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14 products
Leave-in molecular repair hair mask 50mL
4.7
Rated 4.7 out of 5 stars
9,497 Reviews
bestseller
Meta full-size leave-in molecular repair hair mask
Astrolift™ reparative volume spray White and light blue bottle of Astrolift reparative volume spray on a blue background.
4.7
Rated 4.7 out of 5 stars
491 Reviews
Meta AstroLift™ reparative volume spray
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
1,056 Reviews
K18 molecular repair hair oil
Leave-in molecular repair hair mask 15mL
4.7
Rated 4.7 out of 5 stars
9,497 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
1,056 Reviews
tsa-approved
Meta mini molecular repair hair oil
K18 AirWash dry shampoo bottle with features listed on a purple background
4.7
Rated 4.7 out of 5 stars
696 Reviews
bestseller
AirWash™ dry shampoo
DAMAGE SHIELD protective conditioner
4.8
Rated 4.8 out of 5 stars
704 Reviews
Meta DAMAGE SHIELD protective conditioner
A bottle of DAMAGE SHIELD protective shampoo by K18, with a white and blue label, indicating the size of 8.5 fl oz.
4.8
Rated 4.8 out of 5 stars
552 Reviews
DAMAGE SHIELD pH protective shampoo
4.8
Rated 4.8 out of 5 stars
704 Reviews
tsa-approved
mini DAMAGE SHIELD protective conditioner
4.8
Rated 4.8 out of 5 stars
552 Reviews
tsa-approved
mini DAMAGE SHIELD pH protective shampoo
infographic detailing the benefits of k18 detox shampoo. A bottle of K18 PEPTIDE PREP detox shampoo against a teal background.
4.9
Rated 4.9 out of 5 stars
687 Reviews
tsa-approved
mini PEPTIDE PREP™ detox shampoo
Clarify. for less frequent heavy duty washing. just one wash removes 99% of product buildup*, 95% of sebum*, and 76% of copper*. Formulated with K18PEPTIDE™. PEPTIDE PREP™ detox shampoo 8.5 oz
4.9
Rated 4.9 out of 5 stars
687 Reviews
PEPTIDE PREP™ detox shampoo
K18 hair care product bottles in various sizes on a blue background K18 shampoo bottle on a blue background
4.8
Rated 4.8 out of 5 stars
552 Reviews
new
Jumbo DAMAGE SHIELD pH protective shampoo
K18 hair care product lineup with mini, full, and jumbo sizes on a blue background K18 conditioner bottle on a blue background
4.8
Rated 4.8 out of 5 stars
704 Reviews
new
Jumbo DAMAGE SHIELD protective conditioner
You’ve viewed 14 of 14 products
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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