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Subscribe & Save 18% + Free gift worth £134

Bestseller

Collagen Complex Hair Thickening Shampoo & Conditioner Duo

From £17.00 £9.95

This collagen-infused shampoo and conditioner duo is clinically proven to boost hair thickness by up to 20% in just 8 weeks - without weighing it down.

Formulated by leading hair experts, it strengthens, volumises, and smooths for visibly healthier, glossier hair.

Why You’ll Love It:
Up to 20% thicker hair
Strengthens & reduces breakage
Adds volume, shine & hydration

Select Size

FREE Next Working Day Delivery. Order Before 4pm (UK Only)

Why Subscribe?

Good hair days, on repeat.

  • Never run out - enjoy consistent delivery to your door
  • Save 9% per order plus enjoy exclusive subscriber perks
  • Flexible options: pause, skip, or cancel

Because thicker, healthier hair should always be this easy.

Clinically Proven Benefits

In a 12-week trial led by Eva Proudman MIT IAT:

  • Participants who used the shampoo and conditioner 5 times a week saw up to a 20% increase in hair thickness after 8 weeks
  • Improvements were visibly noticeable to the eye - no instruments needed

Results were measured across density, diameter, and follicular unit count, proving the duo’s powerful performance.

Why Absolute Collagen?
Our collagen complex hair care products:

  • Thickens from within
  • Helps reduce breakage and shedding
  • Keeps colour looking vibrant with gentle, non-stripping cleansers

For best results, we recommend using our hair care alongside a daily dose of Absolute Collagen’s collagen supplements.

How To Use

A little goes a long way - use a 10p-sized amount of each product per wash.

For best results, we recommend:

  • Washing at least 5 times per week, or
  • Every other day for more flexible routines (results may take longer)

Designed to support healthy hair daily, this duo delivers benefits that go beyond volume:

  • Helps reduce breakage and shedding
  • Supports scalp balance for longer growth cycles
  • Improves strand strength and hair fullness
  • Leaves hair looking glossier, thicker, and visibly healthier

For even better results, use alongside our daily collagen supplement to support hair from within.

Ingredients

SHAMPOO

(250ml): Aqua (Water), TEA-Lauryl Sulfate, Myristamide DIPA, Glycerin, Disodium Laureth Sulfosuccinate, Lauryl Betaine, Glycol Distearate, Parfum (Fragrance), Laureth-4, Sodium Chloride, Pentylene Glycol, Cocamidopropyl Betaine, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Polyquaternium-7, Collagen Amino Acids, Phenoxyethanol, Dehydroacetic Acid, Citric Acid, Triticum Vulgare (Wheat) Bran Extract, Potassium Sorbate, Soluble Collagen, Leuconostoc/Radish Root Ferment Filtrate, Formic Acid, 1,2-Hexanediol, Caprylyl Glycol, Methylisothiazolinone, Benzyl Alcohol, Hexyl Cinnamal, Limonene, Linalool, Geraniol.

CONDITIONER

(250ml): Aqua (Water), Glycerin, Cetearyl Alcohol, Cocos Nucifera (Coconut) Oil, Behentrimonium Chloride, Olea Europaea (Olive) Fruit Oil, Cetrimonium Chloride, Parfum (Fragrance), Amodimethicone, Ricinus Communis (Castor) Seed Oil, Ethyltrimonium Chloride Methacrylate/Hydrolyzed Wheat Protein Copolymer, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Pentylene Glycol, Collagen Amino Acids, Hydrogenated Vegetable Oil, Dehydroacetic Acid, Trideceth-12, Triticum Vulgare (Wheat) Bran Extract, Soluble Collagen, Citric Acid, Disodium EDTA, Phenoxyethanol, Potassium Sorbate, Leuconostoc/Radish Root Ferment Filtrate, Sodium Benzoate, 1,2-Hexanediol, Caprylyl Glycol, Tocopherol, Benzyl Alcohol, Hexyl Cinnamal, Limonene, Linalool.

The Science

Our Thickening Shampoo & Conditioner use advanced collagen technology to deliver results you can see and feel.

