We are proud to claim that enewton gold jewelry is water resistant! We do recommend avoiding direct contact between your pieces and any harsh chemicals, which can be found in perfumes, cosmetics, and soaps, as they can cause the beautiful finish to darken much more quickly than they should. Gently wiping the product down to remove chemicals from the surface of your pieces is the best approach when caring for your gold-filled jewelry. To clean, simply use a soft cloth with warm water. For a deep clean, our team loves using "Sparkle Bright Products All-Natural Jewelry Cleaner". We cannot guarantee that once a piece has darkened due to exposure that it can be salvaged, which is why it is important to take proper care steps throughout the lifetime of your jewelry so that you can enjoy your special pieces for many years to come!