What is the role of the hydrolipidic film?

The hydrolipidic film is a thin, invisible layer that covers the surface of our skin, playing a crucial role in its protection and hydration. Located on the surface of the stratum corneum, this natural barrier is composed of sebum (oily phase) and sweat (aqueous phase), produced respectively by the sebaceous glands and sweat glands. Here is a detailed overview of its functions, importance, and how it can be affected by various factors.

 

Composition and Function of the Hydrolipidic Film

The skin is made up of several layers, with the stratum corneum being the outermost. The hydrolipidic film is located on the surface of this layer, forming a protective barrier. It consists of two main phases:

  • The oily phase: This phase is primarily composed of sebum, a fatty substance produced by the sebaceous glands. Sebum gives the hydrolipidic film its moisturizing and lubricating properties, preventing the skin from drying out.
  • The aqueous phase: This phase is composed of sweat, produced by the sweat glands, as well as water-soluble components like amino acids. This phase helps maintain skin hydration and contributes to a slightly acidic pH (around 5.5), which is essential for protection against pathogenic microorganisms.

Main Functions of the Hydrolipidic Film

1. Protection against external aggressions

The hydrolipidic film forms a barrier that protects the skin against environmental aggressors such as pollution, bacteria, viruses, and fungi. The skin's slightly acidic pH (around 5.5), maintained by this film, inhibits the growth of many pathogenic microorganisms, thereby helping to prevent skin infections.

2. Skin Hydration

One of the essential functions of the hydrolipidic film is to prevent excessive water loss from the skin by forming an occlusive layer. This layer limits water evaporation from the skin's surface, thereby maintaining its hydration, softness, and suppleness.

3. Regulation of Sebum and Sweat

The hydrolipidic film helps regulate sebum production by the sebaceous glands and sweat production by the sweat glands. This regulation is important for maintaining an optimal balance of skin hydration and protection according to environmental and physiological needs.

4. Maintenance of Microbiological Balance

By maintaining an acidic pH and providing a stable environment, the hydrolipidic film helps balance the skin's natural microbial flora. This balance is crucial for protection against pathogens and for preventing skin problems such as infections and inflammations.

5. Support for Skin Barrier Function

The hydrolipidic film works in synergy with the stratum corneum, the outermost layer of the epidermis, composed of dead cells and lipids. Together, they form an effective physical and chemical barrier that protects against external aggressions and helps retain moisture within the skin.

6. Prevention of Irritations

By forming a protective layer, the hydrolipidic film helps reduce the skin's sensitivity to external irritants such as chemicals, detergents, and extreme weather conditions. This helps prevent irritations and allergic reactions.

7. Skin Lubrication

The oily part of the hydrolipidic film, mainly made up of sebum, provides natural lubrication that stops the skin from becoming dry and rough. This lubrication is crucial for keeping skin smooth and pleasant to the touch.

 

 

Factors Affecting the Hydrolipidic Film

The hydrolipidic film can be damaged by various factors, leading to skin problems:

  • Inappropriate Skincare: Using the wrong skincare products, such as harsh cleansers or exfoliating too often, can disrupt the hydrolipidic film, leading to dry, irritated skin that's more prone to infections.
  • Age: As we age, sebum production decreases, making skin drier and less able to hold onto moisture.
  • Nutrient-Deficient Diet: A diet lacking essential nutrients, like omega-3 fatty acids, can impact the quality and amount of sebum produced, thereby weakening the hydrolipidic film.
  • Environmental Conditions: Extreme weather conditions, such as intense cold or excessive heat, can alter the composition and integrity of the hydrolipidic film.

How to Maintain a Healthy Hydrolipidic Film

For the hydrolipidic film to function properly, it's important to follow a suitable beauty routine:

  • Use Gentle Cleansers: Choose cleansing products that respect the skin's natural pH and don't dry it out. Cleansers with probiotics are ideal.
  • Moisturize Regularly: Apply moisturizers with nourishing ingredients, such as essential fatty acids and ceramides, to strengthen the skin's barrier.
  • Protect Your Skin: Use sun protection products to prevent UV damage, which can degrade the hydrolipidic film.
  • Adopt a Balanced Diet: Eat foods rich in essential skin nutrients, such as vitamins, minerals, and omega-3 fatty acids, to support sebum production and overall skin health.

 

 

The Benefits of Biomimetic and Adaptive Cosmetics for Maintaining a Healthy Hydrolipidic Film

Biomimetic cosmetics aim to mimic the skin's natural biological structures and functions. By using ingredients and formulas that closely resemble compounds naturally found in the skin, our skincare products can better integrate with and support skin mechanisms.

Benefits for the Hydrolipidic Film from VIBRE Skincare

  • Mimicking Natural Lipids:

Biomimetic formulas contain lipids similar to those found in the skin, such as ceramides, fatty acids, and cholesterols. These lipids help restore and strengthen the hydrolipidic barrier by filling the gaps between cells in the outermost skin layer.

  • Optimal Hydration:

Biomimetic products use natural humectants like hyaluronic acid and amino acids, which attract and hold water in the skin. This helps maintain hydration and prevent dehydration of the outermost skin layer.

  • Skin Compatibility:

Since these products mimic the skin's natural components, they are often better tolerated, reducing the risk of irritation and allergic reactions. This compatibility helps maintain the integrity of the hydrolipidic film without disrupting it.

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