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Hair Growth Serum

Hair Growth Serum

The Science of Stronger Hair

Rehab Lab

£24.99 GBP
£24.99 GBP £24.99 GBP
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Taxes included. Shipping calculated at checkout.

Rehab Lab Biotin Vitamin + Caffeine Hair Growth Serum is designed to stimulate hair growth and improve overall hair health. Enriched with Biotin, Caffeine and Panthenol, this advanced formula targets the scalp to nourish hair roots, promoting thicker, fuller, and healthier hair.

  • Boosts hair growth for those experiencing thinning or hair loss
  • Reduces breakage and strengthens fragile, brittle hair
  • Improves hair density and volume for thin hair
  • Lightweight formula adds shine and resilience
  • Cruelty-Free & Made in the UK

This serum is perfect for those looking to regrow and fortify their hair, while addressing common causes of hair thinning and loss, including hormonal changes and stress. Use consistently to see noticeable results in hair thickness and vitality. 

How to Use:
Apply to clean (wet or dry) scalp daily. Massage into scalp using Scalp Massage Brush or fingertips. For best results, use with Rehab Lab Hair Growth Shampoo and Conditioner.

Please Note: This product can only be purchased for shipment in the UK.

 

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FAQ's & Hair Growth Facts

Clinically Proven Results

+9% hair density in male subjects and +16% in female subjects after use.*

Scientific Ingredients

  • Biotin (Vitamin B7): Supports keratin production, the key protein that builds strong hair.
  • Caffeine: Stimulates follicles and extends the growth (anagen) phase.
  • Panthenol + Vitamin E: Nourish, hydrate, and protect for long-term scalp and hair health.

Key Benefits

  • Supports thicker, fuller, stronger hair
  • Helps reduce shedding and breakage
  • Creates the ideal scalp environment for growth
  • Scientific system for visible hair and scalp health
  • Science-backed ingredients with proven success

Who Is It For?

  • Postpartum hair loss
  • Menopausal hair thinning
  • Stress-related shedding
  • Or anyone wanting to improve density, strength, and scalp health
  • Not recommended for use with hair extensions.

Returns Information

This is a hygiene product and as such is not eligible for a refund due to health protection reasons.

Why Buy Rehab Lab?

  • Clinically-Backed Actives for Visible Density

    Rehab Lab is powered by biotin + caffeine, two of the most researched ingredients in the hair growth industry, proven to support stronger strands and improved scalp conditions.

  • A Complete Hair Growth System

    We've created a complete scalp-to-strand system for real results. Rehab Lab offers the full ritual:


    Shampoo + Conditioner + Serum + Scalp Tools + Silk Protection.

  • Designed for Women’s Hair Loss

    Targeted support for postpartum, menopausal & hormonal hair thinning. Healthier Scalp, Thicker Hair, Proven Actives.


    YOUR HAIR. ONLY BETTER.

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REHAB LAB

Powerful solutions for thinning hair, hair loss, post-pregnancy or menopausal hair changes.

Struggling with hair loss or thinning hair? Our Hair Growth Range is designed to stimulate hair growth and improve overall hair health. Enriched with Biotin, Caffeine and other proven growth ingredients, this advanced formula targets the scalp to nourish hair roots for thicker, fuller and healthier hair.

Key Ingredients & Hair Growth Benefits

  • Biotin (Vitamin B7)

    Supports keratin production and strengthens the hair fibre.

    Helps improve hair resilience, reduce breakage, and support thicker, healthier-looking growth

  • Caffeine

    Stimulates the scalp and energises hair follicles.

    Encourages improved circulation at the root to promote fuller-looking hair and support growth conditions

  • Panthenol (Pro-Vitamin B5)

    Deeply hydrates and smooths the hair shaft.

    Strengthens strands, enhances shine, and helps hair feel healthier and less prone to snapping

  • Tocopherol Acetate (Vitamin E)

    Powerful antioxidant that protects scalp and hair.

    Helps defend follicles from environmental stress while supporting a healthy scalp environment for growth

  • Lecithin

    Natural emollient that conditions and moisturises.

    Nourishes the scalp and improves overall softness and manageability for healthier hair from root to tip

  • Cetrimonium + Behentrimonium Chloride

    High-performance conditioning agents used in luxury haircare.

    Smooth and detangle while reducing breakage — essential for supporting length retention and density

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