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$86.99 reg $112.00
Sale save $25.01 (22% off)
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About this item
Highlights
- Restore your hair with this at-home, leave-in treatment
- From heat to chemicals, this mask repairs the damage for stronger, smoother hair
- Relaxes each strand for a more youthful look and feel
- Rejuvenates roughness with hydrolyzed collagen
Description
Professional, at-home hair treatment mask with a patented peptide. K18 Leave-In Molecular Repair Hair Mask 5 oz repairs and restores your keratin levels while strengthening the cuticle of each strand from root to tip for more youthful vibrancy!
A cupboard full of products can't give you the results that K18's new leave in treatment does! When it comes to damage control, this is all you need. This easy-to-use formula penetrates deep into your strands for repair on every level. The microscopic level where Keratin meets Keratin is restored by K18Peptide so less breakage occurs. Alongside repairing damaged proteins, there's a conditioning ingredient that strengthens any weakened or brittle areas.
Hair Type: All Hair Types
Product Form: Cream
Beauty Purpose: Damage Repair
Net weight: 5 ounces
Package Quantity: 1
TCIN: 85972090
UPC: 858511001135
Origin: imported
The above item details were provided by the Target Plus™ Partner. Target does not represent or warrant that this information is accurate or complete. On occasion, manufacturers may modify their items and update their labels.
We recommend that you do not rely solely on the information presented. If you have a specific question about this item, you may consult the item's label, contact the manufacturer directly or call Target Guest Services at 1-800-591-3869.
If the item details aren’t accurate or complete, we want to know about it.
Shipping details
Estimated ship dimensions: 1.8 inches length x 1.8 inches width x 7.5 inches height
Estimated ship weight: 0.47 pounds
This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO, Alaska, Hawaii
item ships from third party seller: Beacon Beauty Center
Return details
This item can be returned to any Target store or Target.com.
This item must be returned within 30 days of the date it was purchased in store, shipped, delivered by a Shipt shopper, or made ready for pickup.
See the return policy for complete information.
Q: What proof can you show that this is a legitimate item?
submitted by mrsBetterhalf - 4 months ago
A: I just recieved mine and it is not authentic. There is no bar code on the actual bottle. In the photo there is a bar code. The product itself is not the same consistency as the authentic K18.
submitted byMOC - 12 days agoA: Hi! All of our products are 100% authentic because we only purchase directly from manufacturers and authorized distributors. All of our products have the original batch codes and most brands allow you to look these up.
submitted byBeacon Beauty Center - 4 months agoBrand expert
Q: Is this a genuine K18 product? The price seems so good for the amount of product considering a 1.7 oz is 75 usually.
submitted by Steph - 2 years ago
A: It was sold on the k18 website as a special Jumbo size for a limited time. The price was $120. It is no longer available on the K18 website. This was in May 2025. Jumbo Leave-In Molecular Repair Hair Mask 100mL - 100 mL SKU #: K18-31008 Quantity: 2 $240.00
submitted byAjinsanjosepoodlemom - 4 months agoA: I have same question. only thing I could find is that this size isn't even sold on the k18 website but is on their website for hair professionals? Still a lot cheaper than there.
submitted byHome - 1 year ago
Q: is this the same as K18 Leave-In Molecular Repair Hair Mask even though the name of the original say leave in and this doesn't. Does it have the same ingredients.
submitted by em - 1 month ago
A: Hi Em! This is not the same as the leave-in version because this is for professionals. However, this product is also meant to be left in and used without conditioner.
submitted byBeacon Beauty Center - 1 month agoBrand expert
Q: Can this mask be used on all hair types?
submitted by AI Shopping Assistant - 3 months ago
A: Yes, the K18 Professional Molecular Repair Hair Mask is suitable for all hair types.
submitted byAI Shopping Assistant - 3 months agoAi generated
Q: What is the net weight of the hair mask?
submitted by AI Shopping Assistant - 3 months ago
A: The net weight of the K18 Professional Molecular Repair Hair Mask is 5 ounces.
submitted byAI Shopping Assistant - 3 months agoAi generated
Q: Does the hair mask require rinsing after application?
submitted by AI Shopping Assistant - 3 months ago
A: No, this is a leave-in treatment, so it does not require rinsing after application.
submitted byAI Shopping Assistant - 3 months agoAi generated
Q: What is the main purpose of this hair mask?
