K18 Biomimetic HairscienceLeave-in Molecular Repair Hair Mask - Treatment for Damaged Hair
Product Description
Highlights
A leave-in treatment mask for all hair types that clinically reverses damage in four minutes. The K18PEPTIDE™ works to repair damage from bleach, color, chemical services, and heat, restoring strength, softness, smoothness, and bounce to hair. This mask is powered by the patented K18Peptide, which is just the right size and molecular structure to reach the innermost layers of hair and re-connect broken keratin chains responsible for hair's strength and elasticity. Restores strength, softness, smoothness, and bounce Repairs damaged hair Easy leave-in formula delivers lasting results Clinical Results: In a clinical study on hair that was bleached 8 times, after 2 uses: -Biotech-powered K18PEPTIDE™ restored damaged hair by up to 82%
Directions
In the shower: -Shampoo, don‘t condition. Once out of the shower: -Using a towel gently dry hair until damp. -Begin with one mL/one dime-size amount of K18 Mask. -Only add more as needed. Average use is two mL/two dime-size amounts (this is a concentrated formula, so you‘ll need much less than traditional masks). -Work evenly into hair from ends to roots. -Let sit for four minutes to activate. -Don‘t rinse out. -Style as usual after the four minutes is up (fine to add heat protectant or styling product now). -Use for the first four to six washes, then swap to maintenance mode and use as needed.
Composition
K18PEPTIDE™ repairs damage from bleach, color, chemical services, and heat.This product is vegan, cruelty-free, and comes in recyclable packaging.
Fragrance Description: The light floral scent features notes of jasmine and peony.
More information
Clean at SephoraIngredients
Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78 (K18PEPTIDE), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
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Rated 5 out of
5
by
Sarah from
Wonder hair
Has completely transformed my hair. My hair was snapped and damaged and straw like and after 3 month of using it twice a week three pumps max my hair feels so much better I’m so much happier
Date published: 2026-10-17
Rated 5 out of
5
by
Amy from
Saviour
After years of bleaching this has completely saved my hair, I'll never be without it now
Date published: 2026-10-08
Rated 5 out of
5
by
Olena from
Nice
I've been using this mask for a month. I haven't noticed any results yet, but I definitely like its texture and the way my hair feels right after I apply it. It’s also a time-saver for me because you don’t need to rinse it out.
Date published: 2026-10-05
Rated 5 out of
5
by
Krystie from
Game changer
I have seen a massive difference in my hair smoothness strength and shine since adding this to my routine!
Date published: 2026-09-07
Rated 4 out of
5
by
Ilona from
Good but pricey
Great for repairing bleached hair but not amazing enough to warrant the price tag
Date published: 2026-08-31
Rated 5 out of
5
by
Mozma from
Strong and soft hair
Perfect for damaged hair. Hair feels so soft and strong after continuous use.
Date published: 2026-08-31
Rated 5 out of
5
by
Gal from
Honestly a lifesaver!
I bought the K18 Hair Mask for my mum because her hair was really damaged, and I was honestly amazed by the difference. Her hair feels so much healthier, softer and stronger, and it’s also much easier to manage.
We’ve tried so many different treatments, but this is one of the few products where we could actually see and feel a real difference. It genuinely helped bring her hair back to life. We’ll definitely repurchase!
Date published: 2026-08-10
Rated 5 out of
5
by
Frances from
Amazing
Love this product, don’t use anything else cos this is amazing!!!! If you want to keep your hair in great condition and less visits to hairdresser!! Use this! 100% recommend
Date published: 2026-07-30
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