Published May 18, 2023

The skin is our first line of defense against external aggressions such as pollution, UV rays, and chemicals. Its protective characteristics can also be altered by stress, smoking, or an unbalanced diet. With our current lifestyles, even with the best will in the world, it is impossible to be completely safe from these external factors. It is therefore no coincidence that our skin is the first organ to suffer from aging.

Knowing the structure of your skin means knowing how to protect and care for it. It also means getting to the heart of our expertise at FILORGA. Thanks to this article, your skin will no longer hold any secrets for you: you will understand how the skin lives and regenerates itself and how our products will help you keep your skin young, smooth, and radiant.


The skin is a vital organ that protects us while allowing us to exchange with the environment. The three layers that form the structure of the skin have different, but complementary functions.

The structure of the skin: getting to know it better thanks to Filorga's expertise


This is the external layer of the skin, the first shield against external aggressions. It is primarily made up of keratinocytes, tightly packed cells that produce keratin.

The epidermis renews itself completely every month. The keratinocytes migrate to the surface of the epidermis and mutate into corneocytes which then form an impermeable and resistant layer called the stratum corneum. Corneocytes are dead cells, but they remain bound together by a cement made of lipids. It is - among other things - to nourish this lipidic cement that our moisturizing creams integrate fatty compounds.

Melanocytes, the cells that synthesize melanin, are also present in the epidermis. They determine the color of the skin and react to UV light during tanning.

Also present in the epidermis are Langerhans cells and Merkel cells. The former are part of our immune system and can detect and neutralize certain foreign bodies. The latter contain nerve endings and are sensitive to pressure. They play an essential role for the sense of touch by allowing us to detect shapes, textures, etc.


Of the three layers that form the structure of the skin, the dermis is the most complex and the most active from a metabolic point of view.

It is crisscrossed by countless blood and lymphatic vessels that supply it with the necessary nutrients and transport immune cells in case of aggression.

The dermis is also made up of cells called fibroblasts, which are bathed in a sort of gel and which secrete four essential macromolecules:

- Collagen, which is resistant to traction.

- Elastin, which brings suppleness to the skin.

- Hyaluronic acid, which acts like a sponge and soaks up water, thus resisting the stresses exerted on the skin.

- Proteoglycans, which participate in communication and adhesion between dermal cells.

These four macromolecules form a three dimensional network that is very resistant to shocks and protects the organs located further down.

But the properties of the dermis are not limited to the action of fibroblasts. It is in fact in the dermis that the skin annexes are born and develop:

- The hair follicles form the hair.

- The sebaceous glands produce sebum, a set of fatty substances which mixed with sweat reinforce the protection of the epidermis. This emulsion is called the hydrolipidic film.

- The sweat glands produce sweat, which is essential for thermoregulation, the body's ability to cool itself.

Finally, it is also in the dermis that the nerve endings sensitive to heat, cold, and pain are located.


The deepest layer of the skin, the hypodermis is composed of fat cells, the adipocytes, which have a variable volume depending on the amount of fat stored there. The hypodermis is therefore an energy reserve tissue, but also a natural insulator against the cold.

Filorga helps you to have beautiful skin


The skin is an organ with multiple functions essential to life, but it is not totally infallible. As with any living body, the properties of the skin decline with age and the effects of aging differ depending on the aspect of the skin being considered. They do not have the same causes either.

Taking all these parameters into account, their origin, their nature, their mechanisms requires real expertise. Expertise such as that which FILORGA has been developing for you for over 40 years.

Now that you have a better understanding of the skin's structure, let's discover the signs of skin aging and the solutions that FILORGA proposes to remedy them.


Wrinkles are the consequences of structural changes that appear in the three layers of the skin:

- The lower layer of the epidermis becomes thinner and more vulnerable to aggression, while at the same time, dead cells (corneocytes) accumulate on the surface and form an increasingly thicker horny layer.

- The fibroblasts of the dermis produce less collagen, elastin, and hyaluronic acid. The dermis loses its properties of firmness and elasticity.

- The volume of fat cells in the hypodermis decreases, which further contributes to skin sagging.

These changes in the structure of the skin are amplified by the movements of the facial muscles which create fractures in the dermis. These are the expression lines.

To prevent and reduce your facial wrinkles, FILORGA is inspired by five aesthetic medicine techniques in our TIME-FILLER line.


Skin that lacks firmness is characterized by sagging and loss of elasticity. Volume changes on the face are visible, such as deeper dark circles, and sagging cheekbones.

The loss of firmness is due to the disorganization of the dermis. As with wrinkles, fibroblasts are no longer able to produce enough structuring and nourishing elements. The loss of firmness also comes from the melting or displacement of the subcutaneous fat layer. Normally, this fat supports the skin, but if it disappears or shifts, the skin drops due to gravity.

In our LIFT, NCEF, and GLOBAL-REPAIR skincare collections, FILORGA offers creams and balms that can be applied according to your needs for loss of firmness.


Dehydrated skin is characterized by a low water content and a reduced capacity to retain it. Telltale signs include tightness, fine lines, and lack of firmness. This sign of skin aging is mainly due to an alteration in the barrier function of the epidermis as well as a decrease in the natural production of hyaluronic acid.

To regenerate dehydrated skin, FILORGA has specially designed the HYDRA skincare collection based on five types of hyaluronic acid that helps plump, smooth, and moisturize skin.


External aggressions and skin aging can lead to an alteration of the barrier function of your skin. You produce less sebum, the lipidic cement of your epidermis becomes less robust and your skin becomes less protective.

So, if you have very dry skin that tends to peel or has a rough texture, it needs to be nourished with specific care products based on lipid-replenishing ingredients. For a global anti-aging care that will fight dehydration and dryness in your epidermis, we recommend GLOBAL-REPAIR products.


It depends on the ability of the skin to reflect light. With age, skin microcirculation slows down, leading to a decrease in the supply of nutrients and oxygen. Skin cell turnover slows down and the dead cells accumulate on the surface. The corneal layer becomes thicker and your complexion loses its radiance.

To regain beautiful skin, FILORGA recommends the use of our SCRUB & MASK. Inspired by peeling techniques, it will allow you to effectively eliminate the layers of dead cells. You can then reoxygenate your skin by applying the OXYGEN-GLOW perfecting skincare and NCEF regenerating treatments.


It is the melanocytes that ensure the pigmentation of the skin. They are located in the epidermis and produce melanin. When you tan, your skin becomes pigmented by producing more melanin. Then, as your skin cells renew themselves, melanin production returns to normal and the skin gradually regains its natural color.

Various factors such as prolonged sun exposure, hormonal changes, pollution, and skin aging can contribute to the appearance of hyperpigmentation spots. These factors can disrupt the normal function of melanocytes, leading to excessive melanin production and the formation of localized pigment deposits. Dark spots on the skin then appear, resulting in a loss of uniformity and luminosity of the complexion.

The SKIN-UNIFY complexion perfecting collection has been specially designed to reduce dark spots on the face and restore the skin's even, luminous appearance.

For over 40 years, thanks to our team of researchers and in close collaboration with renowned doctors and aesthetic surgeons, FILORGA has been using the latest scientific advances to develop increasingly innovative and effective treatments for all signs of skin aging.