Why does jewelry make your skin green?

Jewelry can cause skin to turn green primarily due to the presence of copper in certain metal alloys, such as brass or bronze. When these metals come into contact with moisture, sweat, or certain skin products, they can oxidize and form copper salts, which may stain the skin. Additionally, some people may have skin reactions to nickel or other metals in jewelry, contributing to discoloration. To avoid this, opt for higher-quality materials, such as sterling silver or stainless steel.