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No more moisture loss!

The Biologique Recherche Sérum T.E.W.L. rapidly locks in moisture and maintains nourishing lipids by creating a protective film on the skin's surface.

This nurturing serum is made up of a unique combination of ingredients such as mink fat, phytosterols and raspberry seed oil, which allow the skin to be deeply replenished and nourished.

Your skin will immediately feel comforted, protected, plump and deeply moisturised.

Skin Instants®

Dry and Dehydrated Skin Instants®.

Active Ingredients

  • Lipidic Agents: Phytosterols, Cholesterol Sulphate, Mink Fat.
  • Protective Agents: Sea Buckhorn, Berry and Seed Oil Extract, Barbary Fig Extract and Jojoba Oil, Sesame oil.
  • Repairing Agents: Raspberry Seed Oil Extract, Cranberry Oil.


  • Helps restore the lipidic barrier
  • Improves the skin's defence system
  • Helps maintain lipids and replenish
  • Procures an immediate sensation of comfort
  • Protects the skin against extreme cold and low air moisture conditions
  • Diminishes the appearance of dehydration fine lines

How To Use

Apply a few drops of Sérum T. E. W. L. after Crème Dermo-RL or any other cream all over the face, neck or décolleté and massage with fingertips until fully absorbed by the skin. Use two to three times a week, every morning and/or evening, over the entire course of a single epidermal renewal cycle (about 28 days). In case of prolonged exposure to unfavourable, cold and dry climatic conditions, or when the epidermis is very dehydrated, apply Sérum T. E. W. L.