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Expert Eyes Lash & Brow Serum

NATURALLY ENHANCED EYES
Expert Eyes Lash & Brow Serum
Biologique Recherche
Benefits
  • Hair-Growth
  • Repairing
  • Hair Strengthening
  • Antioxidant
  • Promotes Shine
  • Soothing
  • Conditioning

The Biologique Recherche Expert Eyes Lash and Brow Serum is an advanced double-serum treatment formulated to strengthen, nourish and densify eyelashes and eyebrows, delivering visible improvements in length and density within 14 to 28 days. Serum No. 1 is applied to the roots, Serum No. 2 through the lengths.

Serum No. 1 contains the Pea Extract and Sucrose Dilaurate Complex, which stimulates dermal papilla cells to support hair regrowth and reduce shedding, while also regulating melanin production at the follicle level for a more even-toned lash and brow line.

Resveratrol provides potent antioxidant protection against oxidative damage at the follicle, preserving follicle integrity and supporting denser, stronger growth, while Biomimetic Peptide and Red Clover Extract minimise hair loss by stabilising DHT levels and normalising hair growth cycles.

Serum No. 2 contains Abyssinian Oil — rich in omega fatty acids — which nourishes and reinforces the cuticle layer, reduces breakage and protects against environmental damage.

Rep'Hair (Vegetable Protein) penetrates deeply into weakened hair fibres to repair protein bonds, restore elasticity and strengthen from within — together delivering visibly fuller, longer and more resilient lashes and brows.

Read more

The Biologique Recherche Expert Eyes Lash and Brow Serum is an advanced double-serum treatment formulated to strengthen, nourish and densify eyelashes and eyebrows, delivering visible improvements in length and density within 14 to 28 days. Serum No. 1 is applied to the roots, Serum No. 2 through the lengths.

Serum No. 1 contains the Pea Extract and Sucrose Dilaurate Complex, which stimulates dermal papilla cells to support hair regrowth and reduce shedding, while also regulating melanin production at the follicle level for a more even-toned lash and brow line.

Resveratrol provides potent antioxidant protection against oxidative damage at the follicle, preserving follicle integrity and supporting denser, stronger growth, while Biomimetic Peptide and Red Clover Extract minimise hair loss by stabilising DHT levels and normalising hair growth cycles.

Serum No. 2 contains Abyssinian Oil — rich in omega fatty acids — which nourishes and reinforces the cuticle layer, reduces breakage and protects against environmental damage.

Rep'Hair (Vegetable Protein) penetrates deeply into weakened hair fibres to repair protein bonds, restore elasticity and strengthen from within — together delivering visibly fuller, longer and more resilient lashes and brows.

Read less

2 x 4 ml

£135
MyEB
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More Info

  • - + How to Apply
  • - + Ingredients
  • - + Smell & Texture
  • - + About the Brand
  • - + How to Apply
  • - + Ingredients
  • - + Smell & Texture
  • - + About the Brand
How to Apply
Apply Serum No. 1 with the liner to the roots of lashes and brows. Follow with Serum No. 2, brushing through the lengths for full coverage.
Ingredients

Scroll down the page for a full breakdown of the active ingredients.

Serum No. 1:

Water (Aqua), Glycerin, Butylene Glycol, Sphingomonas Ferment Extract, Hydrolyzed Vegetable Protein, Malus Domestica Fruit Cell Culture Extract, Pisum Sativum (Pea) Extract, Trifolium Pratense (Clover) Flower Extract, Acetyl Tetrapeptide-3.
Serum No. 2:
Water (Aqua), Glycerin, Butylene Glycol, Hydrolyzed Lupine Protein, Phospholipids, Prunus Amygdalus Dulcis (Sweet Almond) Seed Extract, Glycine Soja (Soybean) Oil, Tilia Tomentosa Extract, Trifolium Pratense (Clover) Flower Extract.


Please note: The ingredients listed in this product are subject to change as the formulation is updated. We aim to update the INCI list as soon as possible, but we encourage you to read the ingredient list on the product itself to ensure it's suitable for your personal use.

Smell & Texture

Smell: It has a light, clean, and botanical scent.

Texture:
Serum No. 1: Lightweight liquid
Serum No. 2: Silky, smooth

About the Brand
Brand logo
Founded in Paris in the late 1970s by biologist Yvan Allouche and physiotherapist Josette Allouche, Biologique Recherche began as a laboratory for bespoke, high-performance formulas for elite skin professionals. Their medical-grade precision and artisanal formulation, paired with consummate savoir-faire, underpin their reputation for outstanding, clinically proven results.

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

  • - + Stimulates Hair Growth
  • - + Repairing
  • - + Hair Strengthening
  • - + Antioxidant Protection
  • - + Promoting Shine
  • - + Soothing
  • - + Conditioning
Stimulates Hair Growth

Revitalise your scalp and promote healthy, strong hair growth. By stimulating hair follicles and improving blood circulation, you can encourage new hair growth while strengthening existing strands. This leads to thicker, fuller hair with enhanced texture.