  • Soluble collagen nourishes and smooths the hair cuticle for shine and gloss
  • Collagen amino acids penetrate the cortex to boost volume and body
  • Wheat and plant proteins add strength and fullness
  • Enriching oils in the conditioner lock in hydration and restore suppleness

Just a small amount creates powerful thickening results - for hair that’s sleek, strong, and never flat.

Results that speak for themselves​​​​‌‍​‍​‍‌‍‌​‍‌‍‍‌‌‍‌‌‍‍‌‌‍‍​‍​‍​‍‍​‍​‍‌​‌‍​‌‌‍‍‌‍‍‌‌‌​‌‍‌​‍‍‌‍‍‌‌‍​‍​‍​‍​​‍​‍‌‍‍​‌​‍‌‍‌‌‌‍‌‍​‍​‍​‍‍​‍​‍‌‍‍​‌‌​‌‌​‌​​‌​​‍‍​‍​‍‌‍​‌‌‍​​‍‌‌​‌‍​‌‌‍‍‌‍‍‌‌‌​‌‍‌​‍‌‌‍​‌‍‌‌​​‍‍‌‍‍‌‍‌‌‌‌​‌‍​‌‍‍‌‌‍‌‍‌‍‌​‍‍‌‍​‌‌​​‌​​​‍‌‍‍‌‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‌‍‌‌‌‍‌​‌‍‍‌‌‌​​‍‌‍‌‌‍‌‍‌​‌‍‌‌​‌‌​​‌​‍‌‍‌‌‌​‌‍‌‌‌‍‍‌‌​‌‍​‌‌‌​‌‍‍‌‌‍‌‍‍​‍‌‍‍‌‌‍‌​​‌​‌‍​‌‍​​​​​‌‌‍​‌‍​‍​‍​​​‌​‍‌​‍​‌‍​​‌‍​‌​​‍‌​‌​‌‍‌‍‌‍​‍​‌‍​‍‌​‍‌​‌‌‌‍‌​​‍‌​‍‌​‌​​‌​​‍‌‍​‍‌‍​​​​‌‍‌‍‌‌​​‌‍‌‍​​‌​​​​‍‌‌​‌‍‌‌​​‌‍‌‌​‌‌‍​‌‍‌‍​‌‍​‌‌‍​‌‍‍‌‌​‌‍‌‌‌‍‌​‌‌​​‌​‍‌‍‌‍‌​‌‌‌‌‍​‌‌​‌‌​​‌‍​‌‌‍‌‌‍‌‌‌​‌​‌‍‌‍​‌‌‌‌‍‌‌‍‌‌‌‍‍‌‌​​‍‌​​‌‍​‌‌‌​‌‍‍​​‌‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‍‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‌‌​‌‌‌​​‍‌‌‌‍‍‌‍‌‌‌‍‌​‍‌‌​​‌​‌​​‍‌‌​​‌​‌​​‍‌‌​​‍​​‍​​​​‍‌‌‍​​‌​​​​​​‍​​‌​​​​‍​‌‌‌‍​‌​‌​​‍‌‌​​‍​​‍​‍‌‌​‌‌‌​‌​​‍‍‌‍‍​‌‍‌‌‌‍​‌‌‍‌​‌‍‍‌‌‍‍‌‍‌​‌‍​‍‌‍​‌‌​‌‍‌‌‌‌‌‌‌​‍‌‍​​‌‌‍‍​‌‌​‌‌​‌​​‌​​‍‌‌​​‌​​‌​‍‌‌​​‍‌​‌‍​‍‌‌​​‍‌​‌‍‌‍​‌‌‍​​‍‌‌​‌‍​‌‌‍‍‌‍‍‌‌‌​‌‍‌​‍‌‌‍​‌‍‌‌​​‍‍‌‍‍‌‍‌‌‌‌​‌‍​‌‍‍‌‌‍‌‍‌‍‌​‍‍‌‍​‌‌​​‌​​​‍‌‍‌‍‍‌‌‍‌​​‌​‌‍​‌‍​​​​​‌‌‍​‌‍​‍​‍​​​‌​‍‌​‍​‌‍​​‌‍​‌​​‍‌​‌​‌‍‌‍‌‍​‍​‌‍​‍‌​‍‌​‌‌‌‍‌​​‍‌​‍‌​‌​​‌​​‍‌‍​‍‌‍​​​​‌‍‌‍‌‌​​‌‍‌‍​​‌​​​​‍‌‍‌‌​‌‍‌‌​​‌‍‌‌​‌‌‍​‌‍‌‍​‌‍​‌‌‍​‌‍‍‌‌​‌‍‌‌‌‍‌​‌‌​​‌​‍‌‍‌‍‌​‌‌‌‌‍​‌‌​‌‌​​‌‍​‌‌‍‌‌‍‌‌‌​‌​‌‍‌‍​‌‌‌‌‍‌‌‍‌‌‌‍‍‌‌​​‍‌‍‌​​‌‍​‌‌‌​‌‍‍​​‌‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‍‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‌‌​‌‌‌​​‍‌‌‌‍‍‌‍‌‌‌‍‌​‍‌‌​​‌​‌​​‍‌‌​​‌​‌​​‍‌‌​​‍​​‍​​​​‍‌‌‍​​‌​​​​​​‍​​‌​​​​‍​‌‌‌‍​‌​‌​​‍‌‌​​‍​​‍​‍‌‌​‌‌‌​‌​​‍‍‌‍‍​‌‍‌‌‌‍​‌‌‍‌​‌‍‍‌‌‍‍‌‍‌​‍​‍‌‌

