Why Does Bronze Turn My Finger Green?

Why Does Bronze Turn My Finger Green?

We are big bronze fans in this house because of its buttery gold color and durability. It's a much more affordable metal than gold, and it will last you  a lifetime. That said, some people have issues with bronze because of the green cast it can leave on your finger.

Bronze turning your finger green is a common phenomenon that occurs due to a chemical reaction between the metal and your skin. It doesn't happen to everyone, and the intensity of the green cast depends on your personal skin chemistry. 

What's the Science?

Our bronze is an alloy composed of 80% copper, 15% zinc, and 5% tin. When bronze comes into contact with your skin, especially in the presence of moisture or sweat, the copper in the metal reacts with the acids and salts on your skin. This reaction leads to the formation of copper oxide, which has a characteristic green color.

Factors Influencing the Reaction

Two factors can affect the likelihood and intensity of the green discoloration:

Skin Chemistry: Some people are more prone to this reaction due to higher acidity in their sweat or skin oils.

Environmental Conditions: Humidity, moisture, and exposure to chemicals can accelerate the oxidation process.

Prevention and Solutions

To minimize the chances of bronze turning your finger green, you can try the following:

  1. Clean your jewelry regularly with soap and water, drying it thoroughly afterward.
  2. Remove bronze jewelry when sweating, sleeping, and applying lotions.
  3. Apply a clear nail polish to the inside of the bronze piece to create a barrier between the metal and your skin.
  4. Keep wearing it! Your skin can acclimate to bronze over time.
  5. If none of this works for you, that's okay too! Go for silver or solid gold. 

It's important to note that while you may dislike the green cast, it's generally harmless, not a cause for health concerns, and can be washed off.

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