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K18 molecular repair reverses hair damage in just 4 minutes.

backed by science, loved by stylists

Our community of stylists and colorists in 33 countries believe K18 is liberating hair—no matter the hair type or generation.

“Oh my gosh—my hair feels so awesome. I can’t stop putting my hands through it...I have had a terrible relationship up until recently with my hair, I have to admit. Growing up, I had frizzy hair, I have hair that curls but doesn’t curl well, and so it’s hard for me to like my hair. And I have to say, right now—I LOVE my hair.”

- Diane, K18 with color
“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
"What I've found with K18 whether I'm using the MIST or the MASK, is that I can get that hair to do exactly what I want, it has the strength and integrity that I'm looking for, and it looks AND feels amazing which to me is a gamechanger."
- Jon Reyman, Founder Spoke & Weal


Traveling deeper into the inner layers of hair than traditional repair products, our revolutionary peptide is just the right size and makeup to reconnect broken keratin chains


"I used it for a month and couldn't believe the results after ONE use—my hair not only looked healthier, it felt like SILK, no joke."
— Carly Cardellino, Beauty Editor
“K18 Hair is a gamechanger for the hair industry [...] it is the first time I have ever seen a product truly heal hair."
— Sally Hershberger, Salon Owner & Celebrity Stylist
"In my 30 years of using hair products I have never come across a product as amazing as K18."
— Jack Martin, Hair Colorist
"I love K18 Hair because it really allows me to push the limits with the bleaching process."
— Aura Friedman, Master Hair Colorist
"K18 is the future of hair repair."
— Jon Reyman, Hair Stylist, Salon Owner, and Educator

Healthy hair starts
in the salon

Experience the best of K18 in a salon before a chemical service. Then, continue your
active care at home — watch and feel your hair transform with every use.
salon treatment
Contact your stylist to try K18 at your next salon service
at-home treatment
Renew, strengthen and protect your hair at home
full-size leave-in molecular repair hair mask
Rated 4.6 out of 5
Based on 7555 reviews
4-minute leave-in treatment to reverse hair damage
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