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.
get inside the world of hair
Traveling into the inner-most layers of hair to reach the core polypeptide chains (keratin chains), our revolutionary K18PEPTIDE™ is just the right size and makeup to fit in and reconnect broken chains.


the K18PEPTIDE™ molecular repair treatment
leave-in molecular repair hair mask
This at-home leave-in treatment infused with our patented K18Peptide™ repairs even the most extreme damage. Just one application renews hair to its most youthful, healthy state.
This at-home leave-in treatment infused with our patented K18Peptide™ repairs even the most extreme damage. Just one application renews hair to its most youthful, healthy state.
Get inspired
show us how you K18@k18hair