What is the black mud rubbed off in the shower? What does it look like under the microscope of 1000 times?

For a northerner, if you don't take a bath in the bathhouse in winter, then this winter is incomplete. It's not just northerners. Nowadays, many places still keep the habit of taking a bath.

On the surface, people bathe frequently enough, so it is reasonable to say that no dust can attach to the skin, but in fact, black mud is like water in a sponge, and it will always be squeezed. Then the question is coming. What is the black mud we rub down? Is it really good for you to take a bath every day?

What is the black mud on your body?

In the eyes of the older generation, rubbing out black mud means that the human body is dirty, or not taking a bath for a long time, resulting in too much dust on the body. In the eyes of the bath owner, rubbing out black mud is a sign of hard work. If the black mud is not wiped out, the guests must think it is cheating.

Although even the cleanest person will rub mud with a few hard rubs, it is not "mud" but a mixture of external dust, microorganisms on the body surface and products of human metabolism. This layer of material attached to the human body is called sebum membrane.

Sebum membrane is very important to the human body, which can effectively lock the moisture in the skin, prevent excessive evaporation of moisture in the human body, and also prevent the combination of moisture in the human body and external substances from harming the human skin.

Sebum membrane is also the first barrier of human body, which can prevent viruses and bacteria from entering human body. The PH value of sebum membrane is about 4.5-6.5, which is weakly acidic. Weak acid environment can kill some microorganisms and ensure the health of human skin.

Sebum membrane can also nourish skin and keep skin smooth and shiny.

If the sebum membrane of human body is destroyed, the skin will lose its luster, the skin will look worse, and even cause itching, molting and sensitivity.

Since sebum membrane plays such an important role in human body, why take a bath?

In fact, although sebum membrane is more important to us, it is renewable. Sweat and oil are often secreted by sweat glands and dead cells in the human body, and they will also accumulate on the skin surface and supplement the sebum membrane.

This leads to a thick scab on the human body surface if you don't take a bath for a long time, which will not only lead to itching, but also lead to waste blocking pores, resulting in acne or skin diseases. If you don't take a shower, it will smell bad and it is difficult to socialize.

What black mud looks like under a microscope.

Under the microscope, black mud is not as unbearable as we thought, but a substance mixed with rust and iron powder.

Of course, because the multiple is not large enough, this photo does not show mites, viruses, bacteria, fungi and so on in the black mud. But what they look like under the microscope has been photographed.

Mites: Although we don't like mites, everyone carries a certain amount of mites, but we just can't see them. The size of mites is about 0.5 mm, and there are many kinds, up to more than 50,000 species, of which more than 40 species are suitable for human living environment, but only 10 species are related to human health.

Mites mainly feed on our dander, oil and sweat, and widely exist on the surface of human body. No matter how much we hate it, we can't get rid of it.

Viruses: When we talk about viruses, we think that viruses can make people sick, but in fact, viruses are also a big family. Only a few of them can infect people and make them sick, and most of them can live in harmony with human beings.

Viruses are between biological and abiotic. They have to invade other creatures in order to survive, and they invade a wide range of objects. For example, bacteriophages specifically invade bacteria, so modern medicine is prepared to use phage viruses to fight super bacteria.

Bacteria: Like viruses, some bacteria can cause human diseases, some bacteria can live in harmony with humans, and even some bacteria can coexist with humans, such as probiotics in the intestines, which will help us break down food and promote food digestion.

In addition to these microorganisms, there are many oils and dander on the surface of human body, which become a hotbed for nourishing microorganisms and make these microorganisms and parasites move freely on the surface of human body. Although we rub off part of the mud, as long as it is not too frequent and violent, it will not affect our health.