar Keepers Friend. Follow label directions exactly — these are stronger acids. Always test in small corner first.

Prevention (Critical)

• Squeegee after every shower — takes 15 seconds, prevents 95% of buildup
• Apply Rain-X or similar water repellent every 2-3 months — water beads off instead of sitting
• Ventilate bathroom (fan or window) to reduce humidity

Pro tip: If stains won't budge after vinegar + baking soda, they may be soap scum mixed with minerals. Add a few drops of dish soap to your vinegar — it cuts through the soap layer so acid can reach minerals underneath. For truly severe etching (feels rough to touch), you may need a professional glass restoration service with specialized polishing compounds.