Biologique Recherche


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Biologique Recherche Sérum T.E.W.L. is formulated with an ultra-high concentration of precious lipid-replenishing, repairing and protective oils. The combined action of its active ingredients restores a strong cutaneous barrier and strengthens the hydrolipidic film so skin is better able to shield itself from external aggressions. The serum’s formula envelops skin like an epidermal shield, providing intense nourishment and supreme comfort. Once repaired and protected, the epidermis maintains an optimal level of hydration.  Recommended for Skin Instants© that are very dry, sun damaged, lacking in lipids and nutrients.


  • Helps restore a high-quality cutaneous barrier in order to improve the skin's defense system.
  • Creates a protective film that helps maintain lipids on the skin's surface and throughout the extracellular environment (cement surrounding the epidermal cells).
  • Reverses the skin's deficiency in fats.
  • Procures a sensation of comfort immediately after application and throughout the day.
  • Protects the skin against extreme cold and low air moisture conditions.
  • A serum to compensate for lipid deficiencies.
  • An extremely active treatment, it revitalises and regenerates the skin.
  • It is ideal for eliminating sensations of tightness and attenuating the appearance of fine lines associated with the skin's superficial dehydration.
  • A genuine lipidic shield.
  • Don't use on seborrheic skin.

After using Crème Dermo-RL or another creme, apply 4 drops instead of the usual Finishing Serum to the entire face and neck and massage in with fingertips until completely absorbed.

As an intensive treatment: 2 to 3 times a week, morning and/or night, for about 28 days.

As a maintenance treatment:  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.

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