Biologique Recherche Sérum T.E.W.L
Biologique Recherche Sérum T.E.W.L
Intense Hydration & Lipid Barrier Repair Serum
Biologique Recherche Sérum T.E.W.L
Biologique Recherche Sérum T.E.W.L
Intense Hydration & Lipid Barrier Repair Serum
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Sérum T.E.W.L. is a face oil, 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.
Key Features
- Intensely hydrates and replenishes lipid-deficient skin
- Prevents Trans-Epidermal Water Loss (TEWL)
- Strengthens the protective skin barrier
- Reduces fine dehydration lines
- Provides immediate and lasting comfort
- Ideal for winter dryness or harsh climates
Suited to
Dry, very dry, or lipid-deficient skin.
How to Use
Apply several drops of Sérum T.E.W.L. to the entire face, neck and décolleté. Massage with fingertips until it has been completely absorbed.
For better soothing and nutrition, mix several drops of Sérum T.E.W.L. with your usual cream if you want additional protection and, more particularly, in extremely cold and low-moisture conditions.
Key Ingredients
Macadamia Nut Oil: This oil is obtained by cold pressing macadamia nuts. Very rich in fatty acids, notably palmitoleic acid, it has moisturizing, nourishing and softening properties. Replenishing and healing, it also helps reduce the appearance of stretch marks, chapping, redness and scars. Very fluid, it immediately penetrates the skin without leaving a greasy film.
Cottonseed Oil: Cotton oil is obtained from cotton seeds. Naturally rich in omega-6 and -9 fatty acids, it has emollient properties and limits cutaneous Transepidermal Water Loss (TEWL). It thus contributes to maintaining the skin’s integrity. Its Vitamin E content also allows it to have antioxidant activity to protect the skin from premature cutaneous aging.
Sesame Oil: Sesame is a plant native to Africa, known for its oil-rich seeds. As it is rich in unsaturated fatty acids (linoleic and oleic acid) as well as vitamin E, Sesame Oil is a protective and antioxidant active ingredient which helps regenerate the skin and prevent cellular aging and skin dryness.
Sea Buckthorn Berry and Seed Oily Extract: Sea buckthorn is a shrub native to the temperate zones of Europe and Asia. The large quantities of essential fatty acids it contains help regenerate the hydrolipidic film and thus reduce Transepidermal Water Loss (TEWL). In addition to improving microcirculation and restoring the skin’s natural radiance, it also helps rejuvenate the skin. Furthermore, the levels of Vitamin E and carotenoids it contains give it antioxidant properties that protect the skin from photoaging, pollution and free radicals. Lastly, being rich in omega 3 and sterols, it soothes stressed, irritated skin and reduces inflammation.
Ingredients
COCO-CAPRYLATE/CAPRATE, SESAMUM INDICUM (SESAME) SEED OIL, APRICOT KERNEL OIL PEG-6 ESTERS, MACADAMIA TERNIFOLIA SEED OIL, CAMELLIA JAPONICA SEED OIL, VACCINIUM MACROCARPON (CRANBERRY) SEED OIL, HIPPOPHAE RHAMNOIDES OIL, HIPPOPHAE RHAMNOIDES SEED OIL, GOSSYPIUM HERBACEUM (COTTON) SEED OIL, ETHYLHEXYL PALMITATE, RASPBERRY SEED OIL/TOCOPHERYL SUCCINATE AMINOPROPANEDIOL ESTERS, OLEA EUROPAEA (OLIVE) FRUIT OIL, HELIANTHUS ANNUUS (SUNFLOWER) SEED OIL, LUFFA CYLINDRICA SEED OIL, SUNFLOWER SEED OIL GLYCERIDES, SIMMONDSIA CHINENSIS (JOJOBA) SEED EXTRACT, ROSMARINUS OFFICINALIS (ROSEMARY) LEAF EXTRACT, SALICORNIA HERBACEA EXTRACT, UNDARIA PINNATIFIDA EXTRACT, CANANGA ODORATA FLOWER OIL, CITRUS AURANTIUM AMARA (BITTER ORANGE) FLOWER OIL, TOCOPHEROL, PHYTOSTEROLS, DATEM, CAPRYLIC/CAPRIC TRIGLYCERIDE, LINALOOL, LIMONENE, BENZYL BENZOATE, FARNESOL, GERANIOL, BENZYL SALICYLATE.
Shipping & Returns
For international orders, please note that duties and taxes may apply. These are calculated by the individual carriers at the time of delivery and are the responsibility of the customer.

Complementary Treatments
Enhance this ritual with an in-studio treatment designed to support skin health from within.
This formula is often used within our facials as the first cleanse. It dissolves impurities, makeup, and excess oil, preparing the skin for what follows while preserving barrier integrity.
For new clients, we recommend a Discovery Consultation, so that your treatment plan is curated to your specific needs and goals.