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Jumbo Leave-In Molecular Repair Hair Mask 100mL
Regular price £120
Regular price £0 Sale price £120
Jumbo leave in molecular repair hair mask
Mini, Full, and Jumbo size leave in molecular repair masks lined up next to each other on a pink background.
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.
Red curly hair before and after results using k18.
get stronger, more resilient hair. left - 8x bleach without K18, right 8x bleach with K18
K18 mask benefits
where K18 molecular repair works
the K18 routine
maximze your repair
less is more
works for all hair types
where does K18 fit into your routine?
K18 routine guide
4.7
Rated 4.7 out of 5 stars
8,683 Reviews
bestseller

jumbo leave-in molecular repair hair mask

Size:
100 mL
Regular price £120
Regular price £0 Sale price £120
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Color:
100 mL

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Jumbo leave in molecular repair hair mask

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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.


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*Disclaimers

    • more to know
    • key benefits
    • how to use
    • dos and don'ts
    • ingredients
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Jumbo leave in molecular repair hair mask
Mini, Full, and Jumbo size leave in molecular repair masks lined up next to each other on a pink background.
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.
Red curly hair before and after results using k18.
get stronger, more resilient hair. left - 8x bleach without K18, right 8x bleach with K18
K18 mask benefits
where K18 molecular repair works
the K18 routine
maximze your repair
less is more
works for all hair types
where does K18 fit into your routine?
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 8,683 reviews
93%would recommend these products
Reviews Summary
Customers say this hair mask transforms damaged, bleached, and chemically-treated hair, making it softer, stronger, and more manageable. Many report significant improvements in hair texture, with reduced breakage, split ends, and frizz. Users with curly hair find it enhances curl definition and reduces dryness. The lightweight formula doesn't weigh hair down or leave residue. Many reviews mention it works particularly well for bleached hair, helping restore smoothness and shine. Some note the price is high but find it worthwhile since only small amounts are needed per use.
Customers Talked About
8,683 reviews
  • Melissa D. G.
    Verified Buyer
    Reviewing
    Jumbo Leave-In Molecular Repair Hair Mask 100mL
    I recommend this product
    Age 45 - 54
    Hair Concern Fragile/brittle hair
    Hair Type Medium Density, Straight/Wavy
    My Results Visible Difference
    Rated 4 out of 5 stars
    2 hours ago
    Still waiting for results

    Might work well with the entire product line, but hair feels waxy. I do think it has helped with the overall look, making it look thicker than it is.

    KU Profile picture for K18Hair UK
    K18Hair UK
    1 hour ago

    Thank you so much for your review, Melissa! 💙 We're glad to hear the mask is helping with your hair's appearance. We appreciate your feedback! ✨

  • Maggie B.
    Verified Buyer
    Reviewing
    Full-Size Leave-In Molecular Repair Hair Mask 50mL
    I recommend this product
    Rated 5 out of 5 stars
    2 hours ago
    5 stars

    Absolutely amazing products highly recommended 5⭐️⭐️⭐️⭐️⭐️

    KU Profile picture for K18Hair UK
    K18Hair UK
    1 hour ago

    Thank you so much, Maggie! 💗 We're thrilled to hear you're loving our Full-Size Leave-In Molecular Repair Hair Mask! Your support means everything to us! ✨

  • Eva C.
    Verified Buyer
    Reviewing
    Leave-In Molecular Repair Hair Mask Sample
    I recommend this product
    Rated 5 out of 5 stars
    7 hours ago
    Back for more

    The sample gave me 2 solid uses which worked great for me to return to buy it! It’s WILD how good this is. I am 53 yo female w/ mid length hair that recently started shredding and graying more. This helped w/ the dryness and shredding. Will continued using K18 and adding other products to my routine.

    KU Profile picture for K18Hair UK
    K18Hair UK
    5 hours ago

    Thank you so much for the love, Eva! 💙 We're thrilled the sample convinced you to make K18 part of your routine. Here's to healthier, stronger hair! ✨

  • Gareth S.
    Verified Buyer
    Reviewing
    Jumbo Leave-In Molecular Repair Hair Mask 100mL
    I recommend this product
    Age 45 - 54
    Hair Concern Frizz
    Hair Type Thick/Coarse
    My Results Less Frizz
    Rated 5 out of 5 stars
    23 hours ago
    Gray reversal

    I just started using this product one week ago. I am eager to see the results. It would also be great to reduce the amount of hair that sheds also. I will have to report back in several months to share my update.

    KU Profile picture for K18Hair UK
    K18Hair UK
    22 hours ago

    Thank you so much for your 5-star review, Gareth! 💙 We're excited to hear you're trying our Jumbo Leave-In Molecular Repair Hair Mask. We can't wait for your update! ✨

  • Lisa H.
    Verified Buyer
    Reviewing
    Jumbo Leave-In Molecular Repair Hair Mask 100mL
    I recommend this product
    Age 55 - 64
    Hair Concern Fragile/brittle hair, Color-care
    Hair Type Medium Density
    My Results Less Frizz, Bouncy Hair, Less Breakage, Soft Touchable Hair, Shinier Hair
    Rated 5 out of 5 stars
    23 hours ago
    I will be buying more

    From the very first time I used K18 leave-in molecular repair hair mask I could feel the difference in my hair. I admit I have been using it often and a few more pumps than the directions called for, but my hair was and still is heavily colored and had not really been treated properly. Bottom line is, I love the way my hair feels now. Ordering another bottle! Sorry I did not take a before photo.

    KU Profile picture for K18Hair UK
    K18Hair UK
    22 hours ago

    Thank you so much for the amazing review, Lisa! 💙 We're thrilled you're loving how the Jumbo Leave-In Molecular Repair Hair Mask feels on your colored hair. Here's to many more bottles! ✨

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