Can K18 HAIR Longevity Serum Really Reverse Greys?

K18 longevity IQ serum
While there are many repairing hair treatments on the market, anybody who has tried K18 knows that its formulas are in a league of their own. After conquering the needs of dry and damaged hair with the iconic leave-in K18 mask and colour-safe shampoo and conditioner, the innovative brand has turned its attention to another very common concern: signs of premature ageing on your hair, including greys.

Featuring ground-breaking haircare technology, the brand new K18 Future IQ Biomimetic Hair Longevity Serum works to reduce hair fall, improve density and volume, and perhaps most impressively, visibly transform the appearance of grey hairs in three months.

Hair ageing is accelerated by environmental stressors like pollution, stress, hormonal changes and lifestyle choices. Developed to intervene before they cause visible damage, K18's serum includes MultiVital™ technology which contains biomimetic peptides with amino acids like keratin, alongside a root-anchoring complex to hold your hair in place, by reducing protein breakdown. Advanced antioxidants also protect your follicles from oxidative stress and support melanin signalling processes, resulting in hair that reappears with your natural colour.

To many people, the promises that this product offers will feel truly life changing. But will the results deliver? We’ve asked Ella, who has experienced premature thinning and grey hairs in her twenties due to genetics and stress, to put the formula to the test for two months and report back. Be sure to check back in a month's time to see her results are the recommended 90 days!

Topline On K18’s Future IQ Biomimetic Hair Longevity Serum

• Lightweight, non-greasy, water-based scalp serum

• Apply daily to wet or dry hair

• Designed to help with premature signs of scalp and hair ageing

• Best suited to those experiencing the first signs of ageing with less than 30% of the hair grey

• Reduces hair fall and improves density

• Improves the appearance of grey hairs over three months

• Improves your scalp barrier

Ella at the start of her K18 hair serum journey
Ella’s hair before using K18's hair serum

Ella’s concerns: Naturally, I have dark hair but I have some noticeable grey hairs that I would really like to take care of. This is very premature as I'm in my early twenties and having dark hair makes it look so much more noticeable. Also, I recently had hair extensions installed as I wanted thicker hair, which can increase the amount your hair sheds!

How did the serum feel? I left my serum on my bed side table and applied it religiously every night before bed so that it could fully absorb while I slept. As an oily hair girly, I was so worried that it would make my scalp greasy because this could have been a major dealbreaker – Who has time to wash their hair in the morning? Luckily, it has a really watery texture which soaked into my skin instantly. The formula was also very kind to my extensions and didn’t make them slip.

Ella’s hair after one month of using K18's Future IQ Biomimetic Hair Longevity Serum

Ella at the end of her K18 hair serum journey
Ella’s hair after one month of using K18's hair serum every day

How did your hair look after 4 weeks? The first difference I noticed was the size of the grey patches shrunk slightly, particularly around the centre of my scalp which is where it’s most prominent. I was really shocked and encouraged to see the initial progress as I didn’t expect the serum to work so quickly.

How did your hair look after 2 months? Over time, more and more grey hairs have disappeared. Entire patches of grey hairs have reduced down to individual strands. I’ve noticed a real, genuine difference that I never expected a product as simple as a serum to be able to make. Friends and family who had no idea I've been using this product have been commenting on the transformation as my greys were so apparent. When I had my extensions re-fitted, I was also very impressed by the improved volume and thickness of my hair, which is reassuring as having them can be damaging to your natural hair.

Ella's progress after using K18's Future IQ Biomimetic Hair Longevity Serum

Ella's side by side progress
Ella’s hair side by side after two months of using K18's serum

Will you continue to use this product? I’ve been really impressed by how quickly I saw results from this product and I'm only two months into the suggested three months, so I'm really excited to see how far they will go. I genuinely feel like I can’t stop using this serum as I can’t stop seeing these results. This is the only product I have seen address this concern and to do it so well feels miraculous. I feel like premature greying is something that isn't spoken about enough, so I am so glad there is now something out there. I cannot live without this serum, so I'll be repurchasing as and when I need it.

Ella’s verdict on K18’s Future IQ Biomimetic Hair Longevity Serum

Ella’s grey hairs improved dramatically while the thickness of her hair also improved. Overall, the efficacy of this product blew her away, having only tried it for two months out of the recommended three.

THE PROS: The speed at which Ella saw progress was surprisingly fast, with noticeable results in a matter of weeks. The water-based formula didn’t make her scalp or hair greasy and played nicely with hair extensions.

THE CONS: Due to being the first product of its kind on the market, this serum is an investment. However, with such brilliant results, Ella feels it’s money well spent.

More about K18

K18 Hair provides science-backed hair solutions with a simplified 'less is more' approach. If you’re suffering from dryness and breakage, repair damage from bleach and heat with the bestselling K18 leave-in molecular repair hair mask. The best part is, it couldn’t be easier to use. You simply shampoo your hair and apply post-shower, then style as usual with your k18 oil. If you’re at your wits end and just want healthy hair with softness, shine and bounce then this hair mask will be your new best friend.

Read More


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