1, the necklace is not very malnourished. You can prepare some toothpaste, smear it on the necklace, then brush it gently with a brush and polish it gently to remove the oxidation marks on the necklace. The slight necklace oxidation problem can be eliminated.

2. The oxidized necklace can be put into carbonated cola, and the trace of oxidation on the necklace can be removed by the slight corrosion of carbonic acid. Put the necklace in carbonated cola, soak it for 10 hour, then take it out, and then gently wipe it with cotton cloth, preferably rinse it with clear water. Of course, you can also soak the necklace in silver washing water, but this method is generally not suitable for everyone to operate by themselves.

3. Pour a little white vinegar on a clean towel, then wipe and polish the necklace with a towel, and polish the oxidation marks on the craftsman's necklace. White vinegar has a good effect of cleaning stains, and white vinegar has a good effect. You can try.

4. Electroplating repair. Some necklaces are protected by electroplating. The damage of electroplating layer will lead to the nourishment of the internal material of the necklace. After the necklace is polished or cleaned, the oxidation problem is eliminated, and then the necklace can be electroplated again to repair it.