Repairing

Damaged hair is typically identifiable by a rough, straw-like texture, increased difficulty in styling, and visible signs such as broken strands and split ends. These symptoms reflect underlying structural compromise within the hair fiber, often resulting from external aggressors such as chemical treatments, thermal styling, UV exposure, and mechanical stress.

Lipid Cement Deficiency occurs when the cuticle is exposed to aggressive treatments or environmental factors, and stripped of essential lipids, resulting in increased permeability. This loss compromises its barrier function, leaving the underlying cortex vulnerable to protein and lipid degradation.

Split Ends occur when the lipid distribution is uneven along the length of the hair shaft, with the ends being the most affected. The hair ends, being older and more frequently exposed to damaging elements, contain up to 30% less ceramide than the root, making the hair more prone to splitting and breakage.

Cuticle Scale Separation occurs when the lipid cement causes the scales to lift and disconnect, exposing the cortex and increasing transepidermal water loss (TEWL). This results in excessive dehydration, leaving the hair dry, brittle, and more susceptible to further damage.

Keratin Fiber Degradation occurs when the lipid and protein components weaken the keratin matrix, the hair loses tensile strength, flexibility, and resilience.

Loss of Shine occurs when the hair is damaged and exhibits irregularities and surface roughness due to disrupted scales and lipid loss. These irregular surfaces scatter light unevenly, leading to a dull, lackluster appearance.

Hair Strengthening

Strengthening in haircare is all about restoring your hair's healthy structure and enhancing its resilience against damage, breakage, and the stresses of daily styling, such as heat exposure. Strengthening haircare products deliver essential components like proteins, hydration, and lipids that work together to reinforce hair strands. They support internal hair bonds, restore moisture, and coat the outer layer to protect and smooth, resulting in a shinier, smoother finish. By promoting a healthier hair structure, these products encourage faster hair growth and improve manageability.

Antioxidant Protection

Antioxidant protection in haircare uses natural molecules known as antioxidants to neutralise harmful free radicals. These unstable, reactive atoms are caused by environmental factors like pollution, UV radiation, and chemical exposure, which can damage hair follicles and irritate the scalp, leading to hair loss, compromised growth, and weakened hair structure. By incorporating antioxidants into your haircare routine, you can combat these negative effects and promote healthy, strong, radiant, and smooth hair.

Promoting Shine

Promoting Shine in haircare is all about restoring the hair’s surface integrity so it can better reflect light. Shine is a direct result of a smooth, sealed cuticle, when the protective outer scales lie flat, light reflects evenly, giving hair its healthy, radiant appearance.

Dry, damaged, or lipid-depleted hair loses this reflectivity due to raised, fragmented cuticles. Shine-enhancing formulations work by replenishing moisture and essential lipids, smoothing the hair fibre, and coating it with film-forming actives. These ingredients help repair surface damage, seal the cuticle, and create a polished finish, leaving hair softer, glossier, and more vibrant. By reinforcing both hydration and structure, these formulas restore luminosity and improve overall hair vitality.

Soothing

Soothing Care for the Scalp is essential when the barrier function is disrupted by factors such as genetics, inflammatory skin conditions, harsh haircare products, or environmental stressors. The scalp, with its dense network of nerve endings and microflora, is highly sensitive and prone to discomfort including itching, redness, dryness, and flaking.

Soothing active ingredients with anti-inflammatory and microbiome-balancing properties help calm irritation, reduce redness, and restore barrier integrity. By reinforcing the scalp’s physical, biological, and microbiological defences, these ingredients promote long-term comfort, reduce hypersensitivity, and support a healthy environment for strong, resilient hair growth

Conditioning

Conditioning in hair products involves replenishing hydration, nutrients, and oils to your hair strands, enhancing their manageability, smoothness, and overall health. Hair often suffers from damage caused by environmental factors like sun exposure, heat styling, brushing, and chemical treatments such as dyeing. When your hair bonds are compromised, it becomes tangled, less manageable, prone to breakage, and frizzy, losing its natural shine. Conditioning agents strengthen these bonds to repair damage, smooth the hair cuticle, reduce friction between strands, and lock in hydration. This results in softer, shinier hair that is more resistant to breakage and frizz. Regular conditioning promotes healthier, more resilient hair, visibly improving its texture and appearance quickly.

