An at-home leave-in treatment infused with our patented K18Peptide™ that works to repair even the most extreme damage, renewing hair to its most youthful, healthy state.
what you can expect by damage type
backed by science, loved by stylists
Our community of stylists and colorists believe K18 is liberating hair—no matter the hair type or generation.
“K18 allows me to go everywhere I want to go with my color work and the end result is my guests get to be bright and shiny and healthy.”
– Christine Thompson, Director of Color at Spoke & Weal
we have answers.
How does K18 work?
When hair gets damaged, the polypeptide chains (keratin chains) that make up the inner structure of hair strands become weakened and break. For context, there are billions and billions of polypeptide chains (keratin chains) in a single strand of hair. When these are damaged, hair’s core structure responsible for elasticity and strength becomes compromised and as a result it loses its resiliency and shine—or the look and feel of healthy hair.
After spending a decade in the lab scanning and testing all amino acid sequences across the entire keratin genome that makes up human hair searching for a breakthrough, we discovered one unique sequence (a bioactive peptide) that brings damaged hair back to its original, youthful state. This is our K18Peptide™.
Traveling deeper into the inner layers of hair than traditional repair products, our revolutionary peptide is just the right size and makeup to fit in and reconnect those broken polypeptide chains (keratin chains). And because our peptide is a bit of an overachiever, as a result of this reconnection, any disturbed disulfide bonds are also re-conformed.
Our peptideemploys biomimetics to get the job done. To put it simply: Biomimetics is the practice of learning from and mimicking nature. Mimicking the natural structure of keratin building blocks (amino acid sequences), our K18 bioactive peptide is recognized as natural by the hair. It’s not washed away by water or shampoo like traditional bonding agents either, making K18 a genuine, lasting solution for damaged strands.
What is the K18Peptide™?
Our patented peptide is a unique sequence of amino acids that travels deep into hair’s core structure to fit in and reconnect broken polypeptide chains (keratin chains) responsible for hair strength and elasticity.
An Analogy: When building proteins, the order of the amino acids determines the kind of protein and its properties, much like the way letters are arranged to make meaningful words and sentences. In the same way the order and where each word sits in a sentence leads to its overall meaning, K18 is the magic word that fits right in, integrating itself with the keratin chains as the hair recognizes it as a natural building block.
Why should I skip conditioner?
K18 is most effective on clean, towel-dried hair. Conditioners use silicones and conditioning agents that form heavy coatings on hair, preventing our peptide from reaching the broken polypeptide chains deep inside hair’s inner layer.
I noticed there’s alcohol in the formula, isn’t that bad for you?
We like to keep our formulas minimal, only using the exact amount of ingredients needed to get the peptide where it needs to go. Our unique blend of 3 alcohols function to open up the hair cuticle so the K18Peptide ™ can penetrate the inner most layer of hair, reaching the broken polypeptide chains (keratinchains). Here the alcohol serves as an agent to optimize the hair environment for K18 to work on a deeper level.
When should I expect to see results?
You will start to see stronger, softer, healthier hair after just one use.
with just one salon treatment hair is restored to
* Results observed in a clinical study while using mist and mask as part of a bleaching treatment. Results may vary depending on hair type, quality and history.
the more damaged the hair, the more dramatic the results
*Results observed in a clinical study. Results may vary depending on hair type, quality, and history.
renews strength, softness, smoothness, and bounce
K18 strengthens hair’s core structure, restoring damaged curl patterns and leaving strands looking and feeling like new.
K18 reconnects broken keratin chains, restoring hairs elasticity and strength meaning coily hair can be renewed and brought back to its original springy, healthy shape.
K18 restores strength, softness, smoothness, and bounce so even the sleekest hair can feel like new.
I’m in my 50’s and after years of coloring, bleaching etc my hair is in pretty bad shape. I’ve tried ALL the other “cures spent a ton of money with little to no results. After ordering just the sample tube I already see a difference and will now be getting the full size product!
Thank you for your review, Anthea! K18 is a progressive treatment and we recommend for you to use K18 for your first 6 consecutive hair washes for significant results and then every 3rd to 4th wash for maintenance. The results will vary by hair type and the amount of damage done to the hair. Consistency is key with K18. We ask for you to continue on and to be patient as your results will come! K18 works from within so let it work its magic to reverse all your years of damage. We want you to have the best possible experience with K18 so please reach out with any questions at firstname.lastname@example.org.
I have fine hair that shows damage easily...this product keeps my hair looking full and healthy. I find my hair responds best when I use it at night, air dry and then no additional products. In the morning my hair looks great!
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leave-in molecular repair hair mask
Rated 4.4 out of 5
381 ReviewsBased on 381 reviews
4-minute leave-in treatment to clinically reverse hair damage
Hair professionals can shop wholesale at the following distributors. Professionals within the US will also be able to shop directly from K18hair.com starting early 2021! Check back again soon for updates as we continue to expand globally.