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Dry skin or dehydrated skin: how to tell the difference?

Dry skin or dehydrated skin? What are the differences?

Do you think dry skin and dehydrated skin are synonyms? And that hydrating and nourishing mean the same thing? Although these two terms sound similar, there are major differences between them. In this article, we provide you with all the information you need to distinguish between dry and dehydrated skin and show you how to care for your skin, whether it's dry or dehydrated.



How to recognize dry skin?

Dry skin isa skin typeoften genetic in origin. Like oily skin, it's therefore impossible to eliminate the specific characteristics of dry skin. It should be noted, however, that dry skin can occur at certain times in life, particularly during pregnancy or menopause. However, in these cases, the skin returns to its normal skin type once the specific circumstance has passed.


What does dry skin need?

Dry skin is the result ofa lack of lipids in the epidermis. This layer on the surface of the skin is made up of cells connected to each other by a lipid cement that maintains cohesion between cells and forms a waterproof protective barrier. In the case of dry skin, this intercellular cement becomes fragile and the cells separate, promoting excessive water evaporation and allowing external pathogens to penetrate. Skincare products tailored to dry skin aim to provide the skin with lipids to restore cohesion between skin cells, thus reestablishing an effective protective barrier function. Our experts recommend using creams rich in lipids such as fatty acids, ceramides, or squalenes, while avoiding harsh cleansing with hot water or products not suited to this skin type.


Characteristics of Dry Skin

Skin is considered dry when the following signs are observed:

  • Afeeling of tightness
  • Atexture rough, with redness, cracks, or patches.
  • Frequent irritation and/or itching.
  • Loss of elasticity.
  • A less radiant complexion. A crocodile skin effect ... temperature.



What about dehydrated skin?

Unlike dry skin, dehydrated skin is onlya temporary condition that can affect all skin types. Indeed, it is entirely possible to have dry or oily skin and be dehydrated at the same time.


What is skin hydration?

Among the skin's various barrier functions, we find the water barrier function, whose role is to maintain skin hydration. To retain water, the skin has several systems present from the surface of the epidermis to the dermis:

  • The hydrolipidic film, a mixture of sweat and sebum.
  • Natural moisturizing factors (NHF), composed of fatty acids and amino acids, among others.
  • Tight junctions, composed of proteins that hold cells together, preventing the passage of water and ensuring the seal tissues.
  • Hyaluronic acid.

With age, the skin becomes dehydrated. There is a decrease in the activity of the sebaceous glands, which produce less sebum, weakening the skin barrier. Corneocytes (the most abundant cells in the epidermis) secrete fewer intercellular lipids, which promotes water evaporation. FNH production also decreases, lowering the hydration level of the stratum corneum. The barrier is also weakened by the decline in the quality of epidermal cell junctions. Finally, at the dermis level, the production of hyaluronic acid, which helps retain water, decreases.


Which hyaluronic acid should you use to moisturize your skin?

When we think of hyaluronic acid, we often tend to believe that this ingredient needs to penetrate deep into the skin to fulfill its role as a natural moisturizer. However, while it's true that hyaluronic acid can retain 1000 times its weight in water,this property won't prevent water from evaporating.

On the contrary, to prevent any evaporation to the surface, the skin's barrier must be strengthened. In these cases, we will therefore use a high molecular weight hyaluronic acid which will remain on the surface and form a protective film against dehydration.

To understand everything about the different types of hyaluronic acid, read the article specially written by our skin experts.


How to recognize dehydrated skin?

Skin dehydration is often linked to external stresses (such as cold, heat, or wind) and internal stresses (such as fatigue, lack of sleep, or stress). Dehydrated skin results in:

  • Adull complexion.
  • Alack of suppleness.
  • Slight tightness.
  • Theappearance of dehydration lines.

These symptoms appear especially after cleansing, in winter, and during periods of high pollution.



How to care for dry or dehydrated skin?

Skin's needs in terms of hydration and nutrition vary from person to person. Combination or oily skin will require lighter skincare products that focus on hydration. Dry skin, on the other hand, will need richer, more comfortable skincare.

Dry skin or dehydrated skin: the skincare you need is not the same

Products for dry skin

If you have dry skin, Applying a nourishing treatment will help rebuild the lipid cement and thus restore the skin barrier.

To this end, our experts recommend our consumers use the GLOBAL-REPAIR range: these anti-aging products have ultra-nourishing textures and no greasy effect. Thanks to the combination of fatty substances such as evening primrose, jojoba, borage, and camellia vegetable oils, they provide advanced nutrition against skin dryness.

Within this range, we invite you to discover the GLOBAL-REPAIR ADVANCED duo. Composed of a global anti-aging day cream and an intensive youth serum, this unique combination incorporates a patented repair complex that mimics the lipid composition of healthy 22-year-old skin. It gives this formula a restorative action on the 10 signs of aging.


Products for dehydrated skin

In the case of dehydrated skin, applying moisturizing products will provide active ingredients capable of retaining water in the skin's layers.

For this, the HYALU-FILLER range is the most suitable. It comes in three exceptional treatments:

  • The serum: it is applied directly after cleansing the face. Its formula combines 5 forms of hyaluronic acid and a botanical extract of Japanese Sophora, rich in antioxidants. It instantly plumps the skin, hydrates it, and protects it from external aggressions.
  • In addition to the serum, the day cream also contains 5 hyaluronic acids. It is intended for dry to normal skin.

Finally, those with oily skin can use the HYDRA-HYAL cream-gel instead of this moisturizer. This mattifying anti-aging solution also ensures a flawless complexion, thanks to an extract of Pistacia lentiscus, which reduces pore size.