The reason why 14k gold turns black on fingers is that 14k gold contains other metal impurities, and a high proportion of copper and iron may react with chemicals in human sweat to generate a black oxide. When wearing 14k gold jewelry, fingers will contact with the skin and be affected by sweat, which will lead to oxidation reaction of fingers, leading to black fingers.

Jewelry worn on hands will also react with harmful substances such as hydrogen sulfide in the air, which will accumulate on the surface of jewelry over time, further aggravating the degree of oxidation reaction. This is also one of the main reasons why fingers often turn black when wearing 14k gold ornaments.

Another reason is personal physique and environmental factors. Some people tend to sweat more or their skin tends to get oily, which will increase the probability of oxidation reaction. In humid, sultry or heavily polluted places, it is also easy to cause 14k gold ornaments to turn black.

In order to avoid black fingers, we can take some measures when buying 14k gold jewelry, and we can choose jewelry with high gold content, such as 18k or 24k gold jewelry. To clean and maintain the ornaments on your hands regularly, you can use some cleaners specially used for cleaning metal ornaments to remove dirt and oxides on the metal surface. When wearing 14k gold ring or bracelet, you can try to avoid contact with chemicals, and you don't need to take it off when you sleep, exercise or work.

In order to keep hand skin healthy, it is recommended to use moisturizing hand cream. This product can not only provide moisturizing effect, but also improve the problems of dry, rough and cracked skin. Moisturizing hand cream contains a lot of natural plant essence and vitamin E and other nutrients, which can effectively repair damaged skin, with good absorption and gentleness. Therefore, using hand cream when wearing 14k gold jewelry is also a very effective anti-black method.