Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
Client Mask Pack
4.9
Rated 4.9 out of 5 stars
2,218 Reviews

client mask pack

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

Send every client home with a trial-sized molecular repair hair mask gift. This convenient 5-pack allows clients to continue hair repair between appointments for better service results at their next visit. 


Repairs Damage Caused By

  • Bleach + Color
  • Heat
  • Chemical Services

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. Apply all over, maximum recommended usage is 3 dime-sized amounts.
  4. Wait 4 minutes. Do not rinse out.
  5. Then comb, add styling product + style as usual.
  6. Use for 4-6 washes, then swap to maintenance mode and use as needed.

  • Leave-in treatment mask for all hair types reverses damage in 4 minutes. Helps maintain your client's hair strength and elasticity in-between appointments.

  • Patented K18PEPTIDE™ technology works to repair damage from lightener* + color*, chemical services*, and heat**—restoring strength, softness, smoothness, and bounce to hair.


*Disclaimers

  • 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!

One use of leave-in molecular repair hair mask delivers:

  • Healthier hair in 4 minutes*
  • Damage repair from lightener**, color**, chemical services**, and heat***
  • Immediate and progressive results****
  • Vegan, color-safe, cruelty-free

*Disclaimers

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.

Description

Send every client home with a trial-sized molecular repair hair mask gift. This convenient 5-pack allows clients to continue hair repair between appointments for better service results at their next visit. 


got questions?
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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.
soft, strong, bouncy hair for everyone
Repair damage for hair like new* in 4 minutes.
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"I have fallen in LOVE with this product and i haven’t had a single client disappointed"
-Sydne S.
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"I was so excited to try this stuff and then when I saw results instantly I knew I was in LOVE!!!"
- Shannon O.
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"Hands down the best product I’ve used to repair damaged hair. I live by this product and my clients love it too!"
- Nicole C.
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"This product is a game changer, especially for blondes! I have seen some of the most damaged hair become like new again! It’s a miracle! Ty K18!"
- Lacey P.
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"I absolutely love this product on my clients and myself!!! As a hairdresser, I’ve tried all those bond builders and what not and yes they are great but what sets k-18 apart from these other bond builders is that the technology behind it really goes deep into the hair. I have had many of my clients who had so many compliments about how healthy their hair looks and feels."
- Justina M.
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"This stuff stomps the yard! I cannot even fathom coloring or lightening hair, without K18. It’s in my prices and no one complains because their hair feels and looks amazing. The client below tried at home lightening and came in to have it fixed."
- Ryan H.
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"I’m currently in cosmetology school so of course all my family and friends want me to do their hair! Ive started using K18 on anyone i have to bleach and its like a little miracle!"
- Nicole M.
powered by K18PEPTIDE™

Biomimetic peptide clicks into hair’s keratin structure—the source of core strength—for soft, shiny, bouncy results that won’t wash away.

learn more
how to use K18
lightener / color
1. Section dry hair into 4 quadrants.

2. Apply a minimum of 10 full sprays of K18 professional molecular repair hair mist to each quadrant, increasing up to 20 sprays per quadrant as needed, depending on client’s length, density, or level of damage.

3. Wait 4 minutes (do not rinse out).

4. If needed, dry the hair prior to applying lightener or color. Then perform your desired technique.

5. Process your lightener or color as usual, then rinse and shampoo with K18 PEPTIDE PREP™ detox shampoo. Do not condition.

6. 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.

7. Wait 4 minutes (do not rinse), then apply 1-3 drops of K18 molecular repair hair oil to mid-lengths and ends.

8. Wait 4 minutes, then proceed with cut or style as usual.

9. Add an additional 1-3 drops of K18 molecular repair hair oil to dry hair as a finisher.

Please see the “K18 + toning or glossing” section for more information on toning with K18.
learn more on our blog

The Top K18 Mask FAQs

 answering your most-asked questions.

How much leave-in mask should you use?

 A handy dosage guide for every hair type, density, and length.

How to Build Your Clients’ Take-Home Routines with K18 Mask + DAMAGE SHIELD

 A PRO’s top tips for building your clients’ take-home routines

Can You Air Dry Without Frizz?

 How to get the smoothest results possible, whatever the forecast.  

K18 FUNdamentals 02: Masks + Conditioners vs. K18

 You know what's fun? When your product works. We'll be breaking down key info + recommendations weekly to help you get the most out of K18   We’re ...

