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.
Silky soft hair
This really seems to make my haor softer and stronger. I also like the way I dont need to wash it out and apply after a shampoo so it decreases my hair washing time
by WC Verified Purchase
Was this helpful?
Fantastic
My daughters hair was very damaged from heat damage and colouring. She’s on the 3rd use of K18 and it’s making a huge difference.
by Gemma Verified Purchase
Was this helpful?
Staple
I swear by K18 for bleached blonde hair. I use every fortnight to help strengthen my hair.
by Sarah Verified Purchase
Was this helpful?
Game Changer
I love this mask - it restores my hair after colouring- improves its manageability and texture. All of which makes my hair easier and quicker to style. It’s not a cheap purchase but I find a little goes a long way but I find it is worth the investment.
by pebbles Verified Purchase
Was this helpful?
Not sure
Used once, not sure I see any difference at all. It might be that I need to use over a longer period. So no immediate results if this is what you are after
by Cherry boom Verified Purchase
Was this helpful?
Holy Grail
This is my holy grail hair repair treatment and although it’s expensive it’s worth it for me and it lasts well which makes it better value. I have damaged hair and I notice a definite improvement to the health of my hair from using this regularly.
by Victoria Verified Purchase
Was this helpful?
HG product
Everyone should have this in their stash. A staple for fresh healthy hair and my constant go to for healthy hair. A little does a long way
by Clare Verified Purchase
Was this helpful?
Worth it!
As someone who has vibrants in her hair, anything I can do to minimise rinsing is a win. This ticks all the boxes, I love how my hair feels after using it and the fact I need such a small amount blows my mind.
by Natalie Verified Purchase
Was this helpful?
Saved my hair
This product saved my bleached hair!! Best product for hair repair on the market. Worth the money
by Georgia Verified Purchase
Was this helpful?
Amazing
I've stoped using It because I thought I don't need it an OMG I as wrong! Blond, bleached hair saver!
by Monika Verified Purchase
Was this helpful?