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mini size leave-in molecular repair hair mask 15mL
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Biotech-powered K18PEPTIDE(TM) reverses hair damage in 4 minutes. Straight hair after bleach without K18and straight hair after bleach with K18.
highly concentrated formula = a little goes a long way
Before and after image using detox, mask, conditioner, and oil
full size leave in mask- start with 1 pump add more as needed. Mini size mask- start with 3 pumps add more as needed.
Clinically proven to reverse damage from: bleach + color, chemical services, and heat.
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Where does K18 fit into your routine? 1. Shampoo (skip conditioner) 2. Towel dry 3. K18 4. wait for minutes 5. everything else
mini size leave-in molecular repair hair mask 15mL
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Biotech-powered K18PEPTIDE(TM) reverses hair damage in 4 minutes. Straight hair after bleach without K18and straight hair after bleach with K18.
highly concentrated formula = a little goes a long way
Before and after image using detox, mask, conditioner, and oil
full size leave in mask- start with 1 pump add more as needed. Mini size mask- start with 3 pumps add more as needed.
Clinically proven to reverse damage from: bleach + color, chemical services, and heat.
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Where does K18 fit into your routine? 1. Shampoo (skip conditioner) 2. Towel dry 3. K18 4. wait for minutes 5. everything else
4.9
Rated 4.9 out of 5 stars
2,238 Reviews
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mini leave-in molecular repair hair mask

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

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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.


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*Disclaimers

Repairs Damage Caused By

Bleach + Color

Heat

Chemical Services

    • 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 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

    • 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 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
    • how to use
      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
    • 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
molecular repair hair oil
View Product
PEPTIDE PREP™ detox shampoo
View Product
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mini size leave-in molecular repair hair mask 15mL
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Biotech-powered K18PEPTIDE(TM) reverses hair damage in 4 minutes. Straight hair after bleach without K18and straight hair after bleach with K18.
highly concentrated formula = a little goes a long way
Before and after image using detox, mask, conditioner, and oil
full size leave in mask- start with 1 pump add more as needed. Mini size mask- start with 3 pumps add more as needed.
Clinically proven to reverse damage from: bleach + color, chemical services, and heat.
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Where does K18 fit into your routine? 1. Shampoo (skip conditioner) 2. Towel dry 3. K18 4. wait for minutes 5. everything else
mini size leave-in molecular repair hair mask 15mL
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Before and after using k18 professional leave in hair mask and professional hair mist.
Biotech-powered K18PEPTIDE(TM) reverses hair damage in 4 minutes. Straight hair after bleach without K18and straight hair after bleach with K18.
highly concentrated formula = a little goes a long way
Before and after image using detox, mask, conditioner, and oil
full size leave in mask- start with 1 pump add more as needed. Mini size mask- start with 3 pumps add more as needed.
Clinically proven to reverse damage from: bleach + color, chemical services, and heat.
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Mini Leave-In Molecular Repair Hair Mask 15 mL (WHOLESALE)
Where does K18 fit into your routine? 1. Shampoo (skip conditioner) 2. Towel dry 3. K18 4. wait for minutes 5. everything else
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.

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.

soft, strong, bouncy hair for everyone

Repair damage for hair like new* in 4 minutes.

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after
"I have fallen in LOVE with this product and i haven’t had a single client disappointed"
- Sydne S.
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after
"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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after
"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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after
"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.
before afer
before
after
"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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after
"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.

Explore the Science EXPLORE THE SCIENCE
see K18REPAIR™ in action
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
The Top K18 Mask FAQs
answering your most-asked questions.
about The Top K18 Mask FAQs
How much leave-in mask should you use?
/ products
How much leave-in mask should you use?
A handy dosage guide for every hair type, density, and length.
about How much leave-in mask should you use?
How to Build Your Clients’ Take-Home Routines with K18 Mask + DAMAGE SHIELD
/ business
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
about How to Build Your Clients’ Take-Home Routines with K18 Mask + DAMAGE SHIELD
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See how K18 unlocks our community's expression

4.9
Rated 4.9 out of 5 stars
Based on 2,238 reviews
97%would recommend these products
Customers Talked About
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2,238 reviews
  • Deb M.
    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, Heat damage, Color-care, Dryness, Split-Ends
    Hair Type Fine/Thin
    My Results Less Frizz, Smoother Hair
    Rated 5 out of 5 stars
    Yesterday
    Magical!

    Love everything about this product

    Was this helpful?
    K18Hair PRO
    Yesterday

    Thank you so much for your amazing review! 💛 We're thrilled to hear you're loving our Full-Size Leave-In Molecular Repair Hair Mask. Your support means the world to us! ✨

  • Amrita S.
    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, Fragile/brittle hair
    Hair Type Fine/Thin
    My Results Stronger Hair, Less Breakage
    Rated 5 out of 5 stars
    3 days ago
    Instant difference

    I have very poor quality hair postpartum which break so often. I have used K18 and in a week the breakage has reduced substantially. I had also done keratin sometime ago and needless to say K18 is slowly overturning the damage.

    Was this helpful?
    K18Hair PRO
    3 days ago

    Thank you so much for your amazing review, Amrita! 💛 We're thrilled to hear the Leave-In Molecular Repair Hair Mask is helping reduce breakage and restore your hair's health. Here's to stronger, healthier hair days ahead! ✨

  • 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
    4 weeks 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
    4 weeks 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
    4 weeks ago
    Can’t live without

    Helps my blonde hair so much

    Was this helpful?
    K18Hair PRO
    4 weeks 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 month 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 month 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!

*Disclaimers