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Bestseller

Collagen Complex Hair Thickening Shampoo & Conditioner Duo

£28.00£34.00
Recommended

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.

Clinically Proven:
Up to 20% thicker hair
Strengthens & reduces breakage
Adds volume, shine & hydration

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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.

More Powerful Together

Using our Hair Pro Supplement to Renew and Rebuild with our Collagen Shampoo & Conditioner

skin pro
Hair Pro: renew & rebuild

stronger, thicker, fuller-looking hair

Our original collagen formula already delivers amazing results for your hair and scalp — but Hair Pro: Renew & Rebuild takes it further. With 8,000mg of collagen, plus KERANAT™, zinc and biotin, this upgraded formula supports stronger, thicker, shinier hair and a healthier scalp.

NO MORE GUESSWORK

frequently asked questions

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.