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4.6/5

(87 reviews)

KLYRA. BARRIER SERUM

Prebiotic Fortification
Cellular Hydration
Structural Resilience

A considered approach to deep hydration, where lasting equilibrium takes precedence over superficial moisture. This lightweight prebiotic gel delivers multi-level hydration while helping to reinforce the skin’s protective barrier and support its delicate microbiome, maintaining optimal comfort, suppleness, and cellular balance throughout the day.

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1 item

$48
-10%

2 items

$86.40 $96
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    Phase II — The Treatment Protocol

    Barrier Serum

    Microbiome defense. Immediate calming. Advanced barrier repair.

    When the skin is destabilized, its microbiome and protective barrier become compromised. The Barrier Serum is engineered to restore equilibrium through a targeted biotic approach.

    This lightweight hydro-jelly formula delivers immediate soothing while reinforcing the skin’s natural defense systems. The complexion appears visibly calmer, more resilient, and better equipped to withstand daily environmental stressors.

    Sensory Profile

    Texture A cooling hydro-jelly that absorbs instantly without residue.
    Aroma Fresh green and citrus notes with subtle botanical undertones.
    Finish Calm, balanced, and perfectly prepped for recovery.

    Formulation Science

    Microbiome Support Lactobacillus Ferment Lysate helps rebalance the skin’s microbiome and reinforce its natural defense barrier.
    Deep Hydration Complex Sodium Hyaluronate and Sodium PCA attract and retain moisture for optimal skin hydration.
    Soothing Botanical Matrix Algin-derived gel structure instantly calms visible redness and discomfort.

    Anticipated Results

    • From first application: Immediate soothing and reduction in visible redness.
    • With continued use: Improved skin balance and enhanced hydration.
    • Over time: Strengthened barrier function and increased resilience to external stressors.

    The Ritual

    Apply 1–2 pumps to clean, dry skin morning and evening. Follow with Recovery Cream to seal hydration and reinforce barrier repair.

    Formulation Philosophy

    99% Natural origin. Certified COSMOS Natural. Dermatologically tested, Vegan, Nut-free, and Gluten-free.

    The Barrier Reset PROTOCOL

    A complete protocol to cleanse, treat, and repair.
    Designed for compromised, reactive, and stressed skin.

     Discover the full PROTOCOL
    View Ingredients & Ethics

    Aqua/Water, Alcohol②, Glycerin②, Sodium PCA, Cellulose Gum, Algin, Lactobacillus Ferment Lysate, Parfum/Fragrance, Sodium Phytate, Potassium Sorbate, Sodium Benzoate, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Pogostemon Cablin Oil.

    ② Made using organic ingredients. 99% Natural origin of total. 10% Organic origin of total.

    COSMOS NATURAL certified by ECOCERT Greenlife. Produced using eco-friendly processes respecting human health and biodiversity. No GMO ingredients. Fully recyclable packaging.


Part of the daily protocol :

KLYRA. THE GLASS SKIN PROTOCOL

KLYRA. THE GLASS SKIN PROTOCOL

$97 $122

HOW IT WORK


  • Preparation : Ensure the face, neck, and décolleté are freshly cleansed and left slightly damp. This creates an optimal environment for active diffusion and hydration binding.

  • Dispensation : Dispense 1 to 2 pumps of the lightweight prebiotic gel directly onto your fingertips.

  • Application : Gently press and smooth the serum into the skin using slow, upward sweeping motions. The biomimetic hydration matrix begins to infuse instantly, calming the skin while initiating structural repair.

  • Sealing : Once fully absorbed, follow immediately with your preferred moisturizer or the KLYRA. RECOVERY CREAM to seal in hydration and protect the integrity of the active ferments.

Expert Guidance

To maximize the performance of the Hyaluronic Acid and Sodium PCA complex, always apply to slightly damp skin. This allows the actives to bind water efficiently within the epidermis, optimizing hydration retention and minimizing trans-epidermal water loss.

For complete barrier optimization, incorporate this protocol into both morning and evening rituals. Morning application helps defend the microbiome against environmental stressors, while evening use works in synergy with the skin’s natural nocturnal regeneration cycle to restore balance and resilience.

