Why does the skin on my fingers wrinkle after taking a bath for a long time?

I said that there is a phenomenon in this, there is a gap between the epidermis of the hand and the dermis, and over time, the water will invade and loosen it, and in forensic science, there is a kind of "glove appearance".

In other words, if a person is drowned in water, the skin on his hands will fall off like a glove after a long time, and this is the same thing.

There are two theories about this ......

Because water has the effect of relaxing and softening tissues.

Our ** is actually covered with a thin layer of grease, in order to prevent ** from absorbing water directly from the outside. However, when we soak in warm or hot water for about half an hour, this layer of grease will be removed by warm water, so it will begin to absorb water. Our **surface is an epidermal layer, and below the epidermis is the dermis layer; The epidermis is not completely tightly bonded to the dermis, and the epidermis is only tightly bound to the dermis by connective tissue in some areas, but not in others; Therefore, when the epidermis absorbs edema, the binding place is confined and concave; From the outside, the surface of the ** is concave and protruding, like wrinkles.

Since the palms and toes of the hands and feet are the thickest part of the epidermis of the whole body, the phenomenon of wrinkles is obvious. **Other parts of the body should also have this effect, but it is less likely to be detected. If you soak in water for too long, the epidermis absorbs water and swells, so it becomes wrinkled. In the past, some women specialized in washing clothes for others, their hands soaked in water for a long time, and their fingers were often wrinkled, which became an occupational disease (should be said to be a characteristic).

Another way to put it:

Since the concentration of fluid in the body is higher than that of fresh water, when the fingers are immersed in fresh water for a period of time, water will flow into the epidermal cells, and the cells will swell and deform.

On the contrary, since the concentration of fluid in the body is lower than that of seawater, when we swim in the sea, water will flow out of the epidermal cells, and the cells will shrink and deform.

In addition, there are bundles of elastic proteins at the bottom of the skin that are tightly adhered to the epidermal cells, resulting in uneven contraction or swelling of the fingers, resulting in wrinkled skin.

Because the bath time is too long, the water staying on the surface of the ** will evaporate, which will cause temporary dehydration of the body, and the bath time is too long, which will have a certain impact on the body's metabolism, which is a very unhealthy behavior.

In addition, remind friends to use a glass of boiled water before bathing to prevent some water loss.

There are generally cocoons on the hands, and the cocoons are compressed** (labor), and the tips will be wrinkled when soaked for a long time. It will be fine soon after coming out of the water.

We've probably all experienced this, that is, after a long time in the bath, the fingers start to wrinkle.

Under normal circumstances, there will be a layer of grease on the person's **, on the one hand, it plays a lubricating role, and on the other hand, it also protects ** from absorbing too much water directly from the outside. But after soaking in the bath for a long time, this layer of oil is slowly washed off, and at this time, ** will begin to absorb water. As for why the fingers are more likely to occur, it is because there is not as much oil on the hands as in other places, and there is not much subcutaneous fat on the hands.

Of course, there has been another version lately. Some researchers have found that if the nerves in the hand are damaged, soaking** will not wrinkle. It is speculated that this may be due to a change in electrolyte balance caused by soaking in water, resulting in constriction of blood vessels and a decrease in blood flow, which makes ** become relaxed.

Researchers believe that this reaction may be caused by the increase in friction when people move in the water, so that they can easily grasp the shore without slipping.

After the fingers are soaked in water for a long time, they will absorb a lot of water and become loose, so folds will be formed. These folds are in fact the contraction of blood vessels in response to water, which is a response controlled by the body's sympathetic nervous system.

There is more subcutaneous fat elsewhere on the body, and even if the folds occur, the fat will stretch the folds open, while the subcutaneous fat on the hands is relatively small, so the folds are preserved.

After soaking in water for a long time, your fingers will wrinkle, which is caused by water absorption. Human ** is divided into epidermis, dermis and subcutaneous tissues and other parts, and the phenomenon of water absorption is generally believed to occur in the epidermis.

There are now two main explanations for the principle of water absorption:

1. The theory of semi-permeable membrane, that is, the cell membrane has the characteristics of semi-permeable membrane. The keratinocytes in the epidermis maintain this property although they are "dead cells", allowing water to flow from the side of low concentration to the side of high concentration. The fluid in the cells is the one with the higher concentration of bath water or swimming pool water, so it will absorb water inward.

