Why is the hair color of China different from that of foreigners?

China people and westerners have different genes, so do their inherited skin types. The color and quality of natural hair are also very different. The root cause of hair color difference lies in human evolution and genetic factors, which is the same as skin color difference. Because yellow people live in sunny tropical and subtropical areas for a long time.

Intense ultraviolet radiation increased the melanin content in the skin and hair of ancestors to protect themselves. In this way, generation after generation, the hair is black. Generally speaking, white people's hair is mostly brown or light yellow; Black hair is mostly dark brown; Yellow people have more black hair, but there are still differences in depth, and light black becomes white hair.