K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml
You'll earn 30 Status Points with this product
£30.00
Or 4 interest free payments of £7.50 with
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
£30.00
Customer Reviews
5 stars rating 941 reviews
4 stars rating 246 reviews
3 stars rating 84 reviews
2 stars rating 25 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.
Makes a difference
I honestly feel this makes a difference to my hair. My hair looks healthier since I’ve been using this.
by Shalini
Was this helpful?
Fantastic
K18 has definitely helped my colour damaged dry hair fantastic product. My hair just feels so healthy.
by samantha Verified Purchase
Was this helpful?
Amazing
Took me a while to warm to this product. I tried the sample size in the early days of its release and going without conditioner then using it just did nothing for my hair. It felt awful, dry and tangled. However, decided to give it another go and not sure if the formula has changed but hair instantly detangles when applying only a tiny bit. You can really tell the difference when studying the ends. Split ends are gone and when brushing, no snapped ends come off. It really is a hair saver. I use it 6 times in a row after every time I have my hair coloured then every 3-4 washes after that. It really is incredible
by Catherine Verified Purchase
Was this helpful?
Great product
I love this product but I do think it’s slightly expensive for what you get, I originally received in the advent calendar and loved it it works but a tad on the pricey side
by Kerry Verified Purchase
Was this helpful?
Not what I was hoping for
Maybe I’m doing it wrong, but this didn’t give me the results I wanted. I’ve tried it a few times with a few weeks break in between and I didn’t see what the fuss was about. Very expensive for what it is and I don’t think I’d buy again. Maybe I need to try it again? Not sure
by Eleanor Verified Purchase
Was this helpful?
Really nice!
I really think this works to make hair stronger and more manageable, I need to use more than the three pumps however due to the thickness and length of my hair, and end up using the bottle quite quickly. Make sure to follow the directions and not use conditioner beforehand!
by Jessie Verified Purchase
Was this helpful?
Changed my hair game
I got Covid a few years ago and my hair went from thick and curly to really thin and falling out, so I tried so many different products to grow my hair again but this is by far one of the best
by Amberleigh Verified Purchase
Was this helpful?
Holiday
Bought for holiday to help with bleached hair the best thing I’ve ever used
by lauren Verified Purchase
Was this helpful?
Now this is amazing!
This must be magic in a bottle, the way one use can repair your hair is crazy! This is my second bottle now it’s abit pricey but it’s worth it
by Zeenat Verified Purchase
Was this helpful?
Mixed results
Whilst I enjoyed the ease of use of this product, the end results were mixed. In my long colour processed hair, I honestly didn’t see much of a difference but in my daughter’s 3c curls, it left her hair soft, hydrated with frizz free curls.
by Clare Verified Purchase
Was this helpful?