TOP 12 BEST HAIR SERUMS
It’s no secret, the best hair serums are a game-changer when it comes to enhancing your strand’s health, shine and overall appearance. Whether you're seeking to restore damaged lengths, reduce frizz or promote growth, the right serum can address a variety of concerns.
From nourishing formulas packed with peptides and biotin to advanced treatments that tackle scalp health and improve hair density, there’s a serum for everyone. With that in mind, in this guide, we’ve rounded up the best hair serums to transform your tresses once and for all.
Ready to give your locks the love they deserve?
OUR TOP 12 BEST HAIR SERUMS
- The Ordinary Multi-Peptide Serum for Hair Density
- Gisou Honey Infused Repair Serum
- Oribe Hair Travel Alchemy Treatment Serum
- OLAPLEX No.9 Bond Protector Nourishing Hair Serum
- Coco & Eve Boost Therapy Tripeptide Hair Density Serum
- Drybar Liquid Glass Finishing Serum
- JVN Instant Recovery Serum
- Grow Gorgeous Hair Growth Serum
- HAIR Rituel by Sisley Revitalising Fortifying Serum
- Virtue Damage Reverse Serum
- Briogeo Destined For Density MegaStrength+ Caffeine + Biotin Peptide Density Serum
- OUAI Scalp Serum
BEST HAIR SERUMS
The Ordinary Multi-Peptide Serum for Hair Density
381
£20.50
Earning its reputation as one of the best hair serums on the market, The Ordinary’s Multi-Peptide Serum for Hair Density supports fuller, thicker tresses with every use. Blending peptides, caffeine and biotinoyl tripeptide with a handful of plant-based extracts, the leave-in formula encourages visible hair density over time. And the best bit? This hair hero is cruelty-free and vegan too – benefiting both your mane and Mother nature.
Gisou Honey Infused Repair Serum
63
£35.00
Paying homage to Negin Mirsalehi’s mother’s secret honey-infused hair oil recipe, Gisou’s Honey Glow Repair Serum works overtime to repair, nourish and protect your locks, all while wrapping them in the most delectable scent. Supercharged with microdroplets of pure encapsulated honey, this multitasker locks in moisture, while boosting supreme shine. Plus, with the addition of vitamins, amino acids and antioxidants, it hydrates and revives lacklustre locks from the inside out, making everyday a good hair day.
Oribe Hair Travel Alchemy Treatment Serum
2
£31.00
Targeting fragile, breakage-prone strands, Oribe’s Hair Travel Alchemy Treatment Serum reinforces lengths from root to tip while enhancing shine and vitality. Powered by the brand's iconic complex of watermelon, lychee and edelweiss flower, this blend protects your mane against dryness, damage and the colour-depleting effects of various elements. In other words, the dual-action formula defends against heat and environmental stressors while actively repairing weak areas from within. Impressive, we know.
OLAPLEX No.9 Bond Protector Nourishing Hair Serum
301
£28.00
Going beyond the basics of the best hair serums, OLAPLEX’s No. 9 Bond Protector Nourishing Hair Serum utilises the brand’s signature bond-building technology to shield locks from pollution and heat damage up to 232°C while actively repairing and strengthening their internal structure. Ideal for all hair types, this staple is infused with red algae extract to form a weightless shield around each strand, helping to prevent breakage, reduce static and add shine without leaving a greasy finish. The result? A mane that’s soft to the touch and easy to style.
Coco & Eve Boost Therapy Tripeptide Hair Density Serum
1
£28.00
Harnessing the thickening powers of peptides and unique actives like redensyl and procapil, Coco & Eve’s Boost Therapy Tripeptide Hair Density Serum promotes the fuller appearance of tresses. How? We’re glad you asked…Strengthening and stimulating your scalp, it encourages the growth of dense strands while the fusion of caffeine, biotin and aloe vera nourishes and hydrates, creating an optimal environment for hair growth. Cue longer, fuller locks in 3,2,1.
Drybar Liquid Glass Finishing Serum
£25.00
Quenching your tresses’ thirst the Drybar Liquid Glass Finishing Serum envelopes hair in weightless hydration and reflective shine. Fuelled by an array of oils (we’re talking jojoba, raspberry seed, rosemary leaf and clover leaf), this innovative creation features a unique liquid glass technology that creates a smooth, reflective surface on each strand, enhancing shine and promoting a mirror-like finish. Did someone say supermodel swishes?
