K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask 15ml
You'll earn 34 Status Points with this product
33.90€
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
33.90€
Other Customers Bought
47
44.07€
11
73.45€
2620
25.90€
5
44.07€
90
54.20€
1556
36.16€
Customer Reviews
5 stars rating 383 reviews
4 stars rating 102 reviews
3 stars rating 61 reviews
2 stars rating 13 reviews
1 stars rating 20 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.
K18 better in molecular reconstruction!
I have worked in the beauty industry for 10 years, and at the moment this is the best product in hair restoration, if it did not work, then something was done wrong! It should be applied only after shampoo, instead of conditioner and kept for 5 minutes. I will always buy it, and I am happy that there are no 12 steps, only one product for the beauty and health of hair)
by kris_k9
Was this helpful?
So far so good!
I have high hopes and am in the long game in my hair recovery journey. I use three pumps on my long hair. It feels less frizzy and softer. I’m on my fourth use. I use it without a conditioner. It works!!
by Jasmine Verified Purchase
Was this helpful?
Game Changer
Truly repairs damaged hair, leaving it stronger, softer, and healthier. Lightweight, easy to use, and worth the hype. A must-have for damaged hair!
by Do Verified Purchase
Was this helpful?
Just ok
I always managed to use too much and if I use less doesnt work
by Micky Verified Purchase
Was this helpful?
k18
It restored my hair a lot. Suitable for color-treated hair. It is important to wash before with shampoo without conditioner or mask!
by noya Verified Purchase
Was this helpful?
Impressive Repair
I have wavy, natural hair that felt drier than usual after summer. I decided to try K18 and was amazed by the results from the first use. After 3–4 applications, alternating with conditioner, my hair completely transformed—stronger and healthier. However, styling without conditioner is still tricky, so for now, it’s either repair or perfect styling for me.
by sm Verified Purchase
Was this helpful?
So good
This is incredible! Whenever i use this mask, i see a noticeable difference: my hair feels so much softer and healthier. You don’t need to use it much or often so it also lasts a long time!
by Ula
Was this helpful?
Love it
I use it every wash, really makes a difference!
by Sofi Verified Purchase
Was this helpful?
A Game-Changer for Damaged Hair!
I’ve been using the K18 Leave-in Molecular Repair Hair Mask for about a month now, and I can confidently say it’s worth every penny. My hair has been through a lot—bleaching, heat styling, and environmental stress—but this product has completely transformed it. The texture is lightweight, almost like a serum, and it absorbs quickly without leaving any residue. I was skeptical about how such a small amount (pea-sized for medium-length hair) could make a difference, but it truly delivers. After just one use, my hair felt noticeably softer and looked shinier. With continued use, I’ve seen less breakage and a smoother texture overall.
by Hadil Verified Purchase
Was this helpful?
Magic
The K18 Biomimetic Hairscience Leave-in Molecular Repair Hair Mask is nothing short of a miracle for damaged hair! This mask works wonders by deeply repairing the hair's molecular structure, leaving your hair softer, smoother, and healthier after just one use. It’s lightweight, non-greasy, and easy to apply—just a few pumps and you’re good to go. What sets it apart is how quickly it works. Unlike other masks, you don’t have to rinse this one out, which makes it perfect for those on the go. The formula absorbs quickly and doesn’t weigh hair down, even for finer textures. Over time, it helps rebuild hair strength, improving elasticity and reducing frizz, which I’ve definitely noticed. While the price is on the higher side, it’s definitely worth the investment if you have damaged or over-processed hair. It’s one of the best products I’ve used to actually repair hair from the inside out.
by Aya Verified Purchase
Was this helpful?