Discover the ultimate protocol :

KLYRA. THE ULTIMATE PROTOCOL

KLYRA. THE ULTIMATE PROTOCOL

$147 $215
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SIGNATURE ACTIVES


  • Microbiome Defense Ferment

    Actively calibrates the skin’s delicate microbiome. This advanced biotic extract strengthens your natural defense barrier, building long-term structural resilience and significantly reducing reactivity in compromised or stressed skin.

  • Multi-Molecular Hyaluronic Acid

    A dual-weight hydration matrix utilizing both Hydrolyzed Hyaluronic Acid and Sodium Hyaluronate. It penetrates multiple depths of the epidermis to instantly plump the surface while establishing a deep, sustained reservoir of cellular moisture.

  • Bio-Identical Sodium PCA

    A crucial component of the skin's Natural Moisturizing Factor (NMF). It acts as an intelligent humectant, binding essential water molecules directly to your skin cells to aggressively prevent trans-epidermal water loss (TEWL) and maintain elasticity.

  • Marine Algin Complex

    Derived from mineral-rich brown algae, this soothing botanical polymer forms a weightless, breathable micro-shield across the face. It immediately calms visible inflammation while locking in the active serum matrix for prolonged, uninterrupted barrier repair.

VERIFIED CLIENT EXPERIENCES

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    Ava I.

    I went too hard with retinol and ruined my skin barrier. This serum completely fixed my redness and sensitivity in just a few days. So soothing

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    Charlotte B.

    Super lightweight. I love that it’s a clear gel serum. It absorbs instantly and doesn't leave a tacky or sticky finish. Perfect under my daily moisturizer

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    Amelia G.

    The glass dropper dispenses the perfect amount and it looks very high-end

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    Amelia R.

    I've never used a prebiotic serum before but my skin absolutely loves this. I haven't had a single breakout since I started using it

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    Mia A.

    I use this right after cleansing while my face is still damp, and before my heavier cream. It locks in moisture beautifully. I go through it pretty fast though

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    Evelyn P.

    My face is usually very flushed after I wash it, but applying a few drops of this serum instantly cools and calms the redness down

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    Isabella Q.

    Love the minimalist glass dropper bottle

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    Olivia S.

    I always get tight flaky skin around my nose and mouth, but since adding this biotic serum to my routine, my skin is completely smooth and deeply moisturized all day

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    Harper A.

    My skin feels supple and calm immediately after use

FREQUENTLY ASKED QUESTIONS

What differentiates the Barrier Serum from a standard hydrating serum?

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While traditional serums focus exclusively on temporary surface moisture, our formula is a structural treatment. Infused with an Advanced Biotic Lysate (prebiotics), it actively feeds your skin's microbiome. This means it not only delivers multi-depth cellular hydration but actively repairs your skin’s natural defense barrier for long-term resilience.

Should I integrate this into my morning or evening ritual?

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The Barrier Serum is engineered for dual application. Using it in the morning creates a protective micro-shield against daily environmental stressors and pollutants. Evening application synergizes with your skin’s natural nocturnal regeneration cycle to deeply repair the lipid barrier overnight.

Is this formula suitable for highly reactive or compromised skin?

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Absolutely. This serum was specifically designed to rescue distressed skin. The biocompatible matrix is dermatologically tested, vegan, and utilizes soothing botanical polymers (like Marine Algin) to immediately calm visible inflammation, redness, and sensitivity without irritation.

Can it be applied to the delicate eye contour?

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Yes. The lightweight, water-gel texture is exceptionally gentle and safe for the delicate skin around the eyes. We recommend lightly pressing a small amount around the orbital bone, taking care to avoid direct contact with the eyes themselves.

How does this synergize with the KLYRA. RECOVERY CREAM

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They are formulated to work in perfect, sequential harmony. The Barrier Serum acts as a deep hydration and microbiome-balancing treatment (water-based phase). Following immediately with the Recovery Cream (lipid-based phase) seals the active ferments into the skin, locking in moisture and completing the ultimate barrier repair protocol.