leave-in molecular repair hair mask

Name: Leave-In Molecular Repair Hair Mask Deluxe Sample
Brand: K18Hair
SKU: K18-31001
Availability: InStock
Rating: 4.7 (9401 reviews)

4-minute leave-in treatment to reverse hair damage

$0

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description

A leave-in treatment mask for all hair types that clinically reverses damage in 4 minutes. The patented peptide technology works to repair damage from bleach, color, chemical services & heat – restoring strength, softness, smoothness, and bounce to hair.

Repairs Damage Caused By

Bleach + Color

Heat

Chemical Services

- 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.
- 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
  
  up to 91% original strength*
  
  up to 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.
- 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!
- 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.
  
  Start by using K18 after the first 4-6 washes. Then switch to maintenance mode for a boost of renewed strength, softness, smoothness, and bounce when needed.
- 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.

feel what's possible with K18

See how K18 unlocks our community's expression

4.7

Rated 4.7 out of 5 stars

Based on 9,401 reviews

93%would recommend these products

Reviews Summary

Customers say this leave-in hair mask transforms their hair texture and manageability after just one use. Many reviews mention noticeable improvements in softness and reduced frizz. Users with curly, fine, and color-treated hair report positive results. The mask works well for various hair types, with many noting improved texture and easier styling. While some mention the product's high price point, most find a little goes a long way. A few users recommend using conditioner alongside the mask for best results. Reviews consistently highlight the mask's effectiveness for addressing dry, brittle hair concerns.

Customers Talked About

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9,401 reviews

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Kollette M.
Verified Buyer
Reviewing
Jumbo Leave-In Molecular Repair Hair Mask 100mL
I recommend this product
Age 45 - 54
Hair Concern Chemical damage, Color-care
Hair Type Medium Density
My Results Less Frizz, Less Breakage
Rated 5 out of 5 stars
1 hour ago
Love this
Love this to help repair my bleached hair!
Was this helpful?
K
K18Hair
14 minutes ago
We love hearing this! 💗 We're so glad our Jumbo Leave-In Molecular Repair Hair Mask is helping repair your bleached hair. Thank you for the love! ✨
Jenny S.
Verified Buyer
Reviewing
K18 x Future Society Limited Edition Scent Mask
I recommend this product
Age 45 - 54
Hair Concern Color-care, Frizz
Hair Type Curly/Coily
My Results Less Frizz, Smoother Hair
Rated 4 out of 5 stars
3 hours ago
First time use
My hair was noticeably different after my first use. I left it in as instructed but my hair felt terrible all day. I washed and rinsed it out the next day and it was extremely soft and had less frizz.
Was this helpful?
K
K18Hair
2 hours ago
We love hearing that! 💗 We're so glad the K18 x Future Society Limited Edition Scent Mask left your hair feeling soft with less frizz. Thank you for sharing! ✨
danielle b.
Verified Buyer
Reviewing
Full-Size Leave-In Molecular Repair Hair Mask 50mL
I recommend this product
Age 45 - 54
Hair Concern Chemical damage, Split-Ends, Heat damage, Color-care, Frizz
Hair Type Straight/Wavy, Thick/Coarse, Grey Hair
My Results Less Frizz, Visible Difference, Smoother Hair, Shinier Hair, Soft Touchable Hair
Rated 5 out of 5 stars
4 hours ago
Worth the money!
Great hair mask! i have used the product a few times and can see and feel the difference,
Was this helpful?
K
K18Hair
3 hours ago
We love hearing that! 💗 We're so glad you can see and feel the difference with our Molecular Repair Hair Mask. Thank you for sharing your experience with K18! ✨
Nancy C.
Verified Buyer
Reviewing
Mini Leave-In Molecular Repair Hair Mask 15 mL
I recommend this product
Age 45 - 54
Hair Concern Chemical damage
Hair Type Medium Density
My Results Less Breakage, Smoother Hair, Soft Touchable Hair
Rated 5 out of 5 stars
7 hours ago
A good trial size for my bleached hair
I tried this mini mask after bleaching my shoulder-length hair. I’ve used it three times so far, applying a couple of pumps to towel-dried hair after washing and leaving it in. I haven’t used another product afterward, so I could get a clear sense of how my hair felt with the mask alone.
My hair feels soft after each use, without feeling dry, and that softness lasts until my next wash. I’ve also noticed less breakage. Those results have been consistent across the three times I’ve used it, which matters more to me than how it felt on the first day.
The 15 mL bottle makes sense as a trial, though I’ve only used it three times, so I can’t speak to longer-term results. For someone with bleached hair who wants to try K18 before committing to a larger bottle, I think it’s worth trying. I liked it enough that I’ll buy the full size next time.
Was this helpful?
K
K18Hair
6 hours ago
Thank you so much for the 5-star review, Nancy! We're thrilled the mini mask is delivering such great results for your bleached hair. We can't wait to have you try the full size! 💙✨
Jordan
Reviewing
Full-Size Leave-In Molecular Repair Hair Mask 50mL
I recommend this product
Age 18 - 24
Hair Concern Heat damage, Fragile/brittle hair, Frizz, Color-care, Chemical damage
Hair Type Curly/Coily
My Results Stronger Hair, Bouncy Hair, Visible Difference, Smoother Hair, Cleaner, fresher hair
Rated 5 out of 5 stars
20 hours ago
Loveee
My hair was so damaged after using it twice my curls came back n
Was this helpful?
K
K18Hair
19 hours ago
Thank you so much for the love! 💙 We're thrilled to hear you're loving the Full-Size Leave-In Molecular Repair Hair Mask and seeing such amazing results with your curls! ✨

*Disclaimers