If the silver jewelry you are wearing has been oxidized to black, you can use the following methods: 1 Soak them in silver washing water. Rinse it with clean water after soaking, and it will look brand-new. Silver washing water can be bought in jewelry stores or counters, and of course our lovely Taobao. However, it must be noted that silver washing water is corrosive and easy to damage the silver jewelry itself, so don't soak it for too long. 2. Use silver cloth. If the surface of silver jewelry is bright, it can be wiped with a silver cloth. Silver wiping cloth itself contains silver maintenance ingredients, which can be used many times. But if it is foggy or treated with silver sulfide, it must not be wiped, and it can be washed with silver washing water. Silver with good material is light brown after oxidation and shines when rubbed. Use toothpaste. You can rub it gently with a soft brush dipped in toothpaste, and it will also be shiny. But after washing, dry it with cotton cloth and put it in a jewelry box. Send it to the counter. You can send it to the merchants and ask them to help clean it. 5.diy protective film. For silver ornaments without surface treatment, we can make a protective film by ourselves in a simple way. The method is: after cleaning (all the above three methods can be used), dry it and apply a layer of transparent nail polish evenly and thinly on the jewelry. Be careful not to leave fingerprints when smearing, it will be ugly, and put it in a ventilated place to dry naturally, so as to ensure that the silver jewelry will remain bright for a long time. It's simple.