The principle of curling and straightening hair, the principle!

The shape of the hair is one of the traditional bases for ethnographic classification. The length, color, and hairstyle of the hair are all visible to the naked eye and are generally divided into 5 types, namely straight hair, wavy hair, curly hair, woolly curls, and small spiral hair. The hair of yellow people is straight and not curly, long and thick, and the color is black-brown or black, such as Chinese, American Indians, and it is generally believed that the hair of Inuit (Eskimos) is the hardest.

The hair of the black race is dark brown or black wool curls and small spirals, which are short, thick and curly, such as the Negros of Africa, and small spirals are characteristic of the Bushmen and. The hair of the white race is often wavy and curly, ranging in color from grayish-white (Scandinavian) through varying degrees of brown to black (Greek, Southern Italian) and occasionally red; In length, wavy and curly hair are in medium length. The results of the microscopic study show that the differences observed in different hairstyles are related to the differences in features seen to the naked eye.

The cross-section of straight hair is round or nearly round, and the medulla is usually present; The cross-section of woolly and small spiral hair is oval or kidney-shaped, with medulla, which is covered by dense melanin granules; The cross-section of wavy and curly hair is oval, and the medulla is also often present. Although the hair of the Aborigines of Australia is wavy and oval in cross-section, like that of the white race, their hair is always dark brown or black, and thick, like the hair of black and yellow people.

The maximum transverse shape or flattening of the hair shaft is indicated by hair, and the index of straight hair generally varies between 80 and 100; Wave and curly hair variations between 60 and 80; Woolly hair and small spiral hair variation below 60. It is generally believed that the shape of the hair stem is related to the shape of the hair follicle buried in the **, in straight hair, the hair follicle is straight, in wavy hair and curly hair, the hair follicle is slightly curved, and the wool curl and small spiral hair follicle is strongly curved or sabre-shaped. In addition to this, there are other factors that have an impact on the shape of the hair, it is generally believed that the curl seen in the wave hair is caused by the uneven balance between the two sides of the hair rod when it is spread, and the curl of curly, woolly and small spiral hair is caused by the twisting of the lost rod on its long axis, and the degree of curl increases with the degree of twisting.

The cross-section of our normal straight hair is round, while the cross-section of the curly hair is flat, even square, and the hair is rotated when it grows, so the cross-section is round and the hair is the same even if it is rotated, and the hair is naturally straight. The roll is the opposite.

This has nothing to do with the lack of anything in the body.

Both straight and curly hair are genetically defined... If one of the parents is self-rolled, then 25% of the children born are likely to have self-rolled.

And the family that was born to be a self-volume has also changed after a long period of genetic transformation. The same goes for straight hair, in turn.

Both straight and curly hair are genetically defined, depending on whether your parents have that gene or if your parents have straight and curly hair.

It seems that the chromosomes are different!

There's no special effect. Because the volume is innate, it has a certain relationship with genetic factors.

Guidance: It can only be changed artificially, if necessary, you can go to the hairdresser to do a one-time straightening or ion perm, but it is generally not restored to the self-curl after a few months.

How to straighten hair with natural curls, what to do with naturally curly hair.

It used to be a self-curling volume, and when I was in college, I straightened it with all kinds of perms, and when I stayed up late, my hair fell out in various ways, but now my hair is soft, and I am straight.

I used to have a bit of natural curly hair. Later, when I straightened it, the new hair that grew out would still be a little curly, but after repeating it several times (the frequency of perming once a year), the hair is now softer and no longer curly, and I don't know why. Comb your hair and massage your scalp more often, and then keep your hair long.

Because short hair is not heavy enough, it will be curler and fluffier.

Depending on how curly it is, don't tie your hair and it will generally become smoother.

Without this possibility, why not like natural volumes?