Author: Merkurt Stein

This book introduces a lot of knowledge about hair and can meet people's cognitive needs for hair.

The author mainly answers four questions around hair. First, how does hair grow? Second, how to care for hair scientifically? Third, how is a barber made? Fourth, what is the value of hair?

The first question: How does hair grow?

The basic point of hair growth is the hair follicle on the scalp. Whether it is hair follicle cells on human skin or animal hair follicle cells, the growth process is cyclical. This cycle contains three stages.

The first stage is the growth stage. The second stage is the regression stage. The third stage is the dormant period. Different animals have different growth cycles of hair follicles.

There are about 100,000 hair follicle cells on the scalp of a normal adult, and about 50 to 100 hairs will fall out every day. If the hair follicles are infected by fungi or are affected by hormones, it may cause massive hair loss, leading to alopecia areata or baldness.

In order to prevent hair from falling out prematurely or too much, we need to take scientific care of our hair.

The second question: How to care for hair scientifically?

Many factors can affect the health of hair follicles and cause hair loss. There are three common factors.

The first is the impact of bacterial infection. The scalp, like other skin, is easily infected by bacteria or fungi in the environment. Contact with unhygienic pillows or scratching the scalp will allow germs to enter, and over time, it will damage hair follicle cells and cause severe hair loss.

The second influencing factor is mental stress. The greater the mental stress, the more serious the impact on hair follicles.

The third influencing factor is male hormones. Male hormones have an inhibitory effect on the growth of hair follicles. Under the continued stimulation of male hormones, hair follicles will gradually degenerate, leading to a much higher probability of baldness in men than in women.

Understanding these principles, you will also understand how to care for your hair scientifically.

First of all, we must pay attention to personal hygiene, isolate pathogens such as bacteria and fungi, and provide a clean growth environment for hair. Secondly, pay attention to relieving stress and not allowing hair follicles to be disturbed by stress for a long time. The third is to work hard to maintain endocrine stability, quit smoking, limit alcohol, and exercise moderately to create a good hormonal environment for hair follicle cells.

In addition, we must also pay attention to the fact that hair also needs nutrition. Daily care will do the rest.

Daily hair care mainly involves combing, shampooing and dyeing your hair. Don't overdo anything. Over-combing and over-washing your hair will strip the outer cuticle of your hair, thereby affecting your hair quality.

Hair dyeing can easily cause serious damage to your hair. If you want to take good care of your hair, you should try to reduce the number of times you dye your hair. Sometimes not fussing is the best way to protect your hair.

The third question: How is a barber made?

Beautiful hair needs to be taken care of, and when we all often need to find someone else to take care of our hair, the barber appears.

As a formal profession, barber first appeared in the West, formerly a surgeon. With the development of the times, the professional gap between surgeons and barbers has become wider and wider.

Later, each formed a specialized profession. Nowadays, there is often a rotating pillar outside the barber shop as a sign of the barber shop. In fact, the rotating column originally represented bloodletting surgery. Later, surgeons gave up this symbol, but it was inherited by barbers.

In the past, if you wanted to become a barber, you had to go through a tedious apprenticeship. Nowadays, the training process for hairdressers has been relatively standardized, and the overall training time takes about one year.

First use a mannequin wearing a wig to practice your skills, and then practice on volunteers after you become proficient. In addition, you must learn knowledge about physiology and pathology, and master various techniques such as balding, haircutting, shampooing, dyeing, and perming. After completing the required credits, you can become a professional barber.

Question 4: What is the value of hair?

To understand the value of hair, the most intuitive way is to understand the history of wigs. Modern people wear wigs mostly because they have less hair and they don’t look good when bald.

But the ancients wore wigs as a symbol of identity and status. As early as ancient Egypt, the upper class began to wear wigs. They would shave their heads and then wear wigs.

Later, the habit of wearing wigs was introduced to Europe, and the nobles of ancient Greece and Rome were also keen on it, and it became a common practice. Some Roman noblewomen even kept blond slaves to ensure the supply of blond hair.

But wigs can also cause many problems, and some people even suffer from skin diseases because of wearing wigs. Later, the function of wigs gradually became routine.

People choose wigs, sometimes for medical reasons, to cover up their health conditions. Some people wear wigs for religious reasons, and wigs make people look more dignified.

Some people regard wigs as a fashion. Others choose wigs for performance needs, such as film and television actors and circus clowns.

Different groups of people require wigs made of different materials. The best ones use human hair, the medium ones use animal hair, and the lowest ones use synthetic fibers. Even among the finest human hair, quality varies.

The best is Asian hair, which is black, straight, and strong in texture, and is very popular with customers. In comparison, African hair is of the lowest quality. It is not only fragile, but also soft and very unsuitable for styling.

Europeans prefer blonde wigs, but the supply of blonde hair is very short. After all, there are very few blonde beauties, and they are generally unwilling to sell their hair, so vendors often use modified Asian hair instead of blonde hair.

Wigs fully prove the practical function and commercial value of hair. In addition, hair has some unexpected added value, that is, as a souvenir.

Some celebrities’ hair can even be auctioned for hundreds of thousands of dollars, which fully reflects the cultural value attached to hair.

During the European Renaissance, the hair of celebrities was often sold as souvenirs. It was not until the rise of photography that the monumental value of hair artwork continued to decline and eventually disappeared entirely.

In addition, hair also carries important personal information. Now hair has become like a fingerprint, becoming an important helper for the police to solve crimes. Scientists may even be able to solve the mystery of Napoleon's death with the help of his hair.

As technology continues to advance, we may be able to read the entire history of human evolution from hair.

In the future, with the advancement of biotechnology, research on hair follicle cells will completely solve the problem of hair loss. In the future, everyone will have beautiful hair, and robot barbers will cut the most perfect hair for us. hairstyle. We'll definitely have a whole new perspective on hair then.