Oxidation, corrosion, excessive amount of dirt.
Oxidation effect: The silver bracelet turned black when worn, possibly due to oxidation reaction. Due to the active nature of silver, it is prone to oxidation reactions with air, resulting in the production of black silver oxide, leading to the blackening of silver bracelets.
Corrosive effect: The silver bracelet turned black when worn, possibly due to the corrosive effect. Because silver bracelets will gradually turn yellow on the surface after being corroded by external substances such as sweat, sulfides, and carbon monoxide, until they eventually turn black.
Excessive material: The silver bracelet turns black when worn, possibly due to the accumulation of excessive surface stains. Because when people wear silver bracelets, the oil, sweat, and other stains secreted by the human body will stain the surface, and over time, the silver bracelet will naturally turn black.
What to do when the silver bracelet turns black:
Alkali cleaning: When silver bracelets turn black, they can be cleaned with alkali. The main component in the alkali is sodium carbonate, which can remove black impurities from the bracelet. You can take an appropriate amount of alkaline dough and put it into a container filled with water. After the alkaline dough melts, soak the silver bracelet in water for 20-30 minutes, and then take it out and dry it with a cotton cloth.
Toothpaste: Silver bracelets can also be cleaned with toothpaste if they turn black, and the calcium carbonate particles in the toothpaste can dilute black impurities. First, wipe the surface of the bracelet with a damp tissue, then apply an appropriate amount of toothpaste to the soft bristle brush, and then brush the blackened area. After brushing, rinse off the toothpaste on the surface of the bracelet.
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