K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Color, Chemical Services & Heat
$29.00
Price: $29.00
(as of Apr 28, 2025 09:59:56 UTC – Details)
From the brand
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Product Dimensions : 3.15 x 1.57 x 1.57 inches; 1 ounces
Item model number : K18-31007
UPC : 858511001289 746559900490 858511001371
Manufacturer : K18
ASIN : B09HR5KSR8
Country of Origin : USA
Customers say
Customers find the hair mask highly effective, with their hair becoming softer, smoother, and shinier. The product receives mixed feedback regarding hair repair and strength – while some report it helped heal over-processed bleached hair and stopped breakage, others say it didn’t improve their hair quality and became brittle over time. The bottle size is consistently criticized for being too small for the price, and customers find the product pricey.
AI-generated from the text of customer reviews
13 reviews for K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Color, Chemical Services & Heat
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$29.00
A. Sparks –
Really works.
Lives up to the hype. I’ve heard a lot about K18 but was skeptical. It’s getting warmer and more humid where I live and my hair gets frizzy in high humidity so I thought I’d give this a try. I used it this morning after my shower and it really does work. My hair feels soft, is nice and shiny and there is no frizz. It is light weight and smells good. I only used 4 pumps on my hair that is just above shoulder length. It is a little pricey to me but it seems to be worth it. I will likely buy this again – but maybe I’ll just use it in the summer when my hair gets frizzy.
JLR67 –
Believe the hype
I was honestly kind of expecting this to be one of those TikTok-viral, snake oil products. But my hair has become less shiny and healthy as Iâve aged (Iâm 57) and it has recently started to break off. I did a google search and found this product and decided to give it a try. Iâm so pleasantly surprised! First of all, itâs simple to use. But more importantly, the results are fantastic! It has no strong smell and it doesnât weigh my hair down. My hair is smooth and shiny and even has more volume. It looks so healthy and âyoungerâ. Itâs expensive, but I think Iâm going to have to make room for it in my beauty budget! You donât use regular conditioner when you use this product, so that will help offset the cost (because my regular conditioner is expensive too).
Roxi –
K18 Hair Mask â My Go-To for Soft, Strong Hair
The K18 Molecular Repair Hair Mask is by far my favorite K18 product. Iâve used it multiple times before, and each time my hair feels softer, stronger, and healthier. Itâs lightweight but highly effective, and I love how it repairs my hair without weighing it down. The Detox Shampoo and Molecular Repair Hair Mask are the only ones that really worked for my hair.Unfortunately, the regular shampoo, conditioner, and oil didnât work for meâthey left my hair dull and dry. But these two are worth the hype and have earned a spot in my routine.
nicole –
Savior
I cannot rave enough about the K18 Hair Maskâit has truly saved my hair! I used to pull my hair every day, causing so much damage and breakage. My hair was dry, brittle, and lacked any real shine or strength. After using this mask for a few weeks, the difference is incredible.The formula is super easy to apply, and a little goes a long way. Iâve noticed my hair feeling softer, looking shinier, and overall much healthier. The breakage has dramatically reduced, and the texture has improvedâmy hair feels stronger and more manageable. Itâs as if the mask has repaired the damage I caused over time.I now look forward to hair care days because I can actually feel and see the difference. If your hair has been through a lot, this mask is a game-changer! Itâs well worth the investment, and my hair has never looked or felt better. Highly recommend!
emily –
A must for chemically treated or bleached hair
Expensive but so worth it if you have chemically treated or bleached hair. I was worried it would feel thick or greasy but it just made my hair feel and look soft, shiny and healthy. Super easy to apply and light weight while being deeply nourishing. I applied more than suggested and still, my hair soaked it up. My hair stylist actually commented on how healthy my hair felt recently and I attribute it entirely to k18
jenny –
Was hoping Iâd hate it, but I LOVE it ð
It is pricey but effective. The first time I used it, I was confused because it doesnât feel effective right away. But WOW it made a huge difference in my hair, which is super damaged from both years of bleach and also a perm. My hair is less frizzy, softer, and more manageable when I use this. I did shampoo only, no conditioner. Then the K18. At that point my hair is already feeling good. If I add a tiny bit of oil, it is absolutely perfect. Feels like I never abused it. 10/10
Amazon Customer –
Fall in love with K18 for lots of $ LOL
I fell in love with the K18 Leave-In Molecular Hair Mask about a year ago after my hairdresser introduced me to it. While itâs on the pricier side, its effectiveness and quality make it worth every penny. When Iâm unable to splurge, I turn to my regular leave-in spray, Perfect 10 Lite.As someone with thin, color-treated hair that tangles easily and suffers from damage, this product has been a game changer. It shortens my shower time, extends the life of my conditioner, makes brushing my hair effortless, and leaves my hair looking healthy once styled.I recently purchased the larger size, fully aware of the cost. However, when I opened my package, I briefly thought I either ordered the smaller size by mistake or received the wrong item. I realized it was indeed the larger size I ordered and I debated returning it.The true test came when I woke up with a legit rat’s nest. I was so thankful I had this product on hand, as it made detangling much easier than previous times when I had nothing to help with the mess.One note: I read a review suggesting that you should rub the product between your palms to activate it before applying it to your hair. That makes sense, and Iâll definitely give it a try. However, I find it quite unethical that the company leaves this step out of the instructions on the box and bottle. It feels like they might not want you to use it correctly so that youâll need to buy more soonerâquite disappointing!
Lindserellyy –
One use made a difference
Yes, the bottle is TINY. However, I noticed a difference after one use!It says to skip conditioner, use the K18, wait 5 minutes, then add your hair products and style as usual. But with as thick as my hair is, I donât skip conditioner.Iâve been blonde for years and went back to my black roots. Used black box dye to cover up the random grays that would come through and got tired of that so started going back lighter. I got balayage and it ruined my hair. Tbh I donât think the hair stylist knew what she was doing but thatâs besides the point. My hair was falling out in huge clumps through out the day and when washing and brushing. The K18 has helped with the damage, added shine back to my hair, and lessened the amount of hair that falls out.Thereâs not much of a scent to the product. Itâs light weight. I use more than 4 pumps too. I use about 8-10 pumps. My hair is THICK and half way down my back length wise. I use this once a week and so far itâs been almost a month and I still have plenty left in the bottle. Itâs worth a try if your hair is damaged from bleach ðð¼
Maram Almilhim –
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Stella –
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Gabi –
Textura ligera, un pequeño pump da para media melena. Ideal para mantener pelo seco, estropeado o dañado. Leer bien el funcionamiento y el proceso. El olor podrÃa mejorar, huele a quÃmico. Percepción personal.
KP –
My hair was very damaged and whole this product is fairly pricey I felt that it really helped repair my damaged hair
Saf –
This is a fake. There are certain ways to check by the packaging if it is the real k18. Do your research. I thought the price seemed too good to be true. Well, it is!