The Hair Gain Hydrating Shampoo & Conditioner has garnered widespread praise from beauty enthusiasts for its ability to transform damaged, dry, and lacklustre hair. Developed by leading Trichologists, the duo aims to nourish, strengthen, and boost hair, leaving it soft, visibly healthier, and full of vitality. A study commissioned by the brand showed that the formula reduced hair fall and breakage by 86% after just one use, while consumer trials indicated hydration lasting up to 72 hours after washing. Additionally, 84% of participants agreed their hair looked glossier.
Powerful Ingredients and Results
The shampoo and conditioner are powered by a blend of Peptides, Marshmallow Root, and B Vitamins. Peptides strengthen the internal structure of each strand, enhancing elasticity and resistance to daily breakage. Marshmallow Root soothes the scalp and seals in moisture for long-lasting hydration and softness. The B Vitamin Complex nourishes from root to tip, restoring vitality, shine, and strength. The formula is vegan, halal-certified, dermatologically tested, and free from parabens, silicones, and sulphates, making it suitable for all hair types, including colour-treated and sensitive scalps.
Shopper Testimonials
Customers have left glowing reviews on the brand's website, contributing to a 4.7-star rating. One 60+ user with thinning hair said: "As a 60+ lady with thinning hair, I've spent fortunes on many, many products over the last few years so decided to try this. I bought the starter kit of shampoo & conditioner and couldn't believe my eyes! It gives so much volume and this will now be my forever." Another reviewer noted: "By far the best products I have used in a very long time. My curls are soft, bouncy and defined and last longer between washes." A third commented: "Out of all the products I have tried this is genuinely the best, my scalp is also less dry and itchy and I visibly have no dandruff which I have struggled with."
Trichologist Approval
Consultant Trichologist Samantha Stewart MIT has endorsed the range, stating: "I absolutely love the 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, which is rare for curly textures. The conditioner has incredible slip and leaves no residue, only softness and manageability. Every ingredient has been carefully selected to support scalp and hair health, from hydration and elasticity to strengthening and protecting the cuticle. My naturally curly hair has been transformed, frizz is a thing of the past and my hair has a beautiful healthy shine."
Starter Kit and Value
The Hair Gain Starter Kit includes two refillable bottles made from 100% recycled materials and 100% recyclable, along with 250ml refill cartridges of shampoo and conditioner. It is available as a one-time purchase for £36 or on a subscription model for £22.95 per delivery. The brand emphasizes sustainability as a core part of its ethos.
Comparison to Competitors
The Hair Gain duo competes with products like Coco & Eve's Super Hydrating Shampoo and Conditioner Duo (£46) and Beauty Pie's Stronger Shinier Hair duo (£50). While most reviews are positive, one user noted minimal difference after a few days of use, saying: "Only had this a few days. I wash my hair daily and haven’t noticed much difference yet. Having used the hair mask and hair gummies which do work I hope the shampoo and conditioner work as effectively." Nevertheless, the majority of users report thicker, fuller, shinier, and softer hair.