*Independent user trial: 130 participants over 12 week​​​​‌‍​‍​‍‌‍‌​‍‌‍‍‌‌‍‌‌‍‍‌‌‍‍​‍​‍​‍‍​‍​‍‌​‌‍​‌‌‍‍‌‍‍‌‌‌​‌‍‌​‍‍‌‍‍‌‌‍​‍​‍​‍​​‍​‍‌‍‍​‌​‍‌‍‌‌‌‍‌‍​‍​‍​‍‍​‍​‍‌‍‍​‌‌​‌‌​‌​​‌​​‍‍​‍​‍‌‍​‌‌‍​​‍‌‌​‌‍​‌‌‍‍‌‍‍‌‌‌​‌‍‌​‍‌‌‍​‌‍‌‌​​‍‍‌‍‍‌‍‌‌‌‌​‌‍​‌‍‍‌‌‍‌‍‌‍‌​‍‍‌‍​‌‌​​‌​​​‍‌‍‍‌‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‌‍‌‌‌‍‌​‌‍‍‌‌‌​​‍‌‍‌‌‍‌‍‌​‌‍‌‌​‌‌​​‌​‍‌‍‌‌‌​‌‍‌‌‌‍‍‌‌​‌‍​‌‌‌​‌‍‍‌‌‍‌‍‍​‍‌‍‍‌‌‍‌​​‌​‌‍​‌‍​​​​​‌‌‍​‌‍​‍​‍​​​‌​‍‌​‍​‌‍​​‌‍​‌​​‍‌​‌​‌‍‌‍‌‍​‍​‌‍​‍‌​‍‌​‌‌‌‍‌​​‍‌​‍‌​‌​​‌​​‍‌‍​‍‌‍​​​​‌‍‌‍‌‌​​‌‍‌‍​​‌​​​​‍‌‌​‌‍‌‌​​‌‍‌‌​‌‌‍​‌‍‌‍​‌‍​‌‌‍​‌‍‍‌‌​‌‍‌‌‌‍‌​‌‌​​‌​‍‌‍‌‍‌​‌‌‌‌‍​‌‌​‌‌​​‌‍​‌‌‍‌‌‍‌‌‌​‌​‌‍‌‍​‌‌‌‌‍‌‌‍‌‌‌‍‍‌‌​​‍‌​​‌‍​‌‌‌​‌‍‍​​‌‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‍‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‌‌​‌‌‌​​‍‌‌‌‍‍‌‍‌‌‌‍‌​‍‌‌​​‌​‌​​‍‌‌​​‌​‌​​‍‌‌​​‍​​‍​​​​‍‌‌‍​​‌​​​​​​‍​​‌​​​​‍​‌‌‌‍​‌​‌​​‍‌‌​​‍​​‍​‍‌‌​‌‌‌​‌​​‍‍‌‍‌​‌‍‌‌‌​‌‍​‌​‍‌‍‍‌‌​​‌‌​‌‍‍‌‌‍‌‍‍​‌‍​‍‌‍​‌‌​‌‍‌‌‌‌‌‌‌​‍‌‍​​‌‌‍‍​‌‌​‌‌​‌​​‌​​‍‌‌​​‌​​‌​‍‌‌​​‍‌​‌‍​‍‌‌​​‍‌​‌‍‌‍​‌‌‍​​‍‌‌​‌‍​‌‌‍‍‌‍‍‌‌‌​‌‍‌​‍‌‌‍​‌‍‌‌​​‍‍‌‍‍‌‍‌‌‌‌​‌‍​‌‍‍‌‌‍‌‍‌‍‌​‍‍‌‍​‌‌​​‌​​​‍‌‍‌‍‍‌‌‍‌​​‌​‌‍​‌‍​​​​​‌‌‍​‌‍​‍​‍​​​‌​‍‌​‍​‌‍​​‌‍​‌​​‍‌​‌​‌‍‌‍‌‍​‍​‌‍​‍‌​‍‌​‌‌‌‍‌​​‍‌​‍‌​‌​​‌​​‍‌‍​‍‌‍​​​​‌‍‌‍‌‌​​‌‍‌‍​​‌​​​​‍‌‍‌‌​‌‍‌‌​​‌‍‌‌​‌‌‍​‌‍‌‍​‌‍​‌‌‍​‌‍‍‌‌​‌‍‌‌‌‍‌​‌‌​​‌​‍‌‍‌‍‌​‌‌‌‌‍​‌‌​‌‌​​‌‍​‌‌‍‌‌‍‌‌‌​‌​‌‍‌‍​‌‌‌‌‍‌‌‍‌‌‌‍‍‌‌​​‍‌‍‌​​‌‍​‌‌‌​‌‍‍​​‌‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‍‌‍​‌‍‌‍‍‌‌​‌‍‌‌‌‍‍‌‌​​‍‌‌​‌‌‌​​‍‌‌‌‍‍‌‍‌‌‌‍‌​‍‌‌​​‌​‌​​‍‌‌​​‌​‌​​‍‌‌​​‍​​‍​​​​‍‌‌‍​​‌​​​​​​‍​​‌​​​​‍​‌‌‌‍​‌​‌​​‍‌‌​​‍​​‍​‍‌‌​‌‌‌​‌​​‍‍‌‍‌​‌‍‌‌‌​‌‍​‌​‍‌‍‍‌‌​​‌‌​‌‍‍‌‌‍‌‍‍​‍​‍‌‌

