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K18

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

    • Based on 1,286 reviews
Condition: New
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$65.00 Why this price?

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As low as $10.83 / mo
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Apr 11
Order within 3 hours and 25 minutes
Available payment plans shown during checkout

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Size: 1 Fl Oz (Pack of 1)


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


Hair Type: Frizz,Frizz―repairing


Material Type Free: Silicone Free


Scent: Unscented


Liquid Volume: 30 Milliliters


Product Dimensions ‏ : ‎ 1.5 x 1.5 x 4 inches; 2.4 ounces


Item model number ‏ : ‎ K18-32011


UPC ‏ : ‎


Manufacturer ‏ : ‎ K18


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Apr 11

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • 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

    • It works perfectly
Size: 1 Fl Oz (Pack of 1)
This product, with K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Color, Chemical Services & Heat, helped me get my wavy hair looking and feeling soft after being extremely dry due to colouring with a non chemical hair colour product. It took several weeks but considering how my hair was, it was magic. Plus, I have no problem with my sensitive scalp. ... show more
Reviewed in the United States on February 23, 2025 by AMIH
    • Silky
Size: 0.34 Fl Oz (Pack of 1)
Amazing. Doesn’t leave any greasy residue and just melts onto the hair leaving it silky soft. I have noticed a positive difference in my split needs since using this product.
Reviewed in the United States on March 27, 2025 by Marissa
    • GREAT product!!
Size: 1 Fl Oz (Pack of 1)
The media could not be loaded. I am so glad I heard about k18 products. k18 makes a huge difference in my hair. My hair is naturally frizzy and gets really dry without any real reason (maybe from hard water), but after having my hair lightened with bleach it was much worse. I ended up with a ton of split ends and breakage which was really discouraging after growing my hair out for years, but K18 hair oil and k18 leave-in hair mask has made my hair so much healthier and manageable. It helps tame the frizz and leaves my hair so silky smooth without and residue feeling. If you use to many drops it will leave you hair lightly greasy, so just test out how many drops work for your hair type and length. My hair is to the middle of my back, I have fine, frizzy wavy, dry hair and I use 1-3 drops and I apply it to the ends of my hair and work it up half way (on some of the dryer spots I will add a little more to help repair that problem area). Then I brush my hair to make sure it gets on all hair strands. I like how it is heat safe and actually can help protect you hair from heat damage. ... show more
Reviewed in the United States on January 30, 2024 by Michaela
    • Love this hair oil, it is my fav, BUY IT.
Size: 1 Fl Oz (Pack of 1)
My hair LOOOOOOOOVES this oil, I know the price might seem steep, but it last literally forever I think I use 4 drops a day and I have had the same bottle for 10 months. Get it ladies!
Reviewed in the United States on March 11, 2025 by LR.
    • LOVE
Size: 0.34 Fl Oz (Pack of 1)
I have always hated Olaplex after I found k18. super expensive but definitely worth it. I took a star away only because of how small this $30 bottle is. Very tiny
Reviewed in the United States on January 27, 2025 by chloe
    • Expensive and Ineffective
Size: 1 Fl Oz (Pack of 1)
I had high hopes for the K18 Repair Hair Oil, especially since I purchased the entire K18 line. The shampoo, conditioner, detox shampoo, leave-in mask, and this oil. While I absolutely love the detox shampoo and leave-in mask, this oil was a complete letdown. For $65, I expected noticeable results, but I saw and felt no difference in my hair. It didn’t provide the level of repair, softness, or shine I was hoping for. Given how effective other K18 products have been for me, this one was especially disappointing. Definitely not worth the price—1 star. ... show more
Reviewed in the United States on April 1, 2025 by Roxi
    • Great product for fine hair
Size: 0.34 Fl Oz (Pack of 1)
I have fine thin hair and this works great. I use 2-3 drops and leaves my hair shiny and soft without feeling or looking oily
Reviewed in the United States on January 29, 2025 by steve kosel
    • Small K18 Hair
Size: 0.34 Fl Oz (Pack of 1)
Make sure to look at the OZ before purchase. This is a tiny bottle and pretty expensive for the amount provided. Scent is light and not greasy. I have long thick hair so it doesn't go a long way.
Reviewed in the United States on March 3, 2025 by T. Knoll

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