Serum Yall~O2
Benefits
Biologique Recherche Serum Yall~O2 is a rich face oil that plumps, hydrates and regenerates the skin. It combats dehydration and signs of ageing by enhancing skin fullness, leaving the complexion more energised and brighter.
Walnut Extract counteracts skin ageing by stimulating fibroblast activity and inhibiting elastase, preventing natural elastin from degrading and promoting a more elastic, smoother and toned skin with reduced fine lines.
Chaperone Proteins — produced by microorganisms from the Valaus Glacier — support elastin and collagen activity, offering firming and plumping benefits while boosting cellular energy for a brighter complexion.
The Red Seaweed & Tara Fruit Extract Complex forms a flexible, non-occlusive film on the skin that reinforces the barrier and enhances resilience, while Low Molecular Weight Hyaluronic Acid, High Molecular Weight Hyaluronic Acid and a Trio of Polysaccharides deliver hydration at every level of the skin.
The Biologique Recherche Oxygenating Complex completes the formula, enhancing the skin's use of oxygen at a cellular level for a complexion that is visibly plumper, more luminous and thoroughly energised.
Biologique Recherche Serum Yall~O2 is a rich face oil that plumps, hydrates and regenerates the skin. It combats dehydration and signs of ageing by enhancing skin fullness, leaving the complexion more energised and brighter.
Walnut Extract counteracts skin ageing by stimulating fibroblast activity and inhibiting elastase, preventing natural elastin from degrading and promoting a more elastic, smoother and toned skin with reduced fine lines.
Chaperone Proteins — produced by microorganisms from the Valaus Glacier — support elastin and collagen activity, offering firming and plumping benefits while boosting cellular energy for a brighter complexion.
The Red Seaweed & Tara Fruit Extract Complex forms a flexible, non-occlusive film on the skin that reinforces the barrier and enhances resilience, while Low Molecular Weight Hyaluronic Acid, High Molecular Weight Hyaluronic Acid and a Trio of Polysaccharides deliver hydration at every level of the skin.
The Biologique Recherche Oxygenating Complex completes the formula, enhancing the skin's use of oxygen at a cellular level for a complexion that is visibly plumper, more luminous and thoroughly energised.
Read less30 ml
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More Info
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Who it is for
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How to Apply
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Ingredients
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Smell & Texture
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About the Brand
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Who it is for
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How to Apply
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Ingredients
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Smell & Texture
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About the Brand
For you if
Not For you if
Biologique Recherche treats skin according to its Skin Instant©, the skin’s precise, evolving state. Each formula is loaded with active ingredients in exceptional concentrations, then prescribed to address those real-time needs. This precision approach corrects imbalances, restores function, and delivers visible, lasting transformation.
Cold-processed actives are the core of Biologique Recherche. Formulated at 18–25°C, this method avoids the 70°C heat of standard processing that breaks down actives. Botanical, marine, and biotechnological extracts stay intact for higher absorption, stronger repair, and better tolerance. Antioxidants, peptides, and enzymes remain stable, ensuring consistent, visible results.
The Benefits
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Anti-Wrinkle
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Firming & Lifting
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Plumping
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Micro-Needling Effect
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Anti-Pigmentation
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Scar-Repairing
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Brightening (Energising)
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Reduces Trans Epidermal Water Loss
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Skin Barrier Strengthening
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Hydrating
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Anti-Inflammatory
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Microbiome Balancing
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Brightening (Oxygenation)
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Anti-Redness
Anti-Wrinkle
Firming & Lifting
Plumping
Micro-Needling Effect
Anti-Pigmentation
Scar-Repairing
Brightening (Energising)
Reduces Trans Epidermal Water Loss
Skin Barrier Strengthening
Hydrating
Anti-Inflammatory
Microbiome Balancing
Brightening (Oxygenation)
Anti-Redness
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Anti-Wrinkle
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+
Firming & Lifting
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+
Plumping
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+
Micro-Needling Effect
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+
Anti-Pigmentation
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+
Scar-Repairing
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+
Brightening (Energising)
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+
Reduces Trans Epidermal Water Loss
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+
Skin Barrier Strengthening
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+
Hydrating
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+
Anti-Inflammatory
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+
Microbiome Balancing
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+
Brightening (Oxygenation)
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Anti-Redness
Active Ingredients
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Walnut Extract
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Chaperone Proteins
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Red Seaweed & Tara Fruit Extract Complex
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Low Molecular Weight Hyaluronic Acid
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High Moleclular Weight Hyaluronic Acid (Hyaluronic Acid)
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Polysaccharides
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Biologique Recherche Oxygenating Complex
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Soybean Phospholipids
Walnut Extract
Chaperone Proteins
Red Seaweed & Tara Fruit Extract Complex
Low Molecular Weight Hyaluronic Acid
High Moleclular Weight Hyaluronic Acid (Hyaluronic Acid)
Polysaccharides
Biologique Recherche Oxygenating Complex
Soybean Phospholipids
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Walnut Extract
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Chaperone Proteins
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Red Seaweed & Tara Fruit Extract Complex
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Low Molecular Weight Hyaluronic Acid
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High Moleclular Weight Hyaluronic Acid (Hyaluronic Acid)
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Polysaccharides
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Biologique Recherche Oxygenating Complex
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Soybean Phospholipids
The Biologique Recherche Proprietary Oxygenating Complex
Clinical Proofs
Spotlight
The Biologique Recherche Proprietary Oxygenating Complex
Clinical Proofs
Clinical Proofs
Frequently Asked Questions
Where do I use this oil in my routine?
How often should I use this oil?
Can I use this oil instead of a cream?
Can I use this oil if I have oily skin?
Can I use this oil if I have dry skin?
Can I use this oil if I have sensitive skin?
Can this product be used pregnancy/breast feeding?
Does it contain allergens?
Is the packaging recyclable?
Is this product fragrance-free, cruelty-free, vegan-friendly?
Why I love it
X Natalie K-F
Founder, Embassy of Beauty










