K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml
You'll earn 34 Status Points with this product
33.90€
In stock | Usually dispatched within 24 hours
Where science meets hair care, K18 believe that to truly care for our tresses, we must understand the biology behind it. Swapping out the lab coat and test tubes for a salon chair and hair tools, this brand is here to help you transform your locks from the comfort of your bathroom! Packed with a plethora of beneficial ingredients, namely their uniquely patented K18Peptide™, their hero product is a game-changer - or should we say mane-changer - that promotes healthier-looking hair. Can't think of a way to restore your hair's elasticity and bounce? Cue: the Leave-In Molecular Repair Hair Mask...
Does your hair need some TLC and a little... shaping? To the salon! Treat your locks to this at-home, leave-in formula that's infused with their unique patented K18Peptide that works on molecular level to repair even the most extreme damage! Let's pop on our lab coats for a quick second and give you the science-y low-down on this Leave-In Molecular Repair Mask. The patented peptide boasts a unique sequence of amino acids through the struggling strands to reconnect. The result? Stronger, softer, smoother and bouncier hair that's full of life. Boasting salon-like results in just 4 minutes, this concentrated formula is brimming with moisture magnets and protectors to leave your hair feeling prepped, primed and voluminous. Did someone say luscious locks alert?
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78, Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
For the latest information, it is recommended to review the ingredient list printed on the packaging of the product prior to usage or consumption.
Shampoo and rinse. Do not use conditioner, towel dry hair thoroughly, apply Leave-In Molecular Repair Mask and wait 4 minutes. Do not rinse out. After 4 minutes, apply styling products if desired and dry/style as usual.
Frequently Bought Together

This item
K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml
33.90€
Customer Reviews
5 stars rating 414 reviews
4 stars rating 106 reviews
3 stars rating 63 reviews
2 stars rating 14 reviews
1 stars rating 21 reviews
Top Customer Reviews
Thanks for sharing your thoughts! Please remember that results will vary from person to person. We're proud to say that all customer reviews are independent, authentic and do not represent the views of Cult Beauty or The Hut Group.
Next-gen in Haircare
Welcome to your new cult obsession, the next-generation in haircare!This leave-in conditioner felt like it was working from the first time I used it. I have fine, dry, mature hair, recently ravaged by COVID and its growing through weakly at the moment. I need to strengthen that regrowth to ensure it ends up as long thicker hair in a few month's time so this really appealed to me. It's been proven to strengthen the hair core over time, I've been using it for a month so time will tell for that side. What I didn't expect from such a pumped up formula is it also leaves my somewhat depleted mop soft and brilliantly VOLUMISED. I only need a pump, for longer, curly or textured hair I'd say 2-3 max. It doesn't weight hair down. The first really new innovation I've seen in haircare since Virtue and Olaplex, dropping first, and exclusively to Cult Beauty (of course)!!
by Alexia Inge - co-founder Cult Beauty
Was this helpful?
Amazing product K18
It has really helped my damaged hair to get back healthy. Yes, it is expensive but totally worth it. Really recommend.
by Liga Verified Purchase
Was this helpful?
Best hair mask ever
Bought the 15 ml version and now I’m obsessed. A little goes a long way, and read the manual it is important!! The results are even better that way. I don’t colour my hair, but I did have very dull hair. My hair is wavy but somehow the curls didn’t come out anymore. When I used this I got my curls back! Holy grail. Bought the 150 ml version after that.
by Michelle Verified Purchase
Was this helpful?
5+++++++++
This is a product that more than delivers on its promise. It works better than Olaplex or any other hair treatment I have tried. If you haven't tried this you must.
by Rhonda Verified Purchase
Was this helpful?
Very good
This is an excellent product, worth its money.
by Elena Verified Purchase
Was this helpful?
Wish it was good
I had high hopes when reading reviews. Unfortunately the product did nothing for me. I used it according the instructions after every wash on towel dry hair and did not use conditioner. No improvement for my hair. I have better results by using leave in conditioner of kerastase that also protects for heat.
by Nienke Verified Purchase
Was this helpful?
Lovely
I really love this product,leaves the hair with a lot of volume and lasts longer clean
by olalla Verified Purchase
Was this helpful?
Didn't work for me
Now it's possible my hair is extremely damaged, but this didn't even make my hair soft and did absolutely nothing for me at all. Actually made my hair look worse after I used it :(
by Elena Verified Purchase
Was this helpful?
Amazing!
After just one application my hair feels renewed. It’s stronger, bouncier, healthier, smoother… everything! I definitely recommend this game-changer!
by Ksenia Verified Purchase
Was this helpful?
Hair Saviour - Actually Repairs Damage
K18 delivers on its promise. This product purports to cure damage from bleaching, heat and UV (more than what Olaplex claimed). This has transformed my hair. I have been highlighting my think & coarse, wavy auburn hair blonde since I was 12 (I am 24 now). This product has made my hair feel like virgin hair. The trick is not to use any conditioner when you are using this. This made me so sceptical as I have extremely thick and knotty hair. K18 manages to soften, detangle and make my hair shinier than it did with conditioner. Recommend to all my girls looking to salvage their hair between higlihting, In my 6 months using this my hairdresser has noticed an immense improvements in my hairs quality. Steep price tag up front, but so well worth it and a little goes a long way!
by Laura
Was this helpful?