First, because everyone's endocrine and physical conditions are different, some people's sweat contains more acid, some people have less acid, and some people's body fluids have high sulfur content, these are the substances that cause the surface of silver jewelry to turn black, so Everyone wears silver jewelry will produce different results, and some people wear it for half a year and it will look like new.

Second, the sulfur, nitric acid and oxides in the air and other substances (such as eggs, cosmetics) have a certain corrosive effect on silver. When silver jewelry is worn for a long time, the combination of sulfur and silver will form a black silver sulfide film on the surface of the silver jewelry, which starts to appear as some small spots, and then spreads into pieces, forming what is commonly called silver scale, which changes. It becomes black, which affects the surface luster of silver jewelry, and people usually mistake it for discoloration.

Because of these natural properties of silver, silver has a good health care effect, and it can neutralize toxic substances in the human body when worn regularly. Silver ions have a strong bactericidal effect, can eliminate 650 kinds of germs, can be used as a drug testing tool, and are very beneficial to the human body. It can also accelerate wound healing, prevent infection, and purify water and preserve freshness. The ancients said: Wearing silver, health and wealth will accompany you, sooth the five internal organs, calm the mind, stop fear and palpitation, and remove evil spirits. In medicine, it is much more effective for human health than other precious metals.

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