  • - + Stimulates Hair Growth
  • - + Repairing
  • - + Hair Strengthening
  • - + Antioxidant Protection
  • - + Promoting Shine
  • - + Soothing
  • - + Conditioning

Active Ingredients

  • - + Pea Extract & Sucrose Dilaurate Complex (Eyelashes & Brows)
  • - + Rep’Hair
  • - + Resveratrol (Eyelashes & Brows)
  • - + Biomimetic Peptide & Red Clover Extract
  • - + Abyssinian Oil (Eyelashes & Brows)
Pea Extract & Sucrose Dilaurate Complex (Eyelashes & Brows)

This advanced complex helps regulate melanin production at the follicle level by inhibiting PMEL-17 gene expression, which is involved in pigment formation. The result is a more even-toned, uniform appearance of the brow and lash line. Additionally, Pea Extract is rich in protein and stimulates dermal papilla cells, supporting hair regrowth and reducing shedding, ideal for promoting fuller lashes and brows.

Rep’Hair

Rep’Hair (Vegetable Protein) penetrates deeply into weakened hair fibers, delivering essential nutrients to repair and strengthen lashes and brows. Derived from hydrolysed vegetable protein, it moisturises and fortifies the cuticle, preventing damage and breakage. By enhancing resilience and promoting a smoother texture, it revitalises the appearance of lashes and brows.

Resveratrol (Eyelashes & Brows)

Resveratrol is a potent antioxidant naturally found in red grapes. When used on eyelashes and eyebrows, it helps neutralise free radicals caused by UV and environmental stressors, protecting the delicate hair follicles from oxidative damage. This protective action helps preserve follicle integrity, reduces inflammation at the root, and supports stronger, more resilient hair. Over time, it contributes to visibly denser, shinier lashes and brows by improving the health of the growth environment.

Biomimetic Peptide & Red Clover Extract

Biomimetic Peptide & Red Clover Extract help minimise hair loss by stabilising hormonal fluctuations, specifically in Dihydrotestosterone (DHT) levels, which are linked to hair loss. They also reduce scalp irritation and enhance cell renewal processes to normalise hair growth cycles, thereby reducing excessive hair loss and stimulating new hair growth.

Abyssinian Oil (Eyelashes & Brows)

Abyssinian Oil is rich in omega fatty acids, including erucic, oleic, and linoleic acids, which deeply nourish and protect eyebrow and eyelash hairs. It reinforces the cuticle layer, enhances moisture retention, and forms a lightweight barrier that defends against environmental aggressors and mechanical damage from makeup or styling. Known for its rapid absorption and non-greasy finish, it leaves hairs feeling soft and supple while reducing breakage. Its anti-inflammatory profile also helps soothe follicular irritation, encouraging healthier growth cycles and supporting hair density and shine.

  • - + Pea Extract & Sucrose Dilaurate Complex (Eyelashes & Brows)
  • - + Rep’Hair
  • - + Resveratrol (Eyelashes & Brows)
  • - + Biomimetic Peptide & Red Clover Extract
  • - + Abyssinian Oil (Eyelashes & Brows)
Rep’Hair (Vegetable Protein)

Rep’Hair™ (Vegetable Protein) penetrates deeply into weakened hair fibres, delivering essential nutrients to repair and strengthen from within. Derived from hydrolysed vegetable protein, this biomimetic active is rich in amino acids that resemble the natural keratin structure of the hair, allowing for effective absorption and targeted action at the core of the fibre.

Once inside the cortex, Rep’Hair™ works to rebuild internal cohesion, reinforcing protein bonds compromised by chemical treatments, heat styling, or environmental stress. At the same time, it acts on the hair’s surface, moisturising and fortifying the cuticle—the outermost layer of the hair shaft—creating a flexible yet protective film that seals in hydration and reduces surface porosity.

The result is stronger, more resilient hair with visibly improved texture and shine. Split ends and breakage are reduced, elasticity is restored, and the hair feels smoother, softer, and easier to manage. Over time, hair regains its vitality, appearing naturally healthy, polished, and full of life.

Spotlight

Rep’Hair (Vegetable Protein)

Rep’Hair™ (Vegetable Protein) penetrates deeply into weakened hair fibres, delivering essential nutrients to repair and strengthen from within. Derived from hydrolysed vegetable protein, this biomimetic active is rich in amino acids that resemble the natural keratin structure of the hair, allowing for effective absorption and targeted action at the core of the fibre.

Once inside the cortex, Rep’Hair™ works to rebuild internal cohesion, reinforcing protein bonds compromised by chemical treatments, heat styling, or environmental stress. At the same time, it acts on the hair’s surface, moisturising and fortifying the cuticle—the outermost layer of the hair shaft—creating a flexible yet protective film that seals in hydration and reduces surface porosity.

The result is stronger, more resilient hair with visibly improved texture and shine. Split ends and breakage are reduced, elasticity is restored, and the hair feels smoother, softer, and easier to manage. Over time, hair regains its vitality, appearing naturally healthy, polished, and full of life.

Why I love it

  • The efficacy of Biologique Recherche relies not only on its science-driven approach to balancing and curing the skin, but on its prescriptive and tailored nature.

    X Natalie K-F

    Founder, Embassy of Beauty