Under normal circumstances, how many years does hair usually sit on the top of the head?

For many people, how to choose the right shampoo has always been a headache. For the many shampoo brands on the market, many people are constantly trying to choose shampoos, but few products are truly satisfying. First of all, the most important thing is to figure out the health of our hair and scalp, and figure out what function of shampoo our hair needs, and then we will choose the shampoo.

It is recommended to use Yunnan Baiyao Yangyuanqing Shampoo, the active ingredients of Yunnan Baiyao and the essence of Yunnan Baiyao Chinese medicine added to Yangyuanqing Shampoo can promote scalp microcirculation, which stems from the destruction of the scalp ecological environment, and is closely related to the health status of the whole body, and scalp health needs to be systematic, comprehensive and scientific management and maintenance.

<> hair roots dry up, or hair collapses; The second is that the spleen and stomach are damp and hot, the spleen is weak and weak, coupled with the fat and sweet taste of wanton food, which hurts the stomach and damages the spleen, resulting in the dampness and heat steaming to the top, eroding the hair roots, and the hair roots are gradually corroded, and the hair is sticky and falling out.

Normally the same. Why do men feel that the two sides grow fast, because the hair on the top of the head will follow the direction when it grows, you can't feel it, the two sides will be next to the ears if they are a little longer, there is no length, and it can't be followed, which makes people very uncomfortable. Hair grows in different directions.

The distance from the eyebrows of normal people to the top of the head is generally about 5 cm, the specific situation is determined according to the different circumstances of each person, some people may have a hairline behind, some people have a hairline in front, if the hairline is behind it can be modified by a hair transplant, you can also use some hair growth shampoo to nourish the scalp, usually pay attention to the care of the scalp and the cleanliness of the scalp.

It acts on the hair follicles to shrink the hair follicles, and the hair follicles in the terminal phase are transformed into vellus hair follicles, so that the number of hair in the anagen phase decreases, and the proportion of telogen hair in the short-term survival increases, so that the hair on the top of the head gradually becomes scarce.

Because even a slight injury and infection will affect the function, emotion, and perception of the human brain, thus determining whether the human can survive well. Hair reduces the impact force on the skull to a certain extent, such as a hail of fruit hitting the head, or the top of a cave that is easy to hit.

This is the principle of "use in advance, waste and retreat", and it is also the category of molecular system generation in evolutionary theory. There are also two parts of the human body that have hair left in it, mainly to prevent friction and play a protective role, which is also the perfection of evolution. Regarding hair, I think the main function is to keep warm, and the continuous growth of hair protects the head, so human beings seem to inadvertently evolve into our dominant genes.

Why did humans evolve to keep hair to this day? I think that human feet and hands have to work constantly to survive, and they use what they have not been able to use because of the continuous evolution from generation to generation. You see acrobats who often practice with their heads, and martial arts athletes who practice with their heads on their heads, their hair will also wear out.

Generally, the hair production cycle on the top of the head is as long as two years, and the number of survivors can reach 200,000 heels. However, if the head is oily**, or if you stay up too late, the production cycle may be reduced, to only 1 year.

Generally, you can stay for about a year, and then it will fall out and grow new hair again, so hair, like cells, is also in accordance with the laws of nature.