Silver Turned Black After Hot Springs? Does Toothpaste Work?

Silver jewelry or swimsuit clasps turning black after soaking? It's a chemical reaction with sulfur in hot springs. Here's how to fix it and whether toothpaste is a safe solution.

Why It Happens

Sulfur-rich springs react with silver, forming black tarnish (silver sulfide). It’s common for:

• Necklaces, earrings, rings

• Swimsuit clasps with silver alloy

• Silver-fiber fabrics

Cleaning Method 1: Toothpaste (for light tarnish)

Use mild white toothpaste (no beads/whiteners):

1. Apply with cotton swab

2. Gently rub affected area

3. Rinse and dry

Avoid on gemstone, faux leather, silver fabric

Cleaning Method 2: Silver Cleaner

Soak silver briefly or use a polishing cloth. Best for severe tarnish. Avoid on fabrics or non-metal items.

For Swimsuit Clasps

• Spot clean only, avoid spreading on fabric

• If minor, accept as natural patina

• If unsightly, consider replacing the hardware

Prevention Tips

• Remove silver before soaking

• Choose non-metal swimwear fasteners

• Store jewelry in anti-tarnish bags