How does the beauty instrument work?

Now the market is full of beauty equipment, with various functions (from firming and lifting, anti-bacterial and anti-freckle to whitening and brightening) that make people dizzy and visitors are also full of interest. Many functions of these instruments have been more or less confirmed by clinical trials, so how do they work? This starts with the bioelectricity in the human body. The human body can be seen as a very complex ecosystem. If a person's body is compared to a society, then each cell can be compared to a person in the society. Each person has its own independent function, and these people will form an independent unit (for example, this unit is called "kidney", and that unit is called "liver"). Whether it is between units or between individuals within a unit, there is a need to communicate with each other. This communication is realized by "bioelectricity". The complex bioelectrical system is similar to the Internet between individual cells, realizing the exchange of information.

If a certain part of a country (society) is attacked, what happens to that part (border guards)? They will struggle to resist, while quickly sending messages to other parts: "The situation is urgent, please help!" The skin is the outermost defense system of our body, so it will naturally do the same. The scientists used a knife to cut a wound on the subject's arm and leg (not deep, return the money, don't worry, everyone), and then began to measure the internal communication of the body (can't measure what the cells say, because we I don’t understand cell language), and it is measured that this part of the network is sending signals very anxiously, that is, the current is greatly increased.

After a burst of screaming, reinforcements came. These reinforcements are the "ions" that serve as signal messengers (for example, there are no free "ions" in a spoonful of salt. After throwing this spoonful of salt into water, the "sodium ions" and "chloride ions" in the salt ran out) and "enzymes" as commanders. The role of "ion" is to continue to increase the body's investment in the wound, so hurry up and deliver food and grass. The role of "enzyme" is to direct local personnel and materials to complete the function of fighting against foreign enemies and restoring (in simple terms, this is the case, if it is more complicated, the uncle will be incapable). The scientists found that the significant difference between the young and the old is that the skin of the young is obviously more excited, and the shouting is louder, and the lingering sound is resounding, that is, the voltage is high; the skin of the old is weak, and there is no way to greet To enough reinforcements, that is, the voltage is low. How to help the skin of the elderly? Westerners are simple and crude but direct and effective:power up.

The above is a section about bioelectricity that I have read. According to the above research, it can be reasonably deduced that if a reasonable bioelectric current is applied to a normal skin, it can help the skin obtain better nutrition supply and restore some functions that the skin has lost.