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1
Best shampoo for thickening
Patricks SH1 Thickening Shampoo

The majority of our testers said this shampoo provided an instant volumising effect to ends, making hair look thicker and fuller.
Our panel found this was especially gentle on those with sensitive scalps and left a shinier head of hair as a result. An added bonus is the fragrance, a blend of vetiver and amber.
Key specifications
Volume | 200ml |
---|---|
Paraben free | Yes |
Silicone free | No |
Sulphate free | Yes |
2
Best for dry hair
Kevin Murphy Stimulate Me Wash

Dirty innuendos aside, the ‘Stimulate Me’ shampoo from celebrity hairdresser Kevin Murphy’s range came out on top for hydrating parched hair, while simultaneously stimulating growth.
Our testers noticed less shedding, and all agreed that their hair loss issues had improved by the end of the trial. It proved effective at boosting thickness in the lab, too.
Key specifications
Volume | 250ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
3
Best for volume
Bumble and Bumble Full Potential Hair Preserving Shampoo

This shampoo left hair shiny and silky, making it easier to style after washing. It also provided a pleasant tingling sensation to the scalp, which testers said they enjoyed.
While testers didn’t spot any significant hair growth, there was a noticeable difference in how full the hair looked, as well as reduced hair breakage.
Key specifications
Volume | 250ml |
---|---|
Paraben free | Yes |
Silicone free | N |
Sulphate free | Yes |
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4
Best for hair growth
L'Oréal Professionnel Serioxyl Clarifying & Densifying Shampoo

If speed is of the essence for tackling those sparse spots, this shampoo had a visible impact on ramping up hair growth.
It impressed our lab team by improving both hair density and thickness, while it left our testers raving about their newfound fullness up top and it soothed itchy scalps to boot.
Key specifications
Volume | 250ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
5
Best for smoothing
Redken Extreme Shampoo

Now 10% Off
Lid looking more Boris than Beckham? It's time to find a product with some seriously smoothing powers.
This shampoo left parched, messy mops looking and feeling much thicker, healthier and altogether smarter. So much so that we challenge you to stop running your fingers through it.
Key specifications
Volume | 300ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | No |
6
Best for brittle strands
Kerastase Genesis Bain Hydra-Fortifiant

Now 25% Off
If dry, brittle hair is getting you down, grab this guy to rectify things, stat. It thoroughly cleaned roots, leaving most testers with replenished, healthier heads of hair.
The thick lather helped battle any product build-up, with many testers agreeing that it left hair softer and in better condition than before. Talk about a transformation.
Key specifications
Volume | 250ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
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7
Best for improving hair health
Dr Barbara Sturm Anti-Hair Fall Shampoo

If you’re not quite sold on the silver fox look, this anti-shedding shampoo promises to keep hair ageing to a minimum.
It aced our lab test for improving thickness and density, and our panel liked its gel-like texture and scent. Hair was left feeling stronger and looking healthier.
Key specifications
Volume | 250ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
8
Best vegan option
Aveda Botanical Repair by Aveda Strengthening Shampoo

No dating profile is complete without an animal-loving picture, but why not go the extra mile and invest in this vegan shampoo for your shower.
It helped detangle knots for proud man bun owners, and many thought their hair looked stronger and more hydrated after washing. It got the job done quickly, too, with one tester enjoying immediate results.
Key specifications
Volume | 200ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
9
Best scalp-exfoliating shampoo
Philip Kingsley Density Thickening Shampoo

Dandruff is a common problem, but it can be embarrassing, so let's nip it in the bud. This shampoo contains BHAs (aka beta hydroxy acids, aka an acne-busting skincare staple) to exfoliate dead skin gently.
The idea of putting acids on your scalp may sound alarming, but no testers reported any irritation, and everyone found it effective at sending dry flakes packing. It helped to reduce shedding and left hair looking thicker.
Key specifications
Volume | 200ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
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10
Best for strengthening
Percy & Reed Give Me Strength Strengthening Shampoo

Now 18% Off
It’s common sense, really: if your hair is stronger, it’s less likely to fall out and leave you with baldy bits.
This shampoo gave thirsty strands some much needed H2O, taming flyaways and reducing fallout. This all helped make hair more manageable for combing and styling, with many testers seeing fewer breakages and more volume at the roots.
Key specifications
Volume | 250ml |
---|---|
Paraben free | Yes |
Silicone free | Yes |
Sulphate free | Yes |
Beauty and Grooming Testing Manager
Maria is our Beauty and Grooming Testing Manager, and since joining in mid-2022, she has managed the testing for mutiple categories including scalp scrubs, collagen supplements and retinol serums. In addition to her master's degree in chemical engineering and a diploma in cosmetic science, she recently received her MBA from the London College of Fashion, focusing on case studies within the beauty industry. Prior to joining the company, she worked within the global technical team at the Estee Lauder Companies for over six years, collaborating with the chemists and engineers to launch luxury beauty products at scale and to quality. She has also worked as a formulation scientist within the pharmaceutical industry and takes this evidence based approach into all her product testing.
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