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K18

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

  • Based on 1,190 reviews
Condition: New
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As low as $10.83 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Feb 21
Order within 2 hours and 2 minutes
Available payment plans shown during checkout

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 ‏ :


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 21

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.

Top Amazon Reviews


  • 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

  • Its magic
Size: 0.34 Fl Oz (Pack of 1)
I am shook with this product, I just ordered it and used it for the first time. And already saw a hugeee chance my hair is so soft and silky. This product it’s literally magic. If you have the chance to get this product do it. A little goes a long way😍😍😍😍
Reviewed in the United States on January 18, 2025 by Jennifer Sánchez

  • Works so well
Size: 1 Fl Oz (Pack of 1)
Love it - hair became healthier!
Reviewed in the United States on January 18, 2025 by Mayya Perova

  • Buy the big bottle!
Size: 0.34 Fl Oz (Pack of 1)
Bought this after a recommendation from my hair stylist. It’s incredible. Buy the big bottle!
Reviewed in the United States on February 1, 2025 by Stephanie Bradfish

  • 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

  • Wow! What a difference!
Size: 1 Fl Oz (Pack of 1)
My granddaughter introduced me to this. I have been dealing with medical problems and losing hair like crazy. I started using this a week ago and although I'm still losing hair it's not as much. My hair is softer and shines. I'm anxious to see how it will be in a few weeks.
Reviewed in the United States on January 5, 2025 by Doxie Mom

  • Overpriced and useless
Size: 0.34 Fl Oz (Pack of 1)
The suggested amount of 1-3 drops is ridiculous, especially if you have long or damaged hair. The droplet is tiny so 3 drops just disappears into the skin of your palms. Instead, I squeeze out all that’s in the droplet for each use, and even at that, I feel nothing. My hair doesn’t feel any different, and there’s still breakage. I have long hair and have been bleaching and coloring for the past 3 years, so I thought my hair type is ideal to test a product like this. Waste of money and full of pretentious false claims. ... show more
Reviewed in the United States on November 5, 2024 by Isabella

  • Hair product
Size: 0.34 Fl Oz (Pack of 1)
Works okay
Reviewed in the United States on January 1, 2025 by Amazon Customer

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