Why do foreign whites have blue eyes and yellow eyebrows?

Foreign white people have more titanium in their hair, and their hair is golden yellow. The fundamental reason is that foreign whites live in the cold zone with little sunshine in ancient times and have less melanin in their hair. The eyes of foreign whites are blue, because their iris has less pigment, so their eyes are light blue.

The color of hair is different because it contains different kinds of pigments. Hair contains three kinds of pigments, namely eumelanin, erythromelanin and melanophilia. The colors of these three pigments are different. Because the proportion of the above pigments contained in hair is different, there will be different colors of hair. Because of different races, our human hair can be divided into black, yellow, red and brown.

Because of the different pigment content in iris, the eyes of different races are different in color.