Many Space Mermaid pieces incorporate sterling silver, which will tarnish over time when exposed to the elements. To slow the oxidation process, you may store your jewelry in a cool, dry place in an airtight plastic bag. Store jewelry away from sunlight, which may cause discoloration or fading. Avoid contact with water, perfume, moisturizer, hair products, chlorine, etc. If you use these products, wait for them to dry before putting on your jewelry. Gently wipe the jewelry clean with a soft cotton cloth after wearing. Do not use solvents or harsh chemicals to clean your jewelry. Please wear with care.