Second, the theory of capillary action, that is, the liquid on the inside of the tubular object, due to the difference between its surface tension (cohesion) and adhesion, and the phenomenon of overcoming gravity, paper towels, sponges, etc. can lead a small amount of water upwards through capillary action, and there are a large number of proteins in keratinocytes.

The theory is that proteins have a capillary effect on water, drawing water from the outside of the cell into the cell. Eventually, the cells that absorb water begin to swell.

However, there are not only keratinocytes in the stratum corneum, but also thin sheets of lipids between the cells, which block the passage of water. Therefore, the degree of expansion of the outer layer of cells soaked in water must be greater than that of the inside, and the cells squeeze each other, and when the space is insufficient, they will naturally wrinkle.

After soaking in water for a long time, the fingers will be wrinkled, and the nerves will cause the diameter of the fingertip blood vessels to decrease, and the ** surface area will remain unchanged at this time, so the fingers will appear furrowed.

In 2011, American scientists proposed that this process is actually controlled by the nervous system. When the finger is soaked in water for a long time, the nerve will cause the diameter of the fingertip blood vessel to decrease, and the ** surface area will not change, so the finger will appear furrowed. Scientists can't help but wonder if this is consistent with the principle of car tires, which is that grooves can improve the adhesion of human fingers on wet surfaces.

To do this, British researchers conducted an experiment: 20 volunteers were asked to pick up 39 glass balls and 6 sinkers with their right hands, pass them through a small hole, and then pick them up with their left hand and put them into new boxes one by one.

The experiments were conducted on a table or in a water tank, and the volunteers either dried their hands or soaked their hands in 40 minutes of water for 30 minutes, with their fingers wrinkled. The results showed no difference in the performance of the experimenters when picking up the dry glass balls, but when picking up the wet glass balls, the task was completed with wrinkled hands compared to dry hands with an average of 12% less time.

In daily life, when many people wash clothes, they often choose to wash them by hand because of their funds, and how to wash them by hand for a long time will keep their fingers in clean water for a long time. You will find that your fingers will be wrinkled after being soaked in water for a long time. What causes human fingers to become wrinkled after soaking in water for a long time?

1. **Cells absorb water and swell

This may be due to the fact that the epidermal cells of the body leaf absorb water and swell for too long a soaking time, because the cytoplasm has the characteristics of a semi-permeable membrane. If the soaking time is normally too long, water will flow from the lower concentration side to the higher concentration side. Keratinocytes contain more proteins, which have a certain effect on people, just like a sponge absorbs water.

It may digest and absorb a lot of water, and it can also cause wrinkles. When the cuticle of the finger is very thin, it is easy to cause such folds when soaked in water.

2. Wrinkled fingers are not a bad thing

Is it a bad thing for fingers to wrinkle after being in clear water for a long time? Actually, this is not a wrong thing for some people whose fingers wrinkle after a long time in clear water. Some studies have shown that for some patients with intermediate nerve spasm, no matter how long they usually spend in clean water, the skin will not wrinkle, and the nerve cells from the thumb to the middle thumb will be damaged one after another, and the wrinkle problem will not appear.

3. Wrinkled fingers indicate that the nervous system is good

In what daily life, if you soak in water for a long time, the ** of the finger is also wrinkled, which means that the nervous system of the finger is normal and has not been damaged. This is also a normal main performance, and there is no need to worry too much. If the skin is too thick and hard, such as the heels, this will not happen.

Therefore, this condition is usually caused by prolonged immersion in water. Therefore, in daily life, there is no need to worry too much about such things, this is also a very common phenomenon, there is nothing wrong with the human body, as long as it is out of the water for a long time, the skin will gradually repair.

This is a normal physiological phenomenon, the fingers are soaked in water for a long time, the stratum corneum will become soft and thick, the local surface area will increase, and then there will be a lot of wrinkles.

This is because of the cause of water, which is directly related to the stratum corneum.

**The stratum corneum will soften after absorbing water, and then it will also thicken, and it will form a wrinkled situation.