Skin structure: how it works and what it is composed of

skin structure

In this article we will try to explain in a simple and straightforward way what the structure of the skin is and what its essential functions are. In addition to being one of the most stressed organs in our body, the skin is also one of the most frequently changing elements. Indeed, on closer inspection, it is fair to say that the skin is the most dynamic organ, capable of constant change in its three main layers. In order to share more awareness of its properties and functions, we will explain its composition and functions.


Skin structure, how its three layers are organized

Let’s start with the structure of the skin. The skin is organized into three main layers (epidermis, dermis and subcutis), each of which is in turn characterized by other sub-layers. To this already rather complex system, one must then add the skin’s appendages such as the hair follicles and the sebaceous and sweat glands, which play a very important role in ensuring the overall proper functioning of this organ.


In this in-depth look at the structure of the skin, we have already recalled how theepidermis is the most superficial layer of the skin and, as such, is what we can touch, treat, and mistreat every day.

His role is really critical. It is the epidermis, in fact, that protects us from toxins, batteries and fluid leaks. Seamlessly operating within it are cells that live a rather dynamic life, making themselves the protagonists of a process of keratinization that leads them to move and mature.


At a lower level than the epidermis, however, we find the dermis, or chorios. This is the elastic and compact middle layer of the skin, composed of a reticular layer and a papillary layer.

The main components of the dermis are quite well-known, and well known to all women who have experience with buying creams, serums and other skin wellness solutions: collagen and elastin, or those elements that are able to give strength and flexibility to the skin, characterizing its healthy and shiny, youthful and even appearance.


Descending to lower levels in the skin layers we then find the subcutis, or hypodermis. As can be guessed, this is the innermost layer of the skin, which can isolate this organ from the rest of the body. It is composed of fat cells, collagen fibers and blood vessels.

Skin function: what is it for?

From the above lines it should be quite clear what the purposes of this very important body are.

For the sake of greater clarity, however, we wanted to summarize the most important ones below:

  • protects our bodies from cold, heat, fluid loss and solar radiation
  • Is the first layer of defense, protecting muscle tissue and fibrous tissue from pressure, blows, and abrasions
  • the hydrolipid film and protective acid mantle protect our bodies from the aggression of potential chemicals
  • the stratum corneum of the epidermis is also critical in repelling the attack of bacteria and viruses
  • regulates body temperature (we sweat when cooling is needed, contracting the dermal vascular system to conserve heat)
  • We intercept environmental sensations through nerve endings
  • Regenerates wounds through a healing process.

In short, as is well evident, with such a complex structure and continuous renewal, the skin constitutes an essential organ for our well-being.

If you would like to learn more about how it works, please check out some of our most recent articles on the subject, with an in-depth look at what dermocosmetics is all about, and how you canimprove the skin on your face .

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