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K18

K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Color, Chemical Services & Heat

    • Based on 20,921 reviews
Condition: New
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$29.00 Why this price?

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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Dec 24
Order within 14 hours and 50 minutes
Available payment plans shown during checkout

Size: 0.51 Fl Oz (Pack of 1)


Brand: K18


Item Form: Cream


Hair Type: dry, All


Product Benefits: Our K18PEPTIDE™ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all See more


Age Range (Description): Adult


Product Dimensions ‏ : ‎ 3.15 x 1.57 x 1.57 inches; 1 ounces


Item model number ‏ : ‎ K18-31007


UPC ‏ : ‎


Manufacturer ‏ : ‎ K18


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great product
Size: 50 ml
Highly recommend. Expensive but now I know why. You only need a little though. The bottle lasts. Will definitely repurchase. I love the K18 line. Their products are transformative to say the least. Fantastic for my fine hair that has never been longer ever. And I'm 58 and I have the hair of my youth. Silky, soft with minimal breakage. If you're on the fence, let me make the decision for you. Some people claim it makes their hair fall out, but I just think that's the bad hair coming out that would've come out anyway. My stylist can't believe the health of my hair. I play with it as much as possible cause it's so pretty. ... show more
Reviewed in the United States on September 21, 2024 by Carolyne K.
    • Get it.
Size: 50 ml
It's worth it. I have 3c-4a hair. My hair is fine and prone to breakage. My hair is just better all around after using it regularly. I wash my hair once a week and use it every time. My strands are sturdier, way less little broken pieces, shinier. I'm also very prone to single strand knots and I'm seeing WAY less. I've been using this product for nearly a year but recently committed to using it with each wash. Since I've done that, I'm retaining more length too. Just do it. The price is steep but if you're looking for that one product that will revolutionize you hair, it's this one. ... show more
Reviewed in the United States on December 8, 2024 by Amara
    • Absolutely works great!
Size: 0.51 Fl Oz (Pack of 1)
My daughter brought me a sample tube from Ulta, I absolutely love this. I use it after I style my hair on the frizzy areas and it makes my hair look so healthy and soft. This is such a great product. Definitely ordering more when I run out.
Reviewed in the United States on December 6, 2024 by Matty Bug
    • Good quality hair product.
Size: 0.51 Fl Oz (Pack of 1)
Very good product to use on washed hair and leave it in, the reason why I don't give it a 5 is because it is very small and the price is not that cheap, but in general it is a quality product.
Reviewed in the United States on December 10, 2024 by Se hará la devolución por UPS store porque no hay Whole foods market en esta cuidad. Gracias
    • You need to give it a chance!
Size: 0.51 Fl Oz (Pack of 1)
I have been using K18 for a little over 3 months now, and let me just say - it has completely transformed my hair! I'm so glad I didn't give up because it took about a month and a half for my very damaged hair to show noticeable improvement, and that was with using it twice weekly. Now, my ends are so much softer and smoother, my hair is sleeker overall, and interestingly enough I can go about 5 days before it starts to look "greasy." Currently I use K18 once every week or two for maintenance, but it's definitely in my permanent hair product rotation. Worth every penny!! ... show more
Reviewed in the United States on December 3, 2024 by JPO
    • Best leave in I've ever used!
Size: 0.51 Fl Oz (Pack of 1)
I never write reviews, but this is a product worth mentioning. This product has changed my hair game. I have been using for a few months & my long hair (to my hips) has never been softer. I can tell a major difference in the overall health of my hair. My hair is fine and it does not weigh it down. The price is a little higher than I like BUT if you want something that actually works its worth the price!! I would give more than 5 stars if possible! ... show more
Reviewed in the United States on November 4, 2024 by JB
    • Fall in love with K18 for lots of $ LOL
Size: 50 ml
I fell in love with the K18 Leave-In Molecular Hair Mask about a year ago after my hairdresser introduced me to it. While it’s on the pricier side, its effectiveness and quality make it worth every penny. When I’m 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 I’ll 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 you’ll need to buy more sooner—quite disappointing! ... show more
Reviewed in the United States on October 7, 2024 by Amazon Customer
    • Effective but Pricey
Size: 0.51 Fl Oz (Pack of 1)
I recently tried the K18 Leave-In Repair Hair Mask Treatment, and while it definitely delivers on its promise to repair dry or damaged hair, I have to admit that the price tag is a bit steep for the size of the bottle. Let's start with the positives. This treatment truly works wonders on my hair. After just a few uses, I noticed a significant improvement in the texture and overall health of my hair. It feels softer, smoother, and looks much healthier. The mask effectively reverses the damage caused by bleach, color, chemical services, and heat, which is exactly what I was looking for. The application process is simple and convenient. I just apply the mask to my damp hair, It's a quick and easy addition to my hair care routine. However, I do have to mention that the price of this product is quite high considering the size of the bottle. While I understand that quality comes at a cost, I was a bit disappointed with the amount of product I received for the price I paid. It would be great if the company could adjust the pricing to make it more affordable for regular use. Despite the price concern, I have to say that the K18 Leave-In Repair Hair Mask Treatment is effective and delivers results. If you're willing to invest in your hair care routine and don't mind the higher price point, this product is worth considering. Just be aware of the bottle size and its impact on the overall value for money. In conclusion, the K18 Leave-In Repair Hair Mask Treatment is a powerful solution for repairing dry or damaged hair. It works wonders, but the price may be a deterrent for some. If you're willing to splurge a bit, you won't be disappointed with the results. ... show more
Reviewed in the United States on December 2, 2023 by Maria Fay

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