Accessibility statement Skip to content
free returns. buy with confidence
free shipping on orders $50+*
Mini Leave-In Molecular Repair Hair Mask 15 mL
Regular price $29
Regular price $0 Sale price $29
Meta
Leave-in molecular repair hair mask 15mL
Mini Leave-In Molecular Repair Hair Mask 15 mL
Red curly hair before and after results using k18.
Grey curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
get stronger, more resilient hair. left - 8x bleach without K18, right 8x bleach with K18
the K18 routine
Mini Leave-In Molecular Repair Hair Mask 15 mL
Mini Leave-In Molecular Repair Hair Mask 15 mL
less is more
works for all hair types
where does K18 fit into your routine?
Mini versus full size product comparison
Mini Leave-In Molecular Repair Hair Mask 15 mL
Mini Leave-In Molecular Repair Hair Mask 15 mL
K18 routine guide
4.7
Rated 4.7 out of 5 stars
9,415 Reviews
tsa-approved

mini leave-in molecular repair hair mask

Size:
15mL
Regular price $29
Regular price $0 Sale price $29
Save Infinity
Color:
15mL

Notify me when back in stock

Leave-in molecular repair hair mask 15mL

The Mini Leave-In Molecular Repair Hair Mask 15 mL (Size: 15mL) isn't available now, but enter your email below and we'll notify you as soon as it's back.

OR
description

A leave-in treatment mask that works on the molecular level to reverse hair damage in just 4 minutes*. The K18PEPTIDE™ is clinically proven to repair damage from bleach + color, chemical services and heat* – with immediate and lasting results to restore strength, softness, smoothness and bounce to hair.


20+ billion TikTok views 🔥 


*Disclaimers

    • ingredients
    • dos and don'ts
    • key benefits
    • more to know
    • how to use
Press + and − keys to zoom, arrow keys to pan.
Leave-in molecular repair hair mask 15mL
Mini Leave-In Molecular Repair Hair Mask 15 mL
Red curly hair before and after results using k18.
Grey curly hair before and after results using k18.
Red curly hair before and after results using k18.
Bleach blonde hair before and after results using k18.
get stronger, more resilient hair. left - 8x bleach without K18, right 8x bleach with K18
the K18 routine
Mini Leave-In Molecular Repair Hair Mask 15 mL
Mini Leave-In Molecular Repair Hair Mask 15 mL
less is more
works for all hair types
where does K18 fit into your routine?
Mini versus full size product comparison
Mini Leave-In Molecular Repair Hair Mask 15 mL
Mini Leave-In Molecular Repair Hair Mask 15 mL
K18 routine guide
got questions?
how does the k18 mask work?
what is the k18peptide™?
why skip conditioner?
i noticed there’s alcohol in the formula, isn’t that bad for you?
when should i expect to see results?
how to use molecular repair mask
feel what's possible with K18
4.7
Rated 4.7 out of 5 stars
Based on 9,415 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
9,415 reviews
  • Jennifer W.
    Verified Buyer
    Reviewing
    K18 x Future Society Limited Edition Scent Mask
    I recommend this product
    Age 35 - 44
    Hair Concern Chemical damage, Frizz, Heat damage
    Hair Type Medium Density, Curly/Coily
    My Results Less Frizz, Visible Difference, Less Breakage, Stronger Hair, Smoother Hair
    Rated 5 out of 5 stars
    1 hour ago
    Smells amazing!

    Smells amazing and works well!

    K Profile picture for K18Hair
    K18Hair
    14 minutes ago

    We love hearing this! 💗 We're so thrilled you're loving the scent and that the Limited Edition Mask is working beautifully for you. Thank you for the amazing review! ✨

  • Cheyenna H.
    Verified Buyer
    Reviewing
    Jumbo Leave-In Molecular Repair Hair Mask 100mL
    I recommend this product
    Age 25 - 34
    Hair Concern Chemical damage, Fragile/brittle hair, Dryness
    Hair Type Fine/Thin
    My Results Stronger Hair, Visible Difference, Less Frizz, Less Breakage
    Rated 5 out of 5 stars
    10 hours ago
    Far less breakage.

    This mask is amazing. I have been using it to prevent breakage on my fine, processed hair. I have seen a difference in hair retention in a short time. It’s really the only mask you need.

    K Profile picture for K18Hair
    K18Hair
    9 hours ago

    We love hearing this! 💗 We're so glad our Jumbo Leave-In Molecular Repair Hair Mask is making a difference in hair retention for you. Thank you for the amazing review! ✨

  • JENNIFER L.
    Verified Buyer
    Reviewing
    Leave-In Molecular Repair Hair Mask Deluxe Sample
    I recommend this product
    Rated 5 out of 5 stars
    12 hours ago
    Sweet!

    This hair mask leaves my hair so soft after I dye it!!!!

    K Profile picture for K18Hair
    K18Hair
    10 hours ago

    We love hearing this! 💗 We're so glad our Leave-In Molecular Repair Hair Mask is leaving your hair feeling so soft after coloring. Thank you for sharing your experience! ✨

  • Nesma M.
    Verified Buyer
    Reviewing
    Jumbo Leave-In Molecular Repair Hair Mask 100mL
    I recommend this product
    Age 35 - 44
    Hair Concern Heat damage, Fragile/brittle hair, Split-Ends
    Hair Type Medium Density
    My Results Less Frizz, Less Breakage, Visible Difference
    Rated 5 out of 5 stars
    17 hours ago
    K18 experience

    Effective

    K Profile picture for K18Hair
    K18Hair
    15 hours ago

    We love hearing this! 💗 We're so glad our Jumbo Leave-In Molecular Repair Hair Mask is working effectively for you. Thank you for the five-star love! ✨

  • tammy G.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50mL
    I recommend this product
    Age 55 - 64
    Hair Concern Chemical damage, Frizz, Dryness, Heat damage
    Hair Type Curly/Coily, Thick/Coarse, Straight/Wavy
    My Results Smoother Hair, Visible Difference, Less Frizz
    Rated 5 out of 5 stars
    18 hours ago
    The leave in Molecular repair mask is not a gimmick!

    I have natural curly hair dark brown hair. I have highlighted/ bleached it blonde for 35 years. I 97% I use a flat iron to straighten it. When my daughter was young she called it hay hair. I started using this in spring of 2024. People are amazed at how healthy my hair looks and feels.

    K Profile picture for K18Hair
    K18Hair
    17 hours ago

    We love hearing this! 💗 We're so thrilled the Molecular Repair Hair Mask is transforming your hair and that people are noticing the difference. Thank you for making K18 part of your routine! ✨

10