That faint green ring a necklace or ring leaves behind isn't a sign something's wrong with you — it's the metal. Here's what actually causes it, and the simplest ways to stop jewelry turning your skin green.
Bought gold jewelry that went dull or green in weeks? Gold-plated stainless steel is genuinely different. Here's how long it really lasts, whether you can shower in it, and the simple habits that keep it looking new.