Ceramides: Key components for skin integrity and hydration

Hello Explorers,

Today, we're combining a scientific and practical approach to explore ceramides, the biomolecular lipids that are essential to our skin's health. Often underestimated, they play a crucial role in maintaining the integrity and hydration of our skin barrier.

Ceramides: what are they?

Ceramides are a family of lipids (i.e. fats) naturally present in the horny layer of the epidermis. They make up 40-50% of epidermal lipids, forming with fatty acids, cholesterol and phospholipids a lipid cement essential to skin health.

Vital role of ceramides

  1. Maintenance of the Cutaneous Barrier: Ceramides help maintain the integrity of this barrier, essential for protecting the skin against external aggressions.
  2. Moisture and elasticity: Ceramides play a crucial role in regulating transepidermal water loss (TEWL), preserving the skin's moisture and elasticity.

Consequences of Ceramide Deficiency

A lack of ceramides can lead to skin dryness, increased sensitivity, itching, and sometimes conditions such as eczema or atopic dermatitis. This alteration of the skin barrier leaves the skin vulnerable to irritation and infection.

Ceramides in Cosmetics

Ceramide-enriched products can :

  • Repairing the Skin Barrier: By restoring the integrity of the skin barrier, these products help reduce signs of dryness and irritation.
  • Optimize Hydration: They reinforce the skin's ability to retain water, improving hydration and elasticity.

Integrating Ceramides into Skin Care

  1. Choice of Enriched Products: Opt for creams, serums and cleansers containing ceramides.
  2. Diet and Ceramide Synthesis: A diet rich in essential fatty acids promotes the natural production of ceramides.
  3. Preventing Ceramide Depletion: Limit external factors such as harsh soaps and excessive hot water, which can reduce ceramide levels.


Ceramides are much more than just a moisturizing ingredient; they are essential for maintaining skin health and beauty. Understanding their role and incorporating ceramide-enriched products into your skincare routine can significantly transform the condition of your skin.

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