JVN Instant Recovery Serum
78
£28.00
Whether your strands are damaged from heat styling, colour treatments or environmental stressors, JVN’s Complete Instant Recovery Serum works in synergy with your mane to repair and hydrate, giving your locks a fresh, revived look. Plus, with the ability to shield your hair from the harmful effects of styling tools, it maintains your tresses’ integrity while offering effective frizz control.
Grow Gorgeous Hair Growth Serum
52
£45.00
Going beyond its call of duty, Grow Gorgeous’ Hair Growth Serum Intense doesn’t just lengthen your locks, it also fortifies lengths from root to tip making your mane appear fuller, healthier and more voluminous. Combining caffeine and biotin with peptides and hyaluronic acid, the unique blend targets hair follicles to reduce the risk of thinning strands while creating the optimal environment for your tresses to thrive.
HAIR Rituel by Sisley Revitalising Fortifying Serum
8
£174.00
Marrying plant-based actives with innovative technology, HAIR RITUEL By Sisley’s Revitalizing Fortifying Serum For The Scalp targets the root cause of weak hair. Reinforced with the brand’s Fortifying Vitalising Complex, this strand-saving solution harnesses the nourishing powers of zinc, copper, magnesium and multiple vitamins to strengthen and densify your locks while protecting your natural colour. What’s more, its luxurious and soothing application offers a spa-like experience, levelling up any hair care regime.
Virtue Damage Reverse Serum
12
£59.00
Infused with the highest concentration of the brand’s bioidentical protein, Alpha Keratin 60ku, Virtue’s Damage Reverse Serum strengthens hair and enhances its appearance with a rich blend of peptides. As its biomimetic peptides help boost smoothness and shine, its advanced peptide matrix technology nurtures the scalp and improves the overall health of your mane. Plus, featuring a UV protection complex, it guards against harmful UV rays, preserving both hue and hydration.
Briogeo Destined For Density MegaStrength+ Caffeine + Biotin Peptide Density Serum
19
£48.00
For those seeking to enhance hair density and combat thinning, Briogeo's Destined for Density MegaStrength+ Serum offers a clinically tested solution you can rely on time and time again. Developed with a potent blend of caffeine, biotin and copper peptides, it stimulates the scalp to promote a healthier, fuller-looking finish. Its lightweight, non-greasy texture ensures easy application without weighing down your locks and it's suitable for all hair types, including colour-treated and chemically processed manes.
OUAI Scalp Serum
226
£48.00
Last, but not least in our round up of the best hair serums is OUAI’s Scalp Serum. Packed with a potent fusion of salicylic acid, biotin and kojic acid, this lightweight must-have deeply exfoliates, removes buildup and balances the scalp. What’s more, the addition of peppermint oil refreshes and soothes irritation, while hyaluronic acid keeps the scalp moisturised without any greasiness. Designed to target issues such as dryness, flakiness and excess oil, it’s a simple yet effective step in your hair care routine that works to prevent hair thinning and encourage stronger, healthier strands.
BEST HAIR SERUMS FAQS
Is serum better than hair oil?
When it comes to looking at the best hair serums and oils, you can’t compare the too. Why? Because they both have different purposes. While hair serums are typically lightweight treatments designed to address specific concerns like frizz control, shine, split ends or scalp health, oils are more nourishing and deeply hydrating, often used to treat dryness, strengthen hair and restore moisture.
Does hair serum actually work?
Yes, hair serums can be very effective. Many serums provide immediate benefits such as smoother, shinier strands and a frizz-free finish while others, particularly those focused on scalp health or strengthening, provide longer-term improvements. A case in point? Serums that promote hair growth may take several weeks or months to show visible results. So, when picking the best hair serum for you it’s important to opt for one suited to your hair’s specific needs - whether that be to smooth, hydrate or protect.
What hair serums do dermatologists recommend for hair growth?
When it comes to hair growth, dermatologists generally recommend hair serums that contain ingredients known to promote scalp health, improve hair density and encourage follicle stimulation. Key ingredients include biotin, caffeine, peptides and niacinamide.
So, no matter your hair concern, the best hair serum can make all the difference. With our top picks, you're one step closer to achieving the healthy, shiny and voluminous mane you've always dreamed of. Happy hair days incoming…
Cult Beauty’s Senior SEO Copywriter, Trifonia started out in the industry when bold brows were just becoming a ‘thing’, and shares a passion for all things fashion and beauty. Currently embracing her curly girl journey (after endless years of straightening her strands), she is finally reverting to her natural ways! When Triffy isn’t busy testing out the latest curl-saving solutions, you’ll find her binging the latest reality TV show or on a long walk listening to her ever-evolving country music playlist.
