K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml
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£30.00
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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.
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Customer Reviews
5 stars rating 946 reviews
4 stars rating 246 reviews
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2 stars rating 25 reviews
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Top Customer Reviews
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Smoother hair after first application
I have fine coloured hair, after one application my hair looked smoother, I've used it for the past 4 washes as instructed and washed without using today and the smoothness still present. Tiny bottle but hopefully I won't need to apply again for a while. You don't use conditioner alongside this product but my hair didn't feel dry.
by KennyCat Verified Purchase
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Amazing results
This has single handily changed my hair. It’s made my breakage go down and made my hair feel strong and healthy
by Swara Verified Purchase
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It’s good stuff
Started using this instead of Olaplex. I like it’s quick and easier to use but miss a conditioner. Hope it says what it does!
by ClaireH Verified Purchase
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Amazing
This leaves my hair feeling soft and manageable.
by Dal Verified Purchase
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Love love love!
Amazing, hair feels amazing after 1 use and feels stronger.
by Kaitlin Verified Purchase
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game changer!
tried this after getting a k18 treatment as the hairdressers, I have definitely noticed a difference in the texture of my hair. It is less frizzy and feels silky smooth after a blowdry. Such a luxurious product but you only need to use it sparingly!
by soph Verified Purchase
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My dry hair loves it
I have long, medium/fine curly hair and it gets pretty dry, especially in winter. I also colour it regularly. This leaves it feeling soft and manageable without being too soft that it won’t hold curls. Also feels stronger and healthier with regular use. Deducted 1 star as very expensive.
by Annie Verified Purchase
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so good
absolute game changer for my hair, looking at the progress over the past 8 months it has really helped to strengthen my hair
by cara Verified Purchase
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Didn’t do much
This made my hair feel very heavy and greasy - didn’t notice anything good about it
by R Verified Purchase
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Best leave-in treatment I’ve tried in a while
One of my resolutions for 2025 was to figure out my hair. Has been for a few years now and at this point I write it down more as a joke than anything else because nothing - and I mean nothing - could tame my frizziness. Well…kinda elated that it’s just February and I’ve (freaking) finally figured it out and it’s all because of this product. I wasn’t super into it at first application. I have coarse, wavy and frizzy hair. They looked shinier and more tamable but they felt kind of “raspy” at the touch. Anyway, I powered through and followed the instructions and my hair has never looked better. It’s shinier, basically frizz-free (and I live in a very rainy city. Did not think this was possible. Ever) and holds a style for much longer. I’ve tried Olaplex No. 3 and masks from Oribe before but nothing gave me these results. Amazing!!
by Jennifer Verified Purchase
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