The following is the related information provided by OL Jewelry Network for your reference, hoping to solve the related problems for you. OL Jewelry Network is the first company in China to focus on office women's jewelry, diamonds, diamond rings, wedding rings and diamond rings. Half cheaper than traditional jewelry stores, Italian designers customize personalized jewelry for you, which is worth the money and luxury is no longer expensive. Many people find gold jewelry discolored or faded after wearing it for a period of time. What is the reason? The discoloration or fading of gold jewelry is closely related to human sweating. 99% of human sweat is water, and 1% is wastes and harmful substances in human body, such as chlorinated substances, lactic acid, urea ammonia, etc. When these substances come into contact with silver and copper in gold jewelry, chemical reactions will occur, such as silver chloride and copper sulfide, and dark black chemical salts will appear. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very clear black spots on the skin. If cosmetics are smeared on the skin wearing gold jewelry, it will undoubtedly provide an opportunity for cosmetics containing chemical substances and gold jewelry that is most afraid of chemical corrosion, and the consequences can be imagined. Some cosmetics also contain some fine hard particles, which can form another kind of dirt and then wear gold jewelry. Regional factors will also make gold jewelry lose its bright luster. For example, in dry areas, the air contains a lot of primary fine dust, which will form a kind of "body sandpaper" after being polluted by human body, which can grind gold jewelry into extremely fine debris and present some black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will dwarf the gold jewelry mentioned above.