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✨ Unlock stronger, shinier hair with science-backed weightless magic!
K18 Molecular Repair Hair Oil is a biotech-engineered, silicone-free treatment that strengthens and repairs hair at a molecular level using patented K18PEPTIDE® technology. This lightweight, non-greasy formula reduces frizz, breakage, and split ends while enhancing shine and protecting hair from heat and environmental damage. Suitable for all hair types, it delivers salon-quality results with just a few drops.



















| ASIN | B0BYT7QCFB |
| Benefits | Our K18PEPTIDE® repairs hair at a molecular level across multiple types of bonds, restoring hair health for all |
| Best Sellers Rank | 8,359 in Beauty ( See Top 100 in Beauty ) 74 in Hair Oils |
| Brand Name | K18 |
| Country Of Origin | USA |
| Customer Reviews | 4.4 out of 5 stars 2,588 Reviews |
| Global Trade Identification Number | 00858511001500 |
| Hair Type | All |
| Hair type | All |
| Item Form | Oil |
| Item Type Name | This biotech-engineered weightless oil works on all hair types to strengthen, repair damage, reduce frizz at two levels of the hair fiber, and improve shine. |
| Item Volume | 30 Millilitres |
| Item Weight | 0.15 Pounds |
| Item form | Oil |
| Liquid Volume | 1 Fluid Ounces |
| Liquid volume | 1 Fluid Ounces |
| Manufacturer | K18 |
| 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 benefits Our K18PEPTIDE® repairs hair at a molecular level across multiple types of bonds, restoring hair health for all See more |
| Scent | Fresh Floral |
| Scent Name | Fresh Floral |
| UPC | 858511001500 |
| Unit Count | 30.0 millilitre |
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**C
Tames wild hair
This has transformed my hair routine. Keeps my hair controlled and can now go a lot longer between washes.
C**E
Hair oil
Excellent product I bleach my often and since using this oil i have not suffered any breakages would recommend
R**U
I have no idea
I don't know if this is doing any thing or not, I feel like I should have got the conditioner instead or as well as (and I will do so), my hair does feel better but I'm unsure if that's due to this product or changing my whole routine. You can only use a small amount of this, and that is why it's hard to tell I think - you don't feel like you're doing anything, how can 3 drops cover a head of hair? I am trusting the science - I will update this review in a while. It is good that you don't have to use much because its expensive lol. I got it after reading reddit - great place for honest reviews , and they rave about it over there and its highly recommended for what is basically dead hair
K**R
👍
👍
B**N
It works
This product is very small. Not a lot in it but it works
M**N
Damages hair
Hair started falling out when combing my hair and dried out my hair even after following instructions
D**A
Very good for dry hair
I have course, thick, dry Mediterranean hair. Putting this on my ends has really helped my hair feel a lot softer and healthier.
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.
L**A
No difference
No difference
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.
S**E
Use 1 drop
Very good and helpful
Trustpilot
5 days ago
3 weeks ago