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professional molecular repair mask

Second step of K18REPAIR™ service reverses damage post-service
Rated 4.8 out of 5
Based on 1575 reviews

Made to be used as part of the K18REPAIR™ service (K18 PRO mist + K18 PRO mask)

This leave-in treatment mask repairs hair damage and restores hair to a healthy state after salon services. Powered by the K18PEPTIDE™ to reconnect broken polypeptide chains and disulfide bonds to renew strength and elasticity in just 4 minutes. This mask is clinically proven to repair damage from bleach* + color*, chemical services*, and heat* for immediate + lasting results. Cream-based format helps soften, smooth, and condition hair.

*Disclaimers

Repairs Damage Caused By

  • Bleach + Color
  • Heat
  • Chemical Services

Professional Only

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more to know

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 before and after color and chemical services 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

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

Clinically proven to reverse hair damage – from: bleach* + color*, chemical services*, and heat*

*Disclaimers

key benefits

  • K18PEPTIDE™ is a biotech-developed peptide that mimics hair's structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during bleach, 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

*Disclaimers

how to use

The K18 professional molecular repair hair mask is meant to be used as the second part of the K18REPAIR™ service.

With a color or chemical service:

  1. Before the service, apply K18 professional molecular repair hair mist. Wait 4 minutes. Do not rinse out.
  2. Apply 1-3 pumps of K18 professional molecular repair hair mask based on your client’s length and density, starting at the ends and working up towards the roots. Let sit for 4 minutes. Do not rinse out.
  3. Proceed with cut or style as usual.
  4. If toning, use K18 PRO mist first, wait 4 minutes, then apply toner directly over PRO mist. Process as usual. Rinse or shampoo toner + apply K18 PRO mask per instructions above.

Without a chemical service:

  1. Shampoo, do not condition. Towel-dry thoroughly
  2. Apply 1-3 pumps of K18 professional molecular repair hair mask based on your client’s length and density, starting at the ends and working up towards the roots.
  3. Let sit for 4 minutes. Do not rinse out.
  4. Proceed with cut or style as usual.

dos and don'ts

  • DO clarify before K18 if your client is a heavy product user (demineralize for mineral + metal buildup)
  • DO apply on clean, damp hair (think about 65% wet)
  • 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

ingredients

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

professional molecular repair mist 300mL

Rated 5.0 out of 5
Based on 164 reviews
First step of K18REPAIR™ service restores up to 99% elasticity pre-service View Professional Molecular Repair Mist 300 mL (WHOLESALE) product Log In / REGISTER

PEPTIDE PREP™ pro chelating hair complex

Rated 4.9 out of 5
Based on 17 reviews
No-mix, spray-on demineralizing treatment View PEPTIDE PREP™ PRO chelating hair complex product Log In / REGISTER

Description

Made to be used as part of the K18REPAIR™ service (K18 PRO mist + K18 PRO mask)

This leave-in treatment mask repairs hair damage and restores hair to a healthy state after salon services. Powered by the K18PEPTIDE™ to reconnect broken polypeptide chains and disulfide bonds to renew strength and elasticity in just 4 minutes. This mask is clinically proven to repair damage from bleach* + color*, chemical services*, and heat* for immediate + lasting results. Cream-based format helps soften, smooth, and condition hair.

*Disclaimers

got questions?

Get started here

who is it for?

K18 is engineered to work with every hair type, in every service, and with every routine.

why skip conditioner?

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.

why do I use K18 mask on towel-dried hair?

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.

does K18 mask replace conditioner?

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.

Is the K18 pro mask and take-home mask the same?

Yes, both formulas are the same. The PRO mask is conveniently sized for PRO use.
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healthier hair with every use
Reverse damage in 4 minutes with our breakthrough K18 molecular repair technology.
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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.

reviews

average rating 4.8 out of 5
Based on 1575 reviews
  • 5 Stars
    1430 Reviews
  • 4 Stars
    83 Reviews
  • 3 Stars
    35 Reviews
  • 2 Stars
    8 Reviews
  • 1 Star
    19 Reviews
96% of reviewers would recommend this product to a friend
Customer photos and videos
1575 Reviews
Reviewed by RDW
Verified Reviewer
Age
55 - 64
Hair Concern
  • Fragile/brittle hair
  • Dryness
  • Extending time between washes
Hair Type
  • Medium Density
  • Straight/Wavy
  • Curly/Coily
Rated 3 out of 5
Review posted

Not enough in the bottle to cover recommended use

So I have mix 3a to 4c hair medium length. This $29 15ml barely covers 1 application of this product.

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K18Hair PRO

Would love to assist you with troubleshooting as our 15 mL mask should be good for 5-10 treatments. Reach out to us at Hello@K18Hair.com

Reviewed by Miranda W.
Verified Buyer
I recommend this product
Age
35 - 44
Hair Concern
  • Oily hair/scalp
  • Color-care
  • Frizz
Hair Type
  • Fine/Thin
My Results
  • Visible Difference
  • Soft Touchable Hair
  • Cleaner, fresher hair
  • Shinier Hair
  • Smoother Hair
Rated 5 out of 5
Review posted

My HOLY GRAIL!!!

I cannot fathom going without this EVER AGAIN.

Me new neighbor’s niece is a stylist and raves about this product. I had recently had my hair bleached and it was feeling like, well, it had been bleached! Initially I tried my “leave on 20min” moisturizing hair mask from another brand. It did ok.

I finally bought this - GAME CHANGER!

My hair is much lighter (weight) and smoother and way healthier than EVER before.

I can’t believe I thought I had my hair sorted before this came into my life. Now, my hair is actually living its best life.

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K18Hair PRO

Thank your neighbors niece for us! We appreciate your review Miranda!

Reviewed by Mary N.
Verified Buyer
I recommend this product
Age
55 - 64
Hair Concern
  • Frizz
  • Dryness
  • Split-Ends
Hair Type
  • Thick/Coarse
My Results
  • Less Frizz
  • Smoother Hair
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Love it

Have to say, the first time I used this product on my frizzy thick hair...I didn't think it was worth the large price. I continued to use it and quickly changed my mind! Love this product!

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K18Hair PRO

Thank you for your review Mary!

Reviewed by Jill B.
Verified Buyer
I recommend this product
Age
45 - 54
Hair Concern
  • Fragile/brittle hair
  • Dryness
Hair Type
  • Fine/Thin
My Results
  • Less Frizz
  • Visible Difference
  • Stronger Hair
  • Defined Curl/Wave Pattern
  • Smoother Hair
Rated 5 out of 5
Review posted

Absolute miracle

This product is amazing! Well worth the price for me.my hair is so soft now and my curl’s moisturized and frizz free. I would highly recommend this product…

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K18Hair PRO

Thank you Jill! Enjoy your hydrated curls! ;)

Reviewed by Nancy M.
Verified Buyer
I recommend this product
Age
65+
Hair Concern
  • Chemical damage
  • Fragile/brittle hair
  • Dryness
Hair Type
  • Fine/Thin
My Results
  • Less Frizz
  • Less Breakage
  • Soft Touchable Hair
Rated 5 out of 5
Review posted

Really softens and strengthens hait

I’ve used the travel version so got the larger one. Use about 1-2 x / week. I think has helped my hair. It does seem a bit flat by day 2-3.

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K18Hair PRO

Thank you Nancy for your review!

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
 
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HK
 
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SE
 
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Cyprus
CY
 
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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
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