

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.
✨ Unlock molecular strength for hair that speaks success
K18 Molecular Repair Hair Oil is a premium, silicone-free treatment that uses patented K18PEPTIDE™ technology to repair hair at a molecular level. Lightweight and suitable for all hair types, this 1 oz oil restores strength, smoothness, and natural bounce without greasiness or heavy residue. Ideal for professionals seeking a clean, effective solution to damaged or frizzy hair, it delivers long-lasting results with a subtle scent and minimal product usage.












| ASIN | B0BYT7QCFB |
| ASIN | B0BYT7QCFB |
| Best Sellers Rank | #2,622 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #24 in Hair Treatment Oils |
| Brand Name | K18 |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,578) |
| Global Trade Identification Number | 00858511001500 |
| Hair Type | All |
| Item Form | Oil |
| Item Volume | 30 Milliliters |
| Item Weight | 2.4 ounces |
| Item model number | K18-32011 |
| Liquid Volume | 1 Fluid Ounces |
| Manufacturer | K18 Hair |
| Manufacturer | K18 Hair |
| Material Type Free | Silicone Free |
| 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 Dimensions | 1.5 x 1.5 x 4 inches; 2.4 ounces |
| Scent Name | Unscented |
| UPC | 858511001500 |
| UPC | 858511001500 |
| Unit Count | 1.0 Fluid Ounces |
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
D**A
Soft Hair with a Truly Lightweight Feel
I absolutely love this product! It’s incredibly lightweight and feels like I have nothing on my hair, yet it leaves everything smooth and polished. It helps tame frizz without weighing my hair down, and the scent is very mild, which I really appreciate. A little truly goes a long way (I have short hair though), so the bottle lasts much longer than expected. Perfect if you want smoothing and softness without any heaviness!
J**Y
Great product, good price. Worth trying.
I purchased this product to try the hair oil since I'm super picky about oils on my hair. I was looking for a replacement for the oil I've been using which hasn't been hydrating enough with the winter weather. Although the product amounts are super small, they are large enough for you to try and see if you like them for your hair. I already knew I loved the leave in hair mask but had never tried the lightweight repair oil. For reference, I have super thick, dark brown hair that falls at my waist. The oil is extremely lightweight but does a great job of hydrating my ends - which are long overdue for a trim. It helps me extend time between washes since my ends look hydrated without looking greasy. I would definitely give this a try if you don't want to commit to the large expense of the bigger bottles.
L**R
No more frizzy hair 🤗
This is the most amazing hair oil and it drys. I have very straight, frizzy, dry hair , brittle and after one use my hair is so nice the dry frizzy, frizzy hair is gone. It looks great. I highly recommend this product.
M**E
Great for hydrating hair
It makes my hair look healthy, especially if my hair is super dry. The scent is fantastic! It makes my hair very soft, but use as little as possible, or else it will be super oily. The dropper makes it so easy to use, with dispersing too much product. I will say, it is very expensive for the amount you get. When they say it’s travel size, it sure is. I have thin hair, so I only need a little bit.
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.
E**.
A Great Hair Oil
So far, 5 five stars. Good size bottle, remains to be seen how long it will last. I feel like this does smooth my crazy textured hair, and hopefully provides lasting results. The scent is wonderful, not too strong but clean and happy. So far, would highly recommend.
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
Tengo decoloración en todo mi cabello, y este aceite no mancha mi rubio como otros aceites tipo moroccanoil.
C**N
En combinaison avec le k18 crème restructuration sublime les cheveux abîmés ou ternes. Les rends soyeux et brillants.
R**.
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
S**E
Very good and helpful
Trustpilot
1 month ago
1 week ago