Alloy rings can fade. Alloy in these cases will fade, one is contact with acid and alkali, chemical, washing items; For example, washing dishes, taking a shower, swimming without taking it off, and so on. Second, a few people sweat more, and the acid base in the sweat is high, which is easy to cause the corrosion and fading of the metal. Third, sulfur dioxide in the air causes the jewelry to oxidize and fade.
