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10 Best thickening shampoos

Welcome to our top 10 product reviews for thickening shampoos. We've scoured the market to bring you the best of the best, with products ranging from a 7.1 score up to a whopping 9.8 score!

Updated December 2025
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Grow Me® Hair Growth Shampoo - Not just a Caffeine Shampoo we include Biotin, Argan Oil, Rosemary, Niacinamide. Hair Thickening Treatment for Women & Men with progressed thinning.
9.2
Very Good

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Grow Me® Hair Growth Shampoo - Not just a Caffeine Shampoo we include Biotin, Argan Oil, Rosemary, Niacinamide. Hair Thickening Treatment for Women & Men with progressed thinning.

Main Highlights

BOOST YOUR CONFIDENCE: Struggling with thinning, fine, weak, or damaged hair? Our Grow Me Shampoo is uniquely formulated to help reduce hair loss due to breakage, helping you achieve longer, stronger thicker-looking hair you’ve always dreamed of.

NOT YOUR ORDINARY SHAMPOO: As a recipient of the UK’s highest business honour, the Queen’s Award, this shampoo is a true game-changer. Our Grow Me Advanced Formula not only promotes healthier, stronger hair growth by energising blood flow around hair follicles, but it also helps move blood flow into empty follicles, revitalising them for new growth. By stimulating the deep dermal vascular plexus, it ensures optimal nutrient delivery to your scalp. You may even experience a mild, itchy tingling sensation—an indication that the formula is actively working to help you grow strong, resilient hair.

PREMIUM, NATURAL INGREDIENTS FOR OPTIMAL HAIR GROWTH: Our Grow Me Shampoo is more than just a caffeine shampoo—it’s a powerful blend of high-quality, natural ingredients designed to target the root causes of hair thinning. Infused with Biotin, Hydrolyzed Lupin Protein, Argan Oil, Rosemary, and Niacinamide, this formula doesn’t just thicken hair; it nourishes and revitalizes, ensuring you grow strong, healthy hair. Rosemary's antioxidant and anti-inflammatory properties enhance scalp health, reduce grey hair, and create the perfect environment for robust hair growth, making your hair healthier and more resilient.

TRUSTED BY EXPERTS: Endorsed by leading trichologists, hair surgeons, and recommended by chemotherapy ward nurses, our innovative Grow Formula offers more than just hair care—it provides the confidence and effectiveness you need to grow stronger, healthier hair.

YOUR NEW UPGRADE: Unlike typical wash-and-go shampoos, Watermans Grow Me Hair Growth Shampoo is designed for optimal effectiveness. For best results, leave it on your scalp to allow the superior ingredients to penetrate deeply, targeting the hair follicles and delivering essential nutrients precisely where they are needed most, as recommended by trichologists, to help you grow strong hair.

ESTABLISHED IN 2012 & MADE IN THE UK: Proudly made in the UK our shampoo is packed full of natural ingredients, cruelty-free, sulphate & paraben -free, pH neutral for your scalp, and approved by the Vegan Society.

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9.2
Very Good
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Why Trust One Clear Winner?

One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched

Why Trust One Clear Winner?

One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched