leave-in molecular repair hair mask

Regular price €69,00
Tax included.


4-minute leave-in treatment to clinically reverse hair damage

An at-home leave-in treatment infused with our patented K18Peptide™ that works to repair even the most extreme damage, renewing hair to its most youthful, healthy state.


Bleach + ColorBleach + Color       HeatHeat 

Chemical ServicesChemical Services 

More to know

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.

how to use

 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.

Dosage Guide:

 do's + don'ts

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!

key benefits

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

Doesn’t wash away with shampoo, leaving lasting results

Vegan, color-safe, cruelty-free

91% original strength*

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.


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.

Customer Reviews

Based on 156 reviews Write a review

Customer Reviews

Based on 171 reviews
Barbara H.
Delighted with results

I spend my life (and too much money) on finding the perfect hair products to help my very fine hair cope with chemicals, sun and sea damage etc. I'm usually underwhelmed by results. Well, not now! I am so happy with how this has helped by post blonde balayage hair. It was feeling really crispy and bits were breaking off and that has improved so much with this hair mask, way softer, less frizz and breakage. Highly recommend,.well worth the investment!

Mariia Panasenko
It saves my hair

Thank you! It really working! My blond and damaged hair, looks and feels better. Photo before first treatment

Claire Jones

Love this product, have purchased once before onto my second bottle love this, leaves my hair very soft and shiny, definitely worth the money


Best mask I’ve tried so far. You need to give it time to see results. Definitely buy again. The price is a bit spicy, but a little goes a long way.

Sarahi Martinez

This is the best of the best for damage hair, it repaired my blonde damage hair, I absolutely love it 😍