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full-size leave-in molecular repair hair mask
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
2. Apply 1-3 pumps 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 styling product + style as usual. Use for 4-6 washes, then as needed.
*k18hair.com/disclaimers
The Science Behind K18 Molecular Repair
See how our K18PEPTIDE™-powered mask reverses damage in 4 minutes for lasting + progressive hair health.
molecular repair for aging hair
Hair evolves with age. This is how to support your strands throughout the years.- Texture
- Protection
- Frizz
- Appearance
- Fragrance
- Christy H.Verified BuyerReviewingHeatBounce conditioning heat protectant 4ozI recommend this productAge 35 - 44Hair Concern Chemical damage, Heat damage, Color-care, Dryness, Fragile/brittle hairHair Type Fine/ThinMy Results Visible Difference, Stronger Hair, Smoother Hair, Shinier Hair, Cleaner, fresher hairRated 5 out of 5 stars1 week agoGreat heat protectant
I use this now after every wash to protect before styling. Works wonders and I can tell it is protecting my hair because my hair strength is improving.
KK18Hair3 days agoThank you so much for this amazing review, Christy! We're absolutely thrilled to hear that you love the HeatBounce conditioning heat protectant and that you're using it after every wash! It's wonderful that you can feel it protecting your hair and that your hair strength is actually improving - that's exactly what we love to hear about our heat protection! We're so excited that you're experiencing such fantastic results and thanks for your incredible 5-star review! 💛
- Mary S.Verified BuyerReviewingFull-Size Leave-In Molecular Repair Hair Mask 50mLI recommend this productAge 55 - 64Hair Concern Chemical damage, Fragile/brittle hair, Frizz, Dryness, Extending time between washesHair Type Curly/Coily, Grey Hair, Fine/Thin, Thick/CoarseMy Results Less Frizz, Visible Difference, Stronger Hair, Less Breakage, Defined Curl/Wave PatternRated 5 out of 5 stars1 week agoSaved my hair!!
I have curly heavily highlighted hair blended with corse gray curls coming in. Such a mix! And Curly hair alone is a bit fragile I also swim laps in a saltwater pool and have a hot tub I use often. I use K18 as on not the biggest mainstays in hair routine.
KK18Hair3 days agoThank you so much for this incredible review, Mary! We're absolutely thrilled to hear that K18 has saved your hair - that's exactly what we love to hear! It's wonderful that the Full-Size Leave-In Molecular Repair Hair Mask is working so beautifully for your curly, highlighted hair with those gorgeous gray curls coming in. We understand how challenging it can be to maintain healthy hair with swimming in saltwater pools and hot tub use, so we're so excited that K18 has become one of your biggest mainstays in your hair routine! Thanks for your amazing 5-star review! 💛
- Danielle D.Verified BuyerReviewingDamaged Hair Rescue SetI recommend this productAge 35 - 44Hair Concern Heat damage, Chemical damage, FrizzHair Type Thick/Coarse, Curly/CoilyMy Results Less Frizz, Smoother Hair, Soft Touchable Hair, Cleaner, fresher hair, Bouncy HairRated 4 out of 5 stars1 week agoDo it.. worth trying out
My hair feels ridiculously good. Have used the mask before - but the prep shampoo and heat protectant are both new to me. Was surprised at how clean my hair felt after the shampoo. And really enjoyed both the scent and softness left after the heat protectant. Curious to see any long term benefits. Wish the price was a bit lower - as I'd love to use K18 products all the time, and not just as a once in a while luxury.. but not able to with current prices!
KK18Hair3 days agoThank you so much for this wonderful review, Danielle! We're absolutely thrilled to hear that your hair feels ridiculously good with the Damaged Hair Rescue Set! It's amazing that you're loving the prep shampoo and how clean your hair feels, and we're so excited that you're enjoying both the scent and softness from the heat protectant. It's wonderful that you're already familiar with our mask and now getting to experience the full routine - that's exactly what we love to hear! We totally understand your feedback about pricing and really appreciate you sharing that with us. Thanks for your fantastic 4-star review and for encouraging others to try it out! 💛
- Shannon W.Verified BuyerReviewingFull-Size Leave-In Molecular Repair Hair Mask 50mLI recommend this productAge 45 - 54Hair Concern Chemical damage, Color-care, Heat damageHair Type Thick/Coarse, Medium DensityMy Results Stronger Hair, Less Breakage, Smoother Hair, Shinier HairRated 5 out of 5 stars1 week agoLove K18
I’m at hairstylist in K 18. Tina has been a complete game changer for me. I use it on myself and I am completely loving the results. I’m using the hair oil to leave in restructuring cream and the shampoo and conditioner and have had absolutely wonderful results. my hair is so silky brought the shine back instantly right after I had highlighted my hair, which usually takes a couple weeks for it feel healthy again.
KK18Hair4 days agoWe absolutely love hearing from hairstylists who are experiencing such amazing results ✨ So thrilled that K18 has been a complete game changer for you Shannon! Nothing makes us happier than knowing you're getting that instant shine and silky feel, especially right after highlighting. Thanks so much for sharing your professional experience with our full routine! 💛
- JencyReviewingFull-Size Leave-In Molecular Repair Hair Mask 50mLI recommend this productAge 25 - 34Hair Concern Frizz, Dryness, Fragile/brittle hairHair Type Curly/Coily, Straight/WavyMy Results Less Frizz, Bouncy Hair, Visible Difference, Defined Curl/Wave Pattern, Smoother HairRated 5 out of 5 stars1 week agoMy curls are back
I had the mini one and forgot bout it. Used it again today after like 2 months… and well this is my hair after it dried fully. Normally its VERY frizzy.
KK18Hair1 week agoWe're so thrilled to hear about your amazing results with the Full-Size Leave-In Molecular Repair Hair Mask, Jency! It sounds like rediscovering this product after 2 months was such a wonderful surprise - there's nothing quite like that feeling when you see your natural curl pattern come back to life and the frizz just melts away.
We love hearing stories like yours where customers reconnect with products that truly transform their hair. It's incredible how the molecular repair technology can help restore your curls to their beautiful, defined state. Thank you so much for sharing your experience - it really means the world to us to know that our mask is helping you embrace and love your natural texture!
