K18

K18 Molecular Repair Hair Oil Weightless Oil for Stronger Healthier Hair Suitable For All Hair Types 1 Fl

53+ bought in the past month

$65.00

About this item

  • Reverses frizz-causing damage: works at the molecular level to repair damaged hair, which is more susceptible to frizz
  • Reduces frizz + flyaways: natural oils work on the surface of the hair to smooth the cuticle + soften without weighing hair down
  • Enhances shine + color vibrancy: nourished, moisturized hair reflects higher shine and boosts color dimension
  • To prevent further frizz-causing damage up to 450Β°f (232Β°c)
  • Strengthening, smoothing hair oil works on two levels of the hair fiber to fight frizz.
$65.00

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Delivery β€” 20 Apr – 24 Apr
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Product details

Product BenefitsOur K18PEPTIDEβ„’ repairs hair at a molecular level across multiple types of bonds, restoring hair health for all See more
Hair TypeAll
Material Type FreeSilicone Free
ScentUnscented
Liquid Volume1 Fluid Ounces

Technical specifications

product_dimensions1.5 x 1.5 x 4 inches; 2.4 ounces
item_model_numberK18-32011
upc858511001500
manufacturerK18 Hair
best_sellers_rank#2,200 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #26 in Hair Treatment Oils

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Customer reviews

4.32,486 ratings

Customers say

Customers find the hair oil effective, with one noting it works wonders on taming frizz, and they appreciate how it makes hair silky smooth without looking or feeling greasy.

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No more frizzy hair πŸ€—

Linda Millerβ€”February 3, 2026βœ“ Verified purchase

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. Read more

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Great product, good price. Worth trying.

Janellyβ€”November 29, 2025βœ“ Verified purchase

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. Read more

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A Great Hair Oil

em n.β€”January 7, 2026βœ“ Verified purchase

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. Read more

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2 drops

Michelleβ€”January 21, 2026βœ“ Verified purchase

My first 2 drops were yesterday as soon as I opened the package and I'm absolutely shocked with the results in my hair, I'm not exaggerating at all my ends look beautiful and healthy and overall my hair feels so soft I'm very obsessed with this brand Read more

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Great for hydrating hair

Morgan McBrideβ€”December 22, 2025βœ“ Verified purchase

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. Read more

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Haven't noticed a dramatic change, but has helped somewhat !

Andreaβ€”December 30, 2025βœ“ Verified purchase

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 :)!! Read more

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100% worth the price!!

Izzie Aβ€”December 15, 2025βœ“ Verified purchase

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. Read more

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Great stuff for frizzy hair

sandieβ€”February 7, 2026βœ“ Verified purchase

My hair was fine until I left the house. Once outside in humidity..it frizzed up. This is the best thing I’ve bought for my hair. And I have thin hair Read more

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