Free Standard Shipping on $125+ Orders
slide 1 of 12
mini size leave-in molecular repair hair mask 15mL
4.9
Rated 4.9 out of 5 stars
1,885 Reviews
Click to scroll to reviews

mini leave-in molecular repair hair mask

Mini retail size of our 4-minute leave-in treatment to reverse hair damage

Professional Only

Log In / REGISTER

Description

A retail-sized version of the K18 mask helps to maintain your client's hair strength and elasticity in-between salon appointments. This leave-in treatment mask for all hair types that reverses damage in 4 minutes. Patented peptide technology works to repair damage from bleach + color, chemical services, and heat* — restoring strength, softness, smoothness, and bounce to hair.

20+ billion TikTok views 🔥

*Disclaimers

Repairs Damage Caused By

  • Bleach + Color
  • Heat
  • Chemical Services
  1. Shampoo, do not condition. Towel-dry thoroughly
  2. Apply 3-9 pumps of K18 leave-in molecular repair hair mask based on your length and density, starting at the ends and working up towards the roots
  3. Let sit for 4 minutes. Do not rinse out
  4. Comb, add product + style as usual. Use for 4-6 washes post-salon service, then as needed

Takes damage repair further – biomimetic peptide seamlessly fits in and reconnects broken polypeptide chains at the molecular level. As a result, disulfide bonds are also reconnected for reinforced strength along the length + width of hair—offering comprehensive, lasting repair

Restores hair from even extreme damage - by working at the innermost layer of the hair, core strength and elasticity are renewed for strong, smooth, bouncy hair

Delivers immediate and lasting results – hair is repaired from the first use and lasts past your next wash, for ongoing reparative benefits

Simplified repair - convenient, leave-in formula works in just 4 minutes, with no extra rinse required

Works on all hair types – because K18PEPTIDE™ works on a molecular level (where all hair is the same), this product is effective on all hair types and with every service

  • K18PEPTIDE™ is a biotech-developed peptide that mimics hair's structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during bleaching, color and chemical services, and heat*.

  • pH-optimized (5.0-6.0) to help minimize cuticle swelling + put hair proteins in their most resilient state after salon service or shampoo

  • Cream format enables easy, lightweight application across all hair types, with detangling and softening benefits.

  • Vegan, color-safe, cruelty-free

  • DO clarify before K18 if your client is a heavy product user (demineralize for mineral + metal buildup)
  • DO apply on clean, damp hair
  • DO wait the full 4 minutes before combing or styling
  • DO add whatever styling products you love after the 4 minutes
  • DON'T use conditioner before applying K18 mask (you can apply after the 4 min but most find they don’t need it)
  • DON'T overdo it—less is more
  • DON'T rinse it out

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.

pairs well with
molecular repair hair oil
4.8
Rated 4.8 out of 5 stars
399 Reviews
Click to scroll to reviews
Weightless oil that strengthens, repairs damage + reduces frizz Log In / REGISTER
PEPTIDE PREP™ detox shampoo
4.8
Rated 4.8 out of 5 stars
247 Reviews
Click to scroll to reviews
Retail size of our color-safe, non-stripping clarifying shampoo formulated with the K18PEPTIDE™ Log In / REGISTER

Description

A retail-sized version of the K18 mask helps to maintain your client's hair strength and elasticity in-between salon appointments. This leave-in treatment mask for all hair types that reverses damage in 4 minutes. Patented peptide technology works to repair damage from bleach + color, chemical services, and heat* — restoring strength, softness, smoothness, and bounce to hair.

20+ billion TikTok views 🔥

*Disclaimers

got questions?
Get started here
K18 is engineered to work with every hair type, in every service, and with every routine.
Traditional conditioners leave a film on hair that blocks our peptide from penetrating effectively. Once the 4-minute wait time is up, feel free to use a conditioner, a leave-in, or any type of styling product.
Water in damp hair swells the cuticle (the outside layer of hair) to open the gates for our biomimetic peptide to enter and travel to the innermost layers of hair. If the gates aren’t open, the product will stay on the surface—giving you mostly superficial repair. By applying on damp hair, you can use less, waste less, and still get the best results.
Think of the K18 mask as a highly concentrated treatment. It restores hair’s strength + elasticity in the innermost layers of hair, instead of traditional conditioners that coat the outside of hair. After the 4-minute wait time post-K18 mask, feel free to add a leave-in for a boost of conditioning if needed.
Yes, both formulas are the same. The PRO mask is conveniently sized for PRO use.

healthier hair with every use

Reverse damage in 4 minutes with our breakthrough K18 molecular repair technology.
shopping with us has its perks

exclusive tools

Get access to monthly live training, professional education, and business guides.

free shipping on $125+ orders

Shop K18 at professional wholesale pricing (no order minimums here).

real support

We have K18 experts on standby to answer allll your product and order questions.

how molecular repair compares
how K18 works

Traveling into the innermost layers of hair, our K18PEPTIDE™ renews strength along the width AND length of hair for lasting strength where it matters.

feel what's possible with K18
See how K18 unlocks our community's expression
4.9
Rated 4.9 out of 5 stars
Based on 1,885 reviews
1,885 reviews
  • Pamela P.
    Verified Buyer
    I recommend this product
    Age 35 - 44
    Hair Concern Chemical damage, Heat damage, Fragile/brittle hair, Color-care, Split-Ends
    Hair Type Medium Density
    My Results Less Breakage, Stronger Hair, Visible Difference, Cleaner, fresher hair, Smoother Hair
    Rated 5 out of 5 stars
    2 days ago
    Really works

    There’s so many products that say that will help with chemical damaged hair, my hair is blonde and to be blonde it can really damage your hair. I noticed that my hear is getting healthy less breakage softer. Don’t forget to use a heat protector after.

