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These are the serums we actually rate for every hair type and concern
From protecting colour to nourishing dry ends

Turns out, the difference between a good hair day and a bad hair day is a hair serum. From encouraging growth to preventing colour fading and even helping to speed up your blow-dry (yes, that’s a thing), today’s best hair serums are here to solve your every demand, no matter what your budget may be.
But, like the rest of the beauty industry, the shelves are awash with choice, so locating the best one to suit you can be challenging. Luckily, we've spritzed many a serum so can point you in the right direction. But there are a few things we have to run through first...
What is a hair serum used for?
Once you cleanse your skin, you likely go in with some sort of face serum to boost all the benefits of said cleanser, right? Well, think of hair serums in the same way. They can be used before or after you shower to give your hair that boost of shine or hydration that your shampoo may miss.
As we inch towards the summer months (hurrah!) a hair serum may be your new BFF if yours is prone to humidity puff-ups or if you're dealing with a bit more frizz than preferred. A frizz-focused product will often contain moisture shields, such as lanolin and silicone, to create a humidity-proof barrier over the hair, thus keeping a sleek and polished look.
Better yet, many of these clever formulas also contain heat protection, so it's a good idea to slather on a serum before you switch the straighteners on. Better yet, hair serums aren't just for wet hair; use one on dry ends to keep them looking healthy and soft throughout the day.
Do hair serums work for all hair types?
The hair world has come a long way in recent years, so no longer does a one-size-fits-all policy apply. If you're looking for some deep nourishment to heal split ends, Living Proof's Triple Bond Complex is an industry fave that stylists swear by.
Looking to protect that pay-day balayage? Get your hands on Gisou's Honey Infused Hair Repair Serum: it will provide insane shine, nourish brittle strands and restore following heat damage.
For curls that need a little encouragement, Andrew Fitzsimons' Fantasy Curls Serum will lend instant definition, while Monica Geller-style locks will benefit from Ouai's Anti-Frizz Creme. And because scalp health = hair health, we all should invest in The Nue Co's Supa Thick Hair Treatment.
Now the only question is, which bottle? Scroll down to shop the stand-out serums that really stood up to the beauty team’s scrutiny and thank us later for your glossy, healthy manes.
The best hair serums to invest in today...
Clare Stephenson is the Senior Fashion and Beauty E-commerce Writer for Cosmopolitan, ELLE and Harper’s Bazaar. She has been an e-commerce writer since 2022, creating matter-of-fact reviews and shopping pages filled with her favourite products for every budget and need – whether that’s a glow-giving foundation, a high-tech LED face mask or the perfect wear-with-everything blazer.
Alongside writing, Clare loves to be in front of the camera creating shopping content, putting viral products to the test to see which ones are truly worth the hype. Through her work, she has interviewed leading dermatologists, makeup artists and industry experts to bring readers trusted advice and product recommendations.
Clare has contributed to titles across the Hearst UK portfolio, including Women’s Health, Good Housekeeping, Red and Prima. Prior to joining Hearst, she earned a BA in Multimedia Journalism from Bournemouth University, focusing her studies on magazines and editorial. She later worked as an editorial assistant at Voir Fashion Magazine, covering events including Fashion Week and interviewing notable brand founders.
Outside of work? You can find Clare strolling through London’s Columbia Road Market, pouring her fourth coffee of the day or heading to a Pilates class.
Follow Clare on Instagram @clarefrancesstephenson.

Laura is a former writer for Cosmopolitan UK, covering everything beauty and fashion related and specialises in makeup, plus-size fashion and the world of YouTube. Her favourite pastime is reminding everyone of that one time she met Charlie Hunnam and Jason Momoa. Please don't ask to see the pictures...

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