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Could A Serum Help Future-Proof Your Hair Against Greys And Shedding? K18 Says Yes

Erin Cook
by Erin Cook
Updated:
03 Sep 2026
Erin Cook is a beauty and lifestyle journalist who has been slinging words for magazines, such as marie claire, ELLE, Harper’s BAZAAR, Cosmopolitan and Body+Soul, for the better part of a decade. As part of this role, she's had the pleasure of interviewing countless experts, such as dermatologists, trichologists, makeup artists and brand founders, to get their two cents on the latest beauty trends or to answer consumer questions. She loves a good hyaluronic serum, tinted moisturiser or glossy lipstick almost as much as she loves her cats. Almost.

I tried the new serum that promises to prevent future greys and hair shedding
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In Partnership With K18
The new K18 FutureIQ Biomimetic Hair Longevity Serum promises to tackle the visible signs of hair ageing (think: shedding and greying) before they even begin. Pretty impressive, right? I put it to the test and dig into the science behind its proprietary MultiVital™ technology to find out what makes it so powerful.

Top Insights From This Guide

  • A groundbreaking new scalp serum designed to help prevent premature greying and protect against hair shedding.
  • Apply four droppers of product directly to a dry or damp scalp, then gently massage in.
  • The lightweight, water-based formula absorbs quickly into the scalp without leaving hair feeling greasy or weighed down.
  • Consistent use is key – expect to see full results after three months of consistent use.

A lot of new products launch each year, especially in the hair category.
There are plenty of beautiful shampoos, conditioners, serums, oils and styling products out there that promise to keep your hair and scalp in tip top shape, so it takes something genuinely interesting to cut through the noise.
K18 is one of the few brands that always grabs my attention when it launches something new.
Most people know K18 for its cult-favourite Leave-In Molecular Repair Mask – a bond building treatment that reached viral status for its ability to restore chemically damaged hair to its full health.
K18 has always positioned itself at the more science-driven end of haircare, with products built around making meaningful changes to the health of your hair, rather than simply cosmetic results.
The brand’s newest launch – K18 FutureIQ Biomimetic Hair Longevity Serum – does not disappoint.
This time, rather than focusing on strengthening the hair you already have, K18 FutureIQ gets to work on what comes next: future hair growth.

What Is The K18 FutureIQ Biomimetic Hair Longevity Serum?

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Want to know more about K18 FutureIQ? You might want to slip your lab coat on for this one.
This unique formula takes a proactive approach to hair and scalp health, helping to address the signs of premature ageing that can show up as greying or shedding. Think of it as skincare for your hair. Powered by K18’s proprietary MultiVital™ technology (more on that in a moment), the serum works much like an anti-ageing serum for your skin, supporting healthier-looking hair now and into the future.
The formula is backed by a 12 week clinical study, where participants applied four droppers of the serum to their scalp every night.
While some results were noted after one month, it was at the 12 week mark where noticeable changes peaked. The results are impressive: 70% of those surveyed reported fewer greys, while 54% said their scalp felt revitalised. Even more notably, participants saw an average increase of up to 19,000 hairs, helping to boost overall volume and fullness.
Please note: this formula works best for those with less than 30% grey and minimal to moderate hair shedding.

The Key Ingredient: MultiVital™
The ingredient doing the heavy lifting? MultiVital™.
FYI: MultiVital™ is proprietary to K18 – which means that this ingredient is exclusive to the brand and something that they developed in house. You won’t find this in any non-K18 products.
MultiVital™ combines biomimetic peptides, a root-anchoring complex and advanced antioxidants. K18 has brought these actives together in a unique blend designed to work synergistically, helping to future-proof your hair and address signs of premature ageing right from the root.
Put simply, MultiVital™ helps to: 
  • Keep hair anchored at the root
  • Delay the ageing process that strips the colour from your hair, resulting in greys
  • Protect the hair follicles from oxidative stress, like UV exposure and pollution.

My K18 FutureIQ Biomimetic Hair Longevity Serum Review

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When I heard about the release of K18 FutureIQ Biomimetic Hair Longevity Serum, I was excited to try it for a few reasons. Firstly, because I’m always interested in whatever K18 is doing next. And secondly, because I’ve started noticing a few greys here and there. Plus, there’s the fact my hairline has never quite returned to its pre-baby fullness – there are still a few sparse patches around the front that just haven’t thickened back up.
K18 future iq how to use:
The instructions are pretty simple: apply four droppers to the scalp every night. For me, the hardest part of introducing any new product to my routine is actually remembering to use it. To keep myself on track, I tried to associate applying the serum with brushing my teeth before bed. I kept my bottle of K18 FutureIQ next to my toothpaste as a visual reminder. Having not missed a night (yes, I’m bragging) I think my strategy worked quite well.
I was worried that the product would make my hair greasy, but this water-based serum soaks in quickly and doesn’t leave any residue. I didn’t have to wash my hair any more frequently than usual – which, for me, is a definite win.
Final thoughts:
After using the serum for a few weeks, I started to see the beginnings of some changes to the thickness of my hair around the hairline – however, it’s around the two to three month mark that I should notice more visible differences.
For me, the product felt soothing to apply and didn’t contribute to any hair oiliness. I plan to keep on using it to give the MultiVital™ technology more time to do its thing and see how my results progress with continued use.

Want more advice, tips and top haircare recommendations? Read these next:

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