What should I do if I bought the gold white gold yellow gold in Lao Fengxiang a few days ago?

Don't worry, you can go to the store to find the clerk to clean you.
First of all, gold will not be oxidized in room temperature.
This black is due to the mercury in the cosmetics, or the sulfur in the air has a chemical reaction.
At the same time, gold jewelry may also be white.
It Duo Jewelry learned that gold jewelry contains gold. When gold encounters mercury, it will respond to each other to generate a "gold -mercury agent", that is, it becomes "golden mercury alloy", and the color is white. There are many types of cosmetics nowadays. Some cosmetics contain trace mercury. When using cosmetics, accidentally encounter gold jewelry, which will turn white and generate "golden mercury alloy". It contains trace lead, and gold encounters lead capacity. Especially in the summer, the sunscreen whitening creams commonly used by ladies in the summer are extremely high, and the most likely to cause this phenomenon.
For the above two gold jewelry that has been turned white and black, it can be heated with the gasoline spray wheels used for jewelry processing, because the melting point of mercury and lead is very low. Gold jewelry restored. Of course, it is best not to wear gold jewelry when applying cosmetics or dyeing to avoid post -troubles.