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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 2,218 reviews
97%would recommend these products
Customers Talked About
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2,218 reviews
  • Melanie G.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50 mL (WHOLESALE)
    I recommend this product
    Age 25 - 34
    Hair Concern Chemical damage, Heat damage, Fragile/brittle hair, Split-Ends
    Hair Type Fine/Thin
    My Results Shinier Hair, Smoother Hair, Soft Touchable Hair, Visible Difference, Stronger Hair
    Rated 5 out of 5 stars
    6 days ago
    Love this stuff!

    I'm trying to grow out my natural hair which I used to bleach, and this stuff has been a total miracle product! Transitioning away from bleach is usually a nightmare of breakage and split ends, but since adding K18 to my routine, I’ve noticed a massive difference. It actually makes my hair feel stronger, healthier, and way more resilient. It’s significantly cut down on the snap-and-breakage I used to get, allowing me to finally retain some length.

    Was this helpful?
    K18Hair PRO
    6 days ago

    Thank you for sharing your experience, Melanie! We're thrilled to hear K18 has helped strengthen your hair and reduce breakage during your transition from bleaching. Your hair health journey means so much to us!

  • Pearl D.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50 mL (WHOLESALE)
    I recommend this product
    Age 25 - 34
    Hair Concern Chemical damage, Heat damage, Color-care, Frizz, Fragile/brittle hair
    Hair Type Curly/Coily
    My Results Visible Difference, Less Breakage, Stronger Hair, Defined Curl/Wave Pattern, Cleaner, fresher hair
    Rated 5 out of 5 stars
    1 week ago
    Can’t live without

    Helps my blonde hair so much

    Was this helpful?
    K18Hair PRO
    1 week ago

    Thank you Pearl! We're so happy to hear our Leave-In Molecular Repair Hair Mask has become essential for your blonde hair. Your support means everything to us!

  • Crystal G.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50 mL (WHOLESALE)
    I recommend this product
    Age 45 - 54
    Hair Concern Chemical damage, Color-care, Frizz, Fragile/brittle hair, Extending time between washes
    Hair Type Fine/Thin
    My Results Less Frizz, Visible Difference, Stronger Hair, Less Breakage
    Rated 5 out of 5 stars
    1 week ago
    Amazing

    True believer in you get what you pay for! This leave in has helped my hair do much after an over processing disaster. Could notice the difference even after one use. I’ve basically gotten rid of regular wash out conditioner and use only this and another one from Redken that I alternate with!

    Was this helpful?
    K18Hair PRO
    1 week ago

    Thank you for your amazing review, Crystal! We're thrilled the mask helped repair your over-processed hair and that you noticed results after just one use!

  • Nucole N.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50 mL (WHOLESALE)
    I recommend this product
    Age 25 - 34
    Hair Concern Heat damage, Chemical damage
    Hair Type Curly/Coily
    My Results Stronger Hair, Defined Curl/Wave Pattern
    Rated 5 out of 5 stars
    2 weeks ago
    K18

    I have been using this for a week now and I have great results my curls are coming back so much better still have a long way to go but this product is amazing

    Was this helpful?
    K18Hair PRO
    2 weeks ago

    Thank you for the wonderful review! We're so happy to hear your curls are coming back and that you're seeing great results with the Molecular Repair Hair Mask already!

  • Dena F.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50 mL (WHOLESALE)
    I recommend this product
    Age 18 - 24
    Hair Concern Split-Ends
    Hair Type Fine/Thin
    My Results Less Frizz, Visible Difference, Less Breakage, Smoother Hair
    Rated 5 out of 5 stars
    3 weeks ago
    Good stuff

    I have very baby fine hair. I have been struggling to find a shampoo and conditioner that will make my hair look, soft and shiny and not weighed down and drab. I've only been using this for two weeks so far so good definite improvement in the texture my hair softer and shinier. I can't use the hair oil because it's too heavy for my hair., I will keep working with it. The molecular hair oil works really well from my daughter's hair and my son. I love how this company gives out decent samples too. It's such a good way to share with other people and then try the product before you wired to see if it works well for you or not.

    Was this helpful?
    K18Hair PRO
    3 weeks ago

    Thank you for the wonderful review! We're so happy to hear the Molecular Repair Hair Mask is making your fine hair softer and shinier. Thanks for sharing your experience!