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 944 reviews
4 stars rating 246 reviews
3 stars rating 85 reviews
2 stars rating 25 reviews
1 stars rating 22 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.
excellent
Second time buying this. First I wasn't sure if it was doing much, but as I kept using it I felt like it was a nice easy way to look after my hair (low-maintenance is key for me!) So I'm going to be keeping this in my routine from now on. A little goes a long way so I feel it's good value too!
by lp Verified Purchase
Was this helpful?
Must have
If you have damaged dyed hair this is a must it’s helped my hair so much can see a huge difference from before been using for a while now and will be buying another one once my current one is finished
by Amelia Verified Purchase
Was this helpful?
Big difference
Expensive but worth it, my hair feels thicker and healthier after just a few uses
by Hannah Verified Purchase
Was this helpful?
Game changer
That is exactly what it’s promoted like. It actually repairs your hair.
by Stacy Verified Purchase
Was this helpful?
Noticeable after one use
Tried this again after stepping away to other products, and my bleached hair felt much softer and less tangled after one use
by Katie Verified Purchase
Was this helpful?
Doesn’t weigh my fine hair down
I have just started bleaching my virgin hair (balayage), so thought it would be a good idea to use a bond repairing treatment. As I have started using this at the same time as bleaching my hair, it is hard to see if it has improved the health of my hair as my hair feels drier from the bleach, so it’s hard to tell. However I do love applying this! I like how you can skip conditioner and then apply this, wait 4 minutes and then brush through and style. It’s saving me time in the shower not having to wait for my conditioner to sink in, and also doesn’t weigh my fine/thin hair down, or make it greasy, which a lot of products do. It is of course very expensive! Which is a big negative. So far I’ve only bought the 15ml. Will continue using for now.
by Beth Verified Purchase
Was this helpful?
Impressed so far!
Only used twice & already my hair feels much smoother & silkier. Excited to see results after more uses!
by Jules Verified Purchase
Was this helpful?
saved my hair
having gotten highlights for years, and having naturally curly hair that is already dry, i was worried my hair was permanently ruined. k18 has brought it back to life, from the first wash making it softer and somehow feeling thicker!
by floz Verified Purchase
Was this helpful?
Amazing
will never stop using, absolutely amazing, saved my hair using in Asia during the harsh environment
by Moniok Verified Purchase
Was this helpful?
STAPLE PRODUCT
Couldn’t be without K18 as part of my haircare routine. Definitely worth the price tag as results are excellent.
by L Verified Purchase
Was this helpful?