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K18 Leave-in Molecular Repair Hair Mask (Various Sizes)

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 that penetrate through the struggling strands to reconnect and repair those broken chains. 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?

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.

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.

Brand:
K18

Frequently Bought Together

K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
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K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
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K18 Leave-in Molecular Repair Hair Mask (Various Sizes) + Davines Replumping Hair Filler Superactive 100ml

from £31.40

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K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
This item
K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
from £9.00
Select size
Add both to basket

K18 Leave-in Molecular Repair Hair Mask (Various Sizes)

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You won’t find this beauty anywhere else — it’s *exclusive* to Cult Beauty.
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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 that penetrate through the struggling strands to reconnect and repair those broken chains. 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?

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.

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.

Brand:
K18

Frequently Bought Together

K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
This item
K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
from £9.00
Select size
K18 Leave-in Molecular Repair Hair Mask (Various Sizes) + Davines Replumping Hair Filler Superactive 100ml

from £31.40

Add both to basket
K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
This item
K18 Leave-in Molecular Repair Hair Mask (Various Sizes)
from £9.00
Select size
Add both to basket

Customer Reviews

Overall Rating : 4.31 / 5 (72 Reviews)
  • 55 5 star reviews
  • 4 4 star reviews
  • 3 3 star reviews
  • 0 2 star reviews
  • 10 1 star reviews
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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.

Not that good

Did nothing for my hair olaplex is better

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Must have!!

I love this product, it definitely keeps my naturally wavy and fly away hair calmer. I use this in between Brazilian blow dry treatments, as my hair looks healthier for it and is much more manageable 

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Not Bad

I've used this 3 different ways now and I'm just not sure if I've just not used it the right way enough or if its just not working for me. Either way I have finished the bottle and my fine hair just didn't get the real pick me up I thought it would with this product.

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Terrible for my hair

I'm not sure why as obviously works for some people but made my hair so frizzy and dry. Used for 4 washes but then stopped. My results with Olaplex is much better

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Big disappointment

I had such high hopes but this did absolutely nothing for me. I have long blonde, highlighted hair that’s pretty much straight. My biggest concern is breakage and frazzled ends. This left my hair feeling SO dry, despite applying a generous amount given the length of my hair and damage. Olaplex works miles better for me and is a lot less expensive.

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Not what I expected

Did nothing to impress me, Hair was lank, lifeless, and felt very course. 

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I like it

I used it once and i love the results. review is based on my first use , i still have to see how will be in the future after a few uses( if is something temporary or not) However after the first use i am very happy amazing product! Love it

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Phenomanal

I have a full head of bleach and have had for over 15 years. Yeah it’s high maintenance and at the min my hair is tired  dry and dull. After doing much research I came across this little beauty and I have to say I have used it once and Oh My Word! This is amazing my hair felt lies brittle and tangly and absolutely amazing. It blow dried really nice and smooth.  Mentioned to to my hairdresser and she said it’s amazing isn’t it better than olaplex… now that is a big statement but I have to say I agree.  I’m going to use this twice a week as my hairdresser suggests.  But I would highly recommend this product  to anyone especially with a full head of bleached hair.  Expensive ..yes but I would say it’s worth every penny! 

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Game changer

This - used with the spray mist as a salon treatment, has been a game changer for me. For some years I have experienced significant hair loss - illness & menopause related. After a single application of K18 I noted immediate reduction in hair loss which, after continued use of K18, has decreased to almost nothing /negligible. My hair feels stronger, thicker and styles better when using the products.

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An expensive mistake

This is a review based on 6 washes following the instructions.  After so much research I finally caved in and invested in k18. I followed the instructions very carefully and even contacted their customer service as to which shampoo I should use. All it’s done is cause so much breakage to my hair, messed up my hair colour and created massive frizz, I’m going to have to get a keratin treatment to fix the damage. 

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