  • Mariah H.
    Verified Buyer
    I recommend this product
    Age 18 - 24
    Client Hair Concerns Chemical Damage, Dryness, Frizz
    Client Hair Types Medium Density
    Client Results Less Breakage, Defined Curl/Wave Pattern, Soft Touchable Hair, Stronger hair, Bouncy Hair
    Rated 4 out of 5 stars
    4 days ago
    Definitely helps!

    My hair was chemically damaged and a large piece broke off. I’ve used this twice since then (so far) and it’s helped me not lose a lot more hair, and I’ve noticed less tangles. My hair has been so much softer and my curls are happier too. I’m definitely going to keep using this product. I only gave 4 stars because I do still have more breakage happening and I had to cut off quite a bit

    K18Hair PRO
    4 days ago

    K18 is a progressive treatment. It will get better with each application!

  • Jennifer M.
    Verified Buyer
    I recommend this product
    Age 45 - 54
    Hair Concern Chemical damage, Frizz, Fragile/brittle hair, Dryness
    Hair Type Thick/Coarse, Grey Hair, Curly/Coily
    My Results Less Frizz, Visible Difference, Less Breakage, Stronger Hair, Defined Curl/Wave Pattern
    Rated 5 out of 5 stars
    4 days ago
    LOVE THIS

    I can’t truly express how much I absolutely love this product!! My hair can actually air dry after using it and it’s not frizzy!! I no longer need all sorts of products to make it not frizzy! One and done!!!

    K18Hair PRO
    4 days ago

    Thank you Jennifer! We love your review!

  • Krystal P.
    Verified Buyer
    Age 35 - 44
    Hair Concern Chemical damage, Heat damage, Frizz, Fragile/brittle hair, Split-Ends
    Hair Type Straight/Wavy, Fine/Thin
    My Results Less Frizz, Visible Difference, Smoother Hair
    Rated 3 out of 5 stars
    3 weeks ago
    Does it do what it claims? Meh…

    So I have used this product for 6 washes, exactly as directed. My hair had been damaged by bleach. The improvement I saw was temporary. The first two uses, it really helped smooth my ends. However, that was temporary and I now am back to square one. I wish it had lived up to the hype. Great leave in, but it’s not correcting any damage and it’s not as effective as it was at first.

    K18Hair PRO
    2 weeks ago

    Depending on how damaged your hair is you may need to repeat the 6 consecutive washes. If you would love a personalized recommendation we can better assist you via email at Hello@K18Hair.com.

  • Briana Q.
    Verified Buyer
    I recommend this product
    Age 25 - 34
    Hair Concern Chemical damage, Fragile/brittle hair, Heat damage
    Hair Type Fine/Thin
    My Results Visible Difference, Stronger Hair, Less Breakage, Smoother Hair, Soft Touchable Hair
    Rated 5 out of 5 stars
    3 weeks ago
    Beyond Amazing

    I have had such damaged hair due to bleaching my hair for years and the stylist not making hair health a priority first, and I have since let my hair grow out its natural color however due to the damage my ends have not been healthy in years and continue to break. I have tried EVERYTHING for the last two years and have been disappointed over and over again UNTIL this product, I cannot even begin to describe the growth and health this product has been able to give me in just 1 1/2 months already. This product used with the other products of this brand has truly gave me my confidence back and I cannot wait to try more products from this brand. I am finally seeing amazing results. 10/10 recommend

    K18Hair PRO
    2 weeks ago

    We love this for you! Healthy grow out! Thank you Briana!

Pro Distribution Partners

Hair professionals can shop wholesale at the following distributors. Professionals within the US will also be able to shop directly from K18hair.com starting early 2021! Check back again soon for updates as we continue to expand globally.



Questions? Email us at hello@k18hair.com

Paramount Beauty Supply
USA
Salon Services Pro
USA
Salon Service Group
USA
Salonwax Pro
USA
Premier Beauty Supply
USA
Launching Soon
Ozdare - Australia
AU
 
Launching Soon
American Crew Ltd. - New Zealand
NZ
 
Launching Soon
PlayGround - Hong Kong
HK
 
Launching Soon
Session Map - Sweden
SE
 
Launching Soon
Cyprus
CY
 
Launching Soon
Belgium
BE
 
Coming Early 2021
Canada
CA
 
Coming Early 2021
Czech Republic
CZ
 
Coming Early 2021
Finland
FI
 
Coming Early 2021
France
FR
 
Coming Early 2021
Germany
DE
 
Coming Early 2021
Ireland
IR
 
Coming Early 2021
Italy
IT
 
Coming Early 2021
Netherlands
NL
 
Coming Early 2021
Norway
NO
 
Coming Early 2021
Singapore
SG
 
Coming Early 2021
Taiwan
TW
 
Coming Early 2021
UK
UK
 
Coming Early 2021
thank you for visiting!

You are now being redirected to an official partner website for this region where you can shop K18 Hair.

Changed your mind? Go back.

00:00
Blackfire Tracking
subscribe + save 15%
healthy hair on your schedule
Pick your K18 + how often you want to replen.
We’ll send you a heads up before every delivery.
You’re in charge. Change the way you pay, skip a shipment, or cancel anytime.
Protected by hCaptcha
Protected by hCaptcha

X