Hair Gain Shampoo

Hair Gain Shampoo

Healthy hair from within

Price range: $54.99 through $69.99

369 Reviews

Size

Start Kit
Refill

Clear

A refillable, sulphate-free shampoo enriched with peptides, vitamins and marshmallow root that cleanses, hydrates and strengthens hair from the very first wash. It soothes the scalp, reduces breakage and leaves hair softer and shinier. Start with the Starter Kit, then top up with the 250ml Refill whenever you run low. Vegan, Halal and free from parabens, silicones and sulphates.

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Cruelty Free
Designed For All Hair Types
Fully Recyclable
Halal Certified
Kind To Your Scalp
No Parabens or Sulphates
Vegan Friendly

How it works

How to use

Apply to wet hair and massage into the scalp, working through to the ends.
First cleanse: rinse to remove surface oil, dirt and styling product.
Second cleanse: lather again for a deeper clean that lets the nourishing ingredients get to work.
Rinse thoroughly.
Follow with the Hair Gain Hydrating Conditioner.

Key ingredients

Ingredient	Role
Pea peptide (Pisum Sativum Peptide)	Reinforces strands to reduce breakage
Marshmallow root extract (Althaea Officinalis)	Soothes the scalp and locks in moisture
Vitamins B3, B5, B6, C and E	Nourish hair and scalp
Caffeine, phytantriol	Energise the scalp; help protect strands
Jojoba and sunflower seed oils, glycerin	Hydrate and soften

Results

Up to 86% less hair fall and breakage from the first use*
Deep, lasting hydration and a soothed scalp
Stronger strands with less breakage
Thicker, fuller-looking hair with natural shine
*Independently tested (brushing test), February 2026.

Warnings

For external use only.
Avoid contact with eyes; if contact occurs, rinse thoroughly with water.
Discontinue use if irritation occurs.
Keep out of reach of children.

How to refill

Carefully unscrew the frosted base from the pink neck and pump.
Unscrew the empty shampoo refill from the pink neck.
Rinse the empty refill and place it in your recycling.
Remove the lid from the new shampoo refill and screw it into the pink neck and pump until secure.
Screw the frosted base back onto the pink neck and pump.

Hair Gain Hydrating Shampoo FAQs

What is the Hair Gain Hydrating Shampoo?

A refillable, sulphate-free shampoo with peptides, vitamins and marshmallow root that cleanses, hydrates and strengthens hair.

What is in the Start Kit?

One refillable bottle made from 100% recycled plastic, plus one 250ml shampoo refill.

What is the difference between the Start Kit and the Refill?

The Start Kit includes the reusable bottle and pump. The Refill is the 250ml shampoo only, to screw into your existing bottle or use on its own.

Why wash twice?

The first wash lifts away surface oil and product build-up. The second gives a deeper clean and lets the nourishing ingredients reach the scalp and hair.

Is it safe for coloured or treated hair?

Yes. It is suitable for all hair types, including coloured and chemically treated hair.

Is it sulphate free?

Yes. It contains no sulphates, parabens or silicones, and is dermatologically tested and trichologist approved.

How do I refill the bottle?

Unscrew the frosted base, remove the empty refill from the pink neck, screw in the new refill, then replace the base.

What results can I expect?

Softer, more hydrated hair from the first wash. In an independent brushing test, it gave up to 86% less hair fall and breakage from the first use*.

Is it vegan and sustainable?

Yes. It is vegan, Halal and cruelty free certified. The bottle and refills are made from 100% recycled plastic and are 100% recyclable.