It’s finally here—the launch we’ve all been waiting for! We’re delighted to introduce our Hydrating Shampoo and Conditioner, a trichologist-approved, clinically tested duo that will transform your wash day. This next-generation shampoo and conditioner deeply hydrates, strengthens, and smooths hair from the very first wash. It’s everything you love about Hair Gain—innovative, science-led, nourishing, and luxurious—now reimagined for your daily routine.
Designed with sustainability and self-care at its core, the shampoo and conditioner deliver intense hydration and strength to both hair and scalp. The result? Hair that feels softer, smoother, and visibly healthier—with moisture that lasts up to 72 hours.
Why This Is The Best Shampoo And Conditioner For Hydrated, Healthy Hair
Packed with a powerhouse blend of peptides, hair vitamins, and marshmallow root, this duo will hydrate, strengthen, and restore vitality from root to tip. Here’s the science behind these haircare superheroes:
- Peptides improve the mechanical properties of hair fibres, boosting elasticity and reducing the dreaded breakage.
- Marshmallow Root Extract stimulates the cells that power hair growth while soothing the scalp.
- B Vitamins, including Panthenol (pro-vitamin B5) and Niacinamide (vitamin B3), nourish the scalp and strengthen the hair, making hair appear thicker, softer and stronger.
Proven Results You Can See And Feel
Independent laboratory testing in September 2025 has shown that Hair Gain’s Hydrating Shampoo and Conditioner reduces hair fall and breakage by up to 64%. And this is after just one use!* Meanwhile, an independent consumer study revealed that 94% of participants agreed their hair felt nourished after one use, 89% said their hair looked visibly healthier, while 84% agreed their hair stayed hydrated for 72 hours. And 87% said they would recommend the duo to a friend.**
Trichologist-Approved Results
The exceptional results across lab and consumer studies were echoed by expert trichologist trials. Consultant Trichologist Samantha Stewart RIT said:
“I absolutely love the new Hair Gain Hydrating Shampoo and Conditioner. The shampoo delivers intense hydration and moisture balance while initiating the detangling process from the very first application. My hair feels cleansed yet nourished, never stripped. The conditioner leaves only softness and manageability — no residue. My naturally curly hair has been transformed; frizz is gone, my colour looks more vibrant, and my hair reflects the most beautiful, healthy shine.”
Meanwhile, Trichologist and hair stylist Rachel Valentine praised the range for delivering noticeable results, bringing strength and shine back to even the driest, colour-treated, or delicate hair. hair types.
Meet The Superstars

The Hair Gain Hydrating Shampoo is an intensely nourishing, peptide powered haircare hero that cleanses, hydrates and strengthens the hair and the scalp. The amazing blend reduces breakage, calms the scalp and makes strands more damage resistant.
The Hair Gain Hydrating Conditioner has a luxurious, silky formula that strengthens each strand while boost volume, shine and manageability. Hair is left soft, glossy and strong, with instant body.
Sustainable Haircare: Refillable Shampoo And Conditioner Bottles
True to Hair Gain’s commitment to sustainability, the new range has been thoughtfully designed for a more responsible beauty routine. Each Hydrating Shampoo and Conditioner Starter Kit includes refillable shampoo and conditioner bottles, crafted from 100% recycled and fully recyclable materials. Refills are available individually or as a duo. It couldn’t be simpler to reuse, refill and reduce waste without compromising on quality. This eco-friendly system makes every wash support healthier and stronger hair, while being kind to your tresses and the planet!
The range is vegan, halal-certified and dermatologically tested. And it's free from parabens and silicones, making it safe for all hair types. Including the most sensitive of scalps and colour-treated hair. The sulfate free shampoo and conditioner offer a gentle yet very effective cleanse without stripping the hair of its natural oils. And for life on the go, the Hydrating Shampoo and Conditioner Travel Duo offers the same nourishing formula in perfectly sized bottles for weekends away or holidays.
A New Era Of Haircare

For founder Lucy Palmer, the Hydrating Shampoo and Conditioner launch is the result of years of development and dedication:
“Hair Gain fans have long awaited a Shampoo and Conditioner from us, and we’ve put our heart and soul into creating this range. We worked with incredible chemists and trichologists to develop a formulation so effective it delivers visible results from the very first use. It’s designed to give you the softest, shiniest, healthiest hair of your life.”
Clinically proven hydration and strength from the first wash, Hair Gain’s new Hydrating Shampoo and Conditioner redefine what it means to care for your hair — and your confidence.
Available now at hairgainnow.com.
Read More
Marshmallow Root: Amazing Benefits for Hair and Scalp Health
Hydrated Hair: Why Moisture Matters for Strong, Healthy Locks
Product Build Up & The Effects On The Scalp
* Independently tested (Brushing Test) September 2025. Results achieved when using the shampoo & conditioner together as a regime.
** Data from an Independent Consumer Perception Survey of 67 women using the shampoo & conditioner for 2 weeks. (72 hours post use)