Backed by science, trusted by experts.

Dr Shotter Expert Headshot

Dr Sophie Shotter

Our award-winning aesthetician, skin care specialist and beauty press go to

Eva Expert Headshot

Eva Proudman

Leading UK Trichologist & hair expert, who helped us formulated our haircare range

Dr Barton Expert Headshot

Dr Barton

Women's health & menopause doctor, supporting women to navigate their changing body

Dr Dave

Dr Dave

Our resident senior scientist & clinical expert

FAQ

Why did we create the collagen shampoo & conditioner?

Most thickening hair products rely on heavy formulas that leave hair weighed down and flat. We created the UK’s first collagen complex shampoo and conditioner to do the opposite - to thicken, volumise and nourish thinning hair while keeping it light, lifted, and full of life.

How does our thickening shampoo & conditioner work?

Just a small amount delivers powerful, visible results:

  • Hair looks and feels thicker, stronger, and more volumised
  • Our collagen complex formula works from within to strengthen strands and reduce breakage
  • On the outside, it wraps the hair cuticle for added protection and long-lasting shine
  • Reduces shedding and improves overall hair health

All without weighing your hair down.

Who should use the Collagen Complex Shampoo & Conditioner?

Our Collagen Complex system is designed for anyone with thin, fine, or thinning hair who wants more volume, strength, and gloss.

Safe for coloured and chemically-treated hair - testing showed no colour fade after 12 weeks

Suitable for all hair types and textures

Please note: contains collagen, so not suitable for vegetarians or vegans

How much should I use and how often should I use it?

You only need to use a small amount of the shampoo and conditioner as they are powerful and effective - we recommend using an amount that’s roughly the size of a 10p coin.

We recommend you wash your hair a minimum of 5 times a week for the optimum results, however we understand this isn’t suitable for all lifestyles. Every other day will also work well, but it may take longer to see results.