• Biologique Recherche Sérum T.E.W.L. 1.0 fl.oz – A white skincare bottle with a branded white label featuring dark blue lettering and gold accents, displayed upright on a white background. This intensive hydrating and barrier-repair serum is designed to prevent trans-epidermal water loss and deeply nourish extremely dry or dehydrated skin.
  • Biologique Recherche Sérum T.E.W.L. 0.3 fl.oz – A smaller white serum bottle with a branded white label featuring dark blue lettering and gold accents, shown upright on a white background. This intensive treatment helps prevent moisture loss and restore comfort to dry, dehydrated, or compromised skin.
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Biologique Recherche

Serum T.E.W.L.

Hydrating & Barrier Repair Serum

    $205.00
    $205.00
    or

    Free ground shipping on U.S. orders over $50

    Size
    Description

    Intense Hydration & Barrier Repair Serum

    Deeply Hydrating • Skin Barrier Repair • Anti-Dehydration

    Biologique Recherche Sérum T.E.W.L. is a high-performance, lipid-replenishing serum designed to combat extreme dryness and prevent Trans-Epidermal Water Loss (TEWL). Formulated for dry, dehydrated, and compromised skin, this intensive treatment works to restore the skin’s protective barrier, relieve tightness, and smooth fine lines caused by dehydration.

    Whether you're exposed to harsh weather, dry climates, or environmental stressors, this serum delivers instant comfort and long-lasting hydration. The skin becomes softer, more supple, and visibly healthier.

    Key Benefits

    • Intensely nourishes and protects extremely dehydrated skin
    • Prevents Trans-Epidermal Water Loss (TEWL)
    • Restores the skin's lipid barrier and boosts hydration
    • Reduces the appearance of fine lines caused by dryness
    • Provides immediate and lasting comfort to tight, parched skin
    • Ideal for dry climates or winter skin stress

    Recommended For

    • Very dry, dehydrated, or lipid-deficient Skin Instants©
    • Skin exposed to dry or cold climates
    • Those experiencing tightness, flakiness, or fine dehydration lines
    • Clients seeking to strengthen the skin’s barrier
    HOW TO USE

    Apply a few drops of Sérum T.E.W.L. to clean skin as the final step in your skincare routine, especially in the evening. Can be used alone or mixed with your favorite cream for extra nourishment.

    Pro Tip: For maximum hydration, apply over a water-based serum like Sérum Amniotique or Sérum Extraits Tissulaires.
    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.

    *Please Note: This ingredient list is subject to change. Please refer to the product packaging for the most up-to-date ingredient list.
    FAQS

    Q: Can I use Sérum T.E.W.L. daily?

    A: Yes, this serum is especially beneficial when used daily in dry or cold climates. It’s best applied at night to help lock in moisture while you sleep.

    Q: Is this serum suitable for oily or acne-prone skin?

    A: It’s best suited for very dry or dehydrated skin types. For oily or combination skin, we recommend consulting your esthetician before incorporating it into your routine.

    Q: Can it be layered with other serums?

    A: Yes, it pairs well with water-based serums and is ideally applied last to seal in moisture.
    Biologique Recherche Sérum T.E.W.L. 1.0 fl.oz – A white skincare bottle with a branded white label featuring dark blue lettering and gold accents, displayed upright on a white background. This intensive hydrating and barrier-repair serum is designed to prevent trans-epidermal water loss and deeply nourish extremely dry or dehydrated skin.
    Biologique Recherche Sérum T.E.W.L. 0.3 fl.oz – A smaller white serum bottle with a branded white label featuring dark blue lettering and gold accents, shown upright on a white background. This intensive treatment helps prevent moisture loss and restore comfort to dry, dehydrated, or compromised skin.

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