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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 20,790 reviews
Condition: New
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$75.00 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 Sunday, Dec 29
Order within 19 hours and 50 minutes
Available payment plans shown during checkout

Size: 50 ml


Brand: K18


Item Form: Cream


Material Feature: Natural


Hair Type: Damaged


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


Product Dimensions ‏ : ‎ 3.54 x 1.57 x 3.54 inches; 3.2 ounces


Item model number ‏ : ‎ K18-31005


UPC ‏ : ‎


Manufacturer ‏ : ‎ K18


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Dec 29

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.

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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.
    • 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
    • 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
    • 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
    • Expensive- but worth it
Size: 50 ml
I was sceptical but read do many good reviews that I decided to try it. My hair was over processed and in very poor shape- I have used this 3 times so far and my hair is not just back - it’s in fabulous condition and feels amazing. I’m hooked-just wish it were cheaper but I think it will actually cut down on visits to the hairdresser as my hair looks so good now. Definitely worth the money. ... show more
Reviewed in the United States on October 4, 2024 by G&B
    • I never thought I could love a leave in!
Size: 0.51 Fl Oz (Pack of 1)
I’ve tried many a leave in conditioner and they always left my hair feeling heavy and sticky. They just weren’t right for my hair type, which is thinning, damaged, and dry. I also live in the very humid state of Florida. I watched a YouTuber who happened to have gorgeous hair, but had nothing to do with the beauty industry. She had gotten a lot of questions on her hair and recommended this. I’m soooo glad I hit buy it now! This is the best conditioner, hair mask, and leave in conditioner I’ve ever used. I’ve been using for about 3 weeks and I only wash about 1-2 times per week. In this 3 weeks, I suddenly have shine, volume, and no longer feel a need to blow out my hair, or curl, or iron it. I simply blow dry my roots about 10 minutes after applying from mid length to ends. Let the rest air dry and holy cow, the difference!! I’ll wrap it up in a soft scrunchie once dry for sleeping and when I wake up, it looks like I had it professionally done! The shedding had been much less since I started using. I don’t know if that’s from this or just a natural cycle and to be fair, I also dyed my hair from copper back to my natural dark brown. But this is now a forever staple in my hair routine. The smell is pleasant and not overbearing. My hair feels stronger, and I’m not finding the tangles I once was. My hair used to be so dry that I couldn’t get a brush through it. ... show more
Reviewed in the United States on October 14, 2024 by Best leggings ever. Smooth material. Does not pick up on fuzz, tucks everything in nice and smooth, and super comfortable!
    • AMAZING BUT…. It’s only half as much as you think you’re getting.
Size: 50 ml
The media could not be loaded. I absolutely love this product but I am super super disappointed in the fact that when you buy the bottle for $75, it is only half the amount you think it is. You can watch my video and see what I’m talking about but there’s a hole in the bottom of the container and it’s just air half of it. Also, they should have included in their instructions to rub the product in your hands for 30 seconds or until pasty white before you put it in your hair. It activates it. It’s a major step. Besides all of that I really love this product and it has seriously helped my hair and would highly recommend using it but I do not think it’s cost-effective. Especially with the company duping people into thinking they are getting more product than they are. That’s bull crap. I will probably buy it again, but use it very sparingly. But it is a great product and if you have really damaged hair, I would definitely buy this if your hair matters to you a lot. I will reach out to the company and ask if they can offer more product for the amount that they are charging because that’s just kind of ridiculous. I would’ve given this product a five stars if it wasn’t for that. ... show more
Reviewed in the United States on March 3, 2024 by Janelle

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