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Molecular Repair

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6 products
Leave-in molecular repair hair mask 50mL
4.7
Rated 4.7 out of 5 stars
9,524 Reviews
bestseller
Meta full-size leave-in molecular repair hair mask
K18 hair mask bottle with floral and nature-themed design on a purple background K18 hair mask bottle on a purple background
4.9
Rated 4.9 out of 5 stars
116 Reviews
limited edition
K18 x Future Society leave-in molecular hair mask
one use of molecular repair hair oil delivers: clinically proven damage repair, 24-hr frizz control, 104% more shine, 78% reduction in split ends, and 450F heat protection molecular repair hair oil
4.8
Rated 4.8 out of 5 stars
1,061 Reviews
K18 molecular repair hair oil
Leave-in molecular repair hair mask 15mL
4.7
Rated 4.7 out of 5 stars
9,524 Reviews
tsa-approved
Meta mini leave-in molecular repair hair mask
one use of molecular repair hair oil delivers: clinically proven damage repair, 24-hr frizz control, 104% more shine, 78% reduction in split ends, and 450F heat protection molecular repair hair oil
4.8
Rated 4.8 out of 5 stars
1,061 Reviews
tsa-approved
Meta mini molecular repair hair oil
Mini, Full, and Jumbo size leave in molecular repair masks lined up next to each other on a pink background. Jumbo leave in molecular repair hair mask
4.7
Rated 4.7 out of 5 stars
9,524 Reviews
bestseller
Meta jumbo leave-in molecular repair hair mask
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Explore the Collection

K18 haircare uses biotech + biomimetics to unlock new and lasting solutions to solve hair concerns with patented tech, problems that traditional cosmetic chemistry has only covered up. Using biotech, we recreate in the lab exactly what all hair types need to stay soft, strong, and bouncy—nothing more, nothing less—for optimal effectiveness in fewer steps, with fewer ingredients, and in less time. With the right technology, everyone can have their healthiest hair.

K18 makes the impossible possible.
    • What is biomimetics?

      Biomimetics is a fancy way of saying “learning from and mimicking nature.” By mimicking the natural structure and molecular makeup of keratin proteins, the K18PEPTIDE™ is the perfect puzzle piece to connect broken keratin chains to renew strength + elasticity.

    • What is the K18PEPTIDE™?

      K18PEPTIDE™ is a biotech-developed peptide that mimics hair’s structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during damage from bleach + color, chemical services, and heat* *www.k18hair.com/pages/disclaimers

    • Is the K18PEPTIDE™ in every K18 product?

      K18 molecular repair, PEPTIDE PREP™ detox shampoo, and DAMAGE SHIELD shampoo + conditioner are formulated with the K18PEPTIDE™. In our molecular repair products, the peptide works at the innermost layers to reverse hair damage. In our PEPTIDE PREP™ detox shampoo, and DAMAGE SHIELD shampoo + conditioner, the peptide helps reduce protein loss to help keep hair feeling healthy and strong.

    • what is k18 free of?

      Parabens, Sulfates, Silicones, Phthalates, Sodium Chloride, Artificial colors, Formaldehyde and formaldehyde donors.

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