Gold and silver are rare alloy metals, which are relatively stable in chemical properties and not easy to deteriorate. They can maintain their appearance for a long time and are not easy to deform, so they have good ornamental value. At the same time, wearing them on the human body is not easy to cause skin infection and pathological changes due to friction, so people have been using them to make jewelry and wear them directly on the body for a long time. Wearing gold and silver jewelry is a good economic condition and hobby for everyone, which is generally divided into decorative and ostentatious. Specifically, some people can't wear gold and silver jewelry, because gold is a heavy metal, and allergic reactions will occur if they wear it often. For example: 1, the metal necklaces that many people often wear are K gold jewelry. In the manufacturing process, a small amount of other metals such as chromium, nickel and copper are mixed into these metals in proportion. When the weather is hot, human sweat increases, and the moisture in the sweat can dissolve a small amount of nickel sulfate on the surface of simulated jewelry, which will cause allergic reactions after skin absorption, thus inducing skin diseases.

2. Some people with allergies have a stronger reaction. Some people are allergic because of the metal head on the belt and the metal frame on the glasses. The allergic symptoms of these people are manifested in the parts where jewelry comes into contact with the skin, such as ears, neck, wrists and fingers. Some people will have a systemic allergic reaction. First, the skin is red and swollen, and then small papules and blisters begin to appear, and the whole body itches and feels uncomfortable.

3. Zhang Likui, Standardization Technical Committee of China Jewelry Industry Association, said that at present, there is no unified jewelry industry standard in China. There is no scientific definition of the material and function of jewelry. Generally speaking, the performance of pure gold, pure silver or jewelry is stable. When consumers choose jewelry, the most important thing is to compare materials and techniques, and try to choose pure gold or sterling silver jewelry. If you want to wear other jewelry, first of all, you should know whether your skin has allergic reactions according to your own physique, and try to avoid wearing jewelry that is most likely to cause dermatitis, such as gold-plated, silver-plated and nickel-plated. If you feel unwell, stop wearing it immediately and go to the hospital in time.