Why is there a natural blonde hair?

Hair color is determined by melanin. If the melanin contained in the hair cortex is distributed in a solution state, and there are a lot of melanin in the solution, the hair will appear golden yellow. On the contrary, the more granular melanin, the darker the hair will be. If the medulla of hair also contains melanin, then the color of hair is darker.

Blonde hair is the most common among Nordic aborigines, including the southern Baltic Sea and the polar circle (periodic darkness makes people in this area and around the concentric circle have the lightest hair color), and the residents in these two areas have less pigmentation in their hair and eyes. 16 In the 20th century, Europeans immigrated to the New World, which made blond hair appear in America, Australia, New Zealand and South Africa.

Extended data

Common hair colors are black, golden yellow, brown and red. When people get old, their hair usually turns silvery white. Due to different races and regions, hair is black, golden, reddish brown, reddish brown, yellow, gray, and even green and red.

Scientific research has proved that the color of hair is related to the difference of metal elements contained in hair. Black hair contains equal amounts of copper, iron and melanin. When the content of nickel increases, it will turn gray.

Blonde hair contains titanium, reddish-brown hair contains molybdenum, reddish-brown hair contains cobalt besides copper and iron, and green hair contains too much copper. In some African countries, some children have red hair, which is caused by the serious shortage of protein.

People's hair is not only colorful, but also different in shape. In anthropology, it is mainly divided into three types, and each type is divided into several subtypes:

One is straight hair, including hard straight hair, straight hair and microwave hair;

The second is wave hair, including wide wave hair, narrow wave hair and curly wave hair;

The third kind is curly hair, including fine curly hair, loose curly hair, tight curly hair, loose spiral hair and tight spiral hair. The latter two subtypes of curly hair, loose spiral hair and tight spiral hair, are often intertwined in clusters, so that the scalp between small clusters is exposed. So some people classify this hairstyle as hair.

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