K18 Leave-In Molecular Repair Hair Mask 0.5 oz

K18 Leave-In Molecular Repair Hair Mask 0.5 oz

Regular price $37.95 now $25 Unit price  per 

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Brand K18
Item Form Cream
Material Feature All
Hair Type Damaged
Product Benefits Renew strength, softness, smoothness, and bounce for hair like new in just 4 minutes.

A leave-in treatment mask for all hair types that clinically reverses damage in 4 minutes. The patented peptide technology works to repair damage from bleach, color, chemical services & heat – restoring strength, softness, smoothness, and bounce to hair.

creates hair like new
Traveling deeper into the inner layers of hair than traditional repair products, our revolutionary patented K18Peptide™ is just the right size and makeup to fit in and reconnect broken keratin chains, renewing hair with strength, softness, smoothness, and bounce. You can feel and see the difference with the first use.

See dosage chart for exact usage. For best results, use for the first 4-6 consecutive washes, then every 3-4 washes as needed to maintain hair strength.

IN the shower

  1. Shampoo, do not condition.

OUT of the shower

  1. Towel dry thoroughly.
  2. Begin with 1 pump of the K18 Mask and add more as needed depending on the length, thickness, and condition.
  3. Work evenly into hair from ends to roots, one pump at a time.
  4. Let sit for 4 minutes to activate.
  5. Do NOT rinse out.
  6. Style as usual

    • DO use a clarifying shampoo if you’re a heavy product or dry shampoo user to remove buildup and help our peptide penetrate and get where it needs to go.
    • DO wait the full 4 minutes before styling or applying other product
    • DO use every 4-6 shampoos consecutively to see and feel ongoing results
    • DON’T condition your hair before application (trust us, most won’t need it after K18, if you still need, add a leave-in after the 4-minute window is up post-application)
    • DON’T overuse, a little goes a long way.
    • DON’T rinse out. This is a leave-in, so you know, leave it in

      Our K18Peptide™ is clinically proven to reverse damage in just 4 minutes.


    • Heals damage from bleach, color, chemical services, and heat
    • Restores strength, softness, smoothness, and bounce

      Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20,sh-Oligopeptide-78 (K18Peptide™), Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.
    • Doesn’t wash away with shampoo, leaving lasting results
    • Vegan, color-safe, cruelty-free


    up to 91% original strength*
    up to 94% original elasticity*

    * 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.


K18Peptide™ is the patented molecular breakthrough clinically proven to reverse hair damage from: bleach + color, chemical services, and heat in just 4 minutes.


Renew strength, softness, smoothness, and bounce for hair like new in just 4 minutes.


IN the shower: Shampoo, rinse. Skip the conditioner. OUT of the shower: Towel dry hair thoroughly. Apply Mask. Wait 4 minutes. Do NOT rinse out.

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