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🧴 Unlock molecular repair for hair that turns heads.
K18 Molecular Repair Hair Oil is a lightweight, silicone-free treatment infused with patented K18PEPTIDE™ technology that repairs hair damage at the molecular level. Suitable for all hair types, it strengthens, smooths, and restores shine without weighing hair down. Clinically proven and highly rated, this oil offers long-lasting results with minimal product needed, making it a must-have for professionals seeking healthier, frizz-free hair.





















| ASIN | B0CD84PNDD |
| Best Sellers Rank | #2,965 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #24 in Hair Treatment Oils |
| Brand | K18 |
| Brand Name | K18 |
| Customer Reviews | 4.3 out of 5 stars 2,818 Reviews |
| Hair Type | Chemically Treated, Curly, Fine, Straight, textured-hair |
| Item Form | Oil |
| Item Volume | 10 Milliliters |
| Item Weight | 22.68 g |
| Liquid Volume | 10 Milliliters |
| Manufacturer | K18 |
| Number of Items | 1 |
| Product Benefits | Our K18PEPTIDE™ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all Product Benefits Our K18PEPTIDE™ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all See more |
| Scent | Unscented |
| Scent Name | Unscented |
| UPC | 858511000794 |
K**P
Light, nongreasy oil, using only 1 drop!
This is the first hair oil I have used, so I have nothing to compare it to. However, this oil eliminates flyaway hairs on my shoulder length hair with only 1 drop. It does not leave a greasy feel and adds a bit of shine as well.
A**R
Weightless and less is more!!
This product, and the mask, have saved my bleached hair!!! I cannot rave ENOUGH about these products. While they are not the most budget friendly, if you are looking to bring life back to your hair without buzzing it off, these are a must in your routine!
F**D
Very good product
This works well and has a pleasant smell, it doesn’t leave my hair too oily.
X**O
Worth it for fried hair lol
Much more expensive compared to ogx and olaplex but worth the money. my hair is naturally almost black and 2c but I bleached it platinum. Its fried. Conditioners don’t make a difference for my hair but this (with olaplex 6) makes my hair look healthy again :-) I get compliments on how pretty my hair is and it’s returned to its curl. It takes like a hour for it to actually soften my hair up (my hair is low porosity). It’s not greasy and very lightweight. It has a very faint shampoo-generic smell but it doesn’t linger on hair. The 0.34oz lasted like 3 months so I decided it was worth it to invest in the full size. I recommend this line, specifically the oil and mask, to everyone I know who has been trying to make matrix and olaplex work for years lmao
J**Y
Hair feels soft
It is helping with my split ends without weighing down my hair or feeling greasy.
L**D
Finally a product worth trusting and little bit does go along ways! Loving it won't be without it!
Best oil i have ever tired after 2 days my hair is excellent and perfect.. husband love it too and so does everyone else!
I**A
100% worth the price!!
This stuff has absolutely saved my hair. I'm a huge fan of the K18 mask to start with and after going a little too hard while touching up my blonde highlights my hair was in major need of repair. I got this as it had the oil included and OH MY GOD can you tell the difference. Both of these products are absolute powerhouses! If your hair has any damage at all or is in need of moisture I can't recommend it enough! Definitely expensive but worth it.
A**A
Haven't noticed a dramatic change, but has helped somewhat !
I'm conflicted because the product seems to be doing something positive to my hair, but I can only see it when I straighten it/ blowdry it. If I were to use this & let my hair airdry naturally, I wouldn't be able to see a difference from before using the product. I don't think it has had a negative impact on my hair whatsoever, but for the price, content & how expensive the product is overall, I don't necessarily feel super inclined to re-purchase. HOWEVER ----- I have not used this product consistently every day 7 days a week. I use it usually on hair wash days, which is every 3 days. I had read somewhere it is best to use when hair is damp, so I don't apply it to my hair when it is dry. So I think my review might not be very fair. I can come back in a few months and review it / update. I do see a difference when I straighten it. It looks healthier at the ends (which is where I apply it) , and my ends don't look crunchy anymore. Not that they ever were, but they did look dry. I think in that sense (how dry my hair looked at the ends) it has done wonders. The only reason I am giving it 3 stars is -1 because I haven't seen results without heat in my hair, and -1 because of the price for a very small bottle. HOWEVER (again lol) it's lasted me like 2 months but that's only because I don't use it every day. Hope this review helps :)!!
B**Y
10 de 10
Tengo decoloración en todo mi cabello, y este aceite no mancha mi rubio como otros aceites tipo moroccanoil.
C**N
Restructure les cheveux abîmés
En combinaison avec le k18 crème restructuration sublime les cheveux abîmés ou ternes. Les rends soyeux et brillants.
R**.
K18 is top of its game
I’ve tried quite a few hair oils and this one is easily one of the best I’ve used. It’s really lightweight so it doesn’t leave my hair greasy, but it still makes it look smoother and shinier. I only need a couple of drops and it sorts out flyaways straight away, especially on the ends. It also works well on both damp and dry hair which I like. After a few uses my hair feels softer and a lot more manageable. It’s definitely on the pricey side, but a little goes a long way so the bottle lasts ages.
L**A
No difference
No difference
S**E
Use 1 drop
Very good and helpful
Trustpilot
2 weeks ago
2 weeks ago