10 best hair growth serums for longer, fuller hair (2024)

Score: 83/100

Our best hair growth serum trumped all others for improving appearance and overall health, and limiting breakages for most of our panel. Lab test results backed this up, showing an improvement in hair thickness and density.

Testers appreciated the smoothness and hydration the serum gave their parched strands, with everyone noticing less dandruff and experiencing less irritation.

Not only was hair shinier and more voluminous after use, but everyone also spotted fewer split ends. Most agreed it had a positive impact on their hair loss problem after eight weeks, with the majority intending to keep using it.

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Score: 81/100

When world-renowned skin doctor, Dr Barbara Sturm, branched into hair care, we had high hopes. Happily, her anti-hair fall serum didn't disappoint.

Packed with strengthening vitamin B5 and camellia extracts, our panel rated its lightweight texture yet powerful anti-breakage powers, with many reporting less fallout and shedding after use.

It left their strands feeling and looking thicker, with nearly everyone enjoying superior hair regrowth after eight weeks. It proved effective at improving thickness and density in our lab test, too.

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Score: 81/100

The spray bottle makes it easy to coat your entire scalp in this potent scalp revitaliser. It gave one happy tester noticeable results in just two weeks, and it aced our lab test for improving thickness and density.

Our panel raved about how much healthier and stronger it left their hair looking. Less shedding occurred and most noticed an improvement in regrowth by the end of the trial. The scent was also a hit, thanks to a blend of natural oils.

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Score: 80/100

Dry scalp suffers rejoice! This nourishing formula blends ginger root and Aminexil – L'Oreal's signature ingredient aimed at improving blood flow to follicles – to relieve itchiness and dryness and rejuvenate your scalp. Happy scalp, happy hair, after all.

Everyone said their hair looked dandruff-free and more hydrated after use, with many also seeing shinier, smoother strands. Their hair also looked healthier, with many testers reporting fewer breakages and thicker ends.

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Score: 79/100

Nothing claiming to help boost hair health and thickness comes cheap, but this budget-friendly treatment works wonders.

Better still, it does what it says on the tin. Featuring a strong burst of caffeine powder to jolt your hair follicles into action, it scored highly in our lab test for improving thickness and earned praise from our testers for reducing fall-out and leaving hair looking healthier.

Flakes were banished for all, while everyone with colour-treated hair was impressed by a boost in vibrancy.

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Score: 76/100

Not only is an itchy scalp a nuisance, but it can also be a hair health red flag. Get it back on track with this daily toner, which successfully cooled and calmed our panel's irritated heads.

"My hair fall has significantly slowed down and I can see baby hairs growing," said one tester, while most of the panel saw an improvement in volume, strength and hydration.

Testers also noted less shedding and fewer breakages, with almost all agreeing that it helped their hair loss concerns.

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Score: 75/100

Designed with curls in mind, this soybean and ginger formulation aims to reshape your kinks and coils, as well as making your hairline look and feel fuller.

One tester said their hair was now “soft and shiny and feels much fuller and stronger", while most the panel were pleased to notice less fallout. Most spotted an increase in volume and many saw an improvement in the thickness and hydration of their hair as well.

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Score: 75/100

Aiming to repair and restore even the most brittle of hair, this strengthening potion is full of essential oils and vitamins B3 and E, as well as aloe vera to hydrate and replenish stressed-out strands.

It excelled in our lab test for thickening and improving density, and it earned our panel's approval for speeding up hair growth and improving split ends, dryness and scalp irritation. One tester described it as “amazing”. Enough said.

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Score: 73/100

This luxe serum harnesses the power of naturally derived black bee honey to encourage hair growth and revitalise neglected locks. The brand also boasts a 'Women for Bees' initiative to encourage both female leadership and biodiversity, so you know your purchase is doing good in multiple ways.

The replenishing formula boosted hydration, leaving hair looking healthier and smoother for most of our panel. It relieved all scalps of dryness and irritation, while leaving hair looking thicker for almost everybody. One tester said their hair grew “much quicker” while using it.

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Score: 72/100

If your hair is on the finer side, the last thing you need is a slow-down in growth or overly heavy product. This lightweight serum didn't weigh down thinner hair, and left most of our testers with stronger, thicker tresses.

It helped reduce hair fallout for many, while also hydrating both scalps and dry ends. It cleared up dandruff for everybody and proved largely irritation-free.

It didn't score as highly in our lab test as hoped, but overall, it was described as a "gentle" and "relaxing" serum that helped to strengthen fragile strands.

Key specifications