What makes hair frizzy? Detailed answer

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What makes hair frizzy? Detailed answer

Big encyclopedia for children and adults

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What makes hair frizzy?

Hair is thin, thread-like growths that grow from the skin. There are different types of hair: thick and thin, long and short, white and colored. They can be straight, wavy and curly. The color and structure of the hair on the head is not the same in different peoples of the world. People in the countries of the East usually have straight hair. Negro hair is curly. And the hair of Caucasians, that is, representatives of the white race, can be different: straight, wavy and curly.

The color, curlyness and thickness of the hair we inherit from our parents. A person is born with hair of a certain structure and color. And in this structure there is something that determines whether the hair will be curly or not. Imagine that you cut across, as if it were tree trunks, two hairs: one straight, the other curly.

Looking at a section of a straight hair under a microscope, you can see that it is round. The cross section of curly hair will be oval or even flattened. The more this flattening, the easier the hair curls and the curlier it looks.

The color of human hair mainly depends on the content of a substance called melanin. Melanin is a pigment, that is, a coloring matter. It enters the hair cells when they form in the bulbs. The content of this substance determines whether the hair will be dark or light. As people age, less and less melanin ends up in the new hair cells. That is why they become gray-haired in old age, and then completely white.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which vertebrate has the largest eyes?

The largest eyeball among all vertebrates belonged to the ichthyosaur, although it was far from the largest animal.

This pangolin, outwardly resembling a tuna or a dolphin up to 15 meters long, dived in search of food to depths of up to 600 meters. He needed huge eyes to see in the twilight of the deep sea.

the ichthyosaur's eye had a diameter of up to 22 centimeters.

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Scientists from Zhejiang University in China conducted numerous experiments with different groups of volunteers. The hypothesis of the researchers was confirmed: the brain is able to block the storage of certain memories, even if a person tried to remember them.

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