submitted by AI Shopping Assistant - 3 months ago
A: The main purpose is damage repair, rejuvenating hair for a stronger, smoother appearance.
submitted byAI Shopping Assistant - 3 months agoAi generated
Q: How does the hair mask repair damage?
submitted by AI Shopping Assistant - 3 months ago
A: The mask uses a patented peptide to restore keratin levels and strengthen the hair cuticle.
submitted byAI Shopping Assistant - 3 months agoAi generated
Q: I just ordered K18 this size. But I need to make sure if it is legitimate?
submitted by K18 - 8 months ago
A: Hi! Yes, all of our products are 100% authentic because we only purchase directly from manufacturers and authorized distributors.
submitted byBeacon Beauty Center - 8 months agoBrand expert
Q: Can you provide evidence that these are genuine products? K18 does not have you listed as an authorized retailer.
submitted by Mocha88 - 1 year ago
A: Hi! We guarantee all of our items are 100% authentic because we only purchase directly from manufacturers and authorized distributors. We are not considered an authorized reseller because we sell many of our items below retail value.
submitted byBeacon Beauty Center - 1 year agoBrand expert
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effectiveness: 3.53 out of 5
quality: 3.13 out of 5
value: 3.21 out of 5
58% would recommend
17 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
1 January, 2026Verified purchase
Counterfeit item
Counterfeit item, package has marker on it and QR code is fake
1 out of 5 stars
Thumbs down graphic, would not recommend
26 September, 2025Verified purchase
FAKE PRODUCT
This is a fake/counterfeit product. Smell and texture is wrong. No barcode or QR code on actual full bottle.
1 out of 5 stars
Thumbs down graphic, would not recommend
19 August, 2025Verified purchase
Not real k18
Counterfeit item does not work like real k18 packaging and item is garbage
5 out of 5 stars
Thumbs up graphic, would recommend
8 May, 2025Verified purchase
Amazing, the real deal!
It is 100% original, I know because it smells, feels and looks like the real thing. I was concerned it was a fake for the price, but it is worth thr price
1 out of 5 stars
25 January, 2025Verified purchase
Fake
FAKE FAKE FAKE - DO NOT PURCHASE
1 out of 5 stars
Thumbs down graphic, would not recommend
17 January, 2025
NOT REAL K18
NOT GENUINE PRODUCT - the real k18 does not have a huge bar code on the side of the bottle. Additionally, when was the last time you saw instructions for use on a bottle use the word "usage" and NOT "directions". ITS FAKE GIRLIES, DO NOT PURCHASE.
1 out of 5 stars
Thumbs down graphic, would not recommend
1 November, 2024
Hair product
Target would not let me return and when I got it, there was a bunch of air bubbles and it wasn’t fully filled also made my hair smoke plz don’t trust this product
1 out of 5 stars
Thumbs down graphic, would not recommend
17 July, 2024Verified purchase
NOT AUTHENTIC!
COUNTERFEIT! Target should not be selling through 3rd party and duping its customers out of $100.
5 out of 5 stars
Thumbs up graphic, would recommend
17 May, 2023Verified purchase
Best Value
I love it... please bring it back. No doubt is the real thing but at a great value
1 out of 5 stars
Thumbs down graphic, would not recommend
15 April, 2023Verified purchase
COUNTERFEIT
Definitely counterfeit. Used immediately after ran out of authentic product and has a very strong smell of alcohol. Steer clear.
3 out of 5 stars
5 April, 2023Verified purchase
Question whether product is authentic?
I emailed k18 to make sure the product was authentic, and told the seller is not an authorized seller. Target would not let me return. I didn’t realize target sold from companies that are not authorized.
1 out of 5 stars
30 March, 2023
No product or pump broken
The product hardly comes out of the container. Almost like it’s empty already. I’ll pump multiple times and hardly anything comes out. I think the pump is broken.
5 out of 5 stars
Thumbs up graphic, would recommend
4 March, 2023Verified purchase
Amazing product
This product is awesome
2 out of 5 stars
1 March, 2023
Faulty pump/less product
The K18 mask as a whole is great. The bottle I received has tons of air bubbles and hardly any product comes out with each pump, and it seems like there isn’t the full amount of product inside. I’m afraid there was a reason that this is being sold at such a discounted/good price.
5 out of 5 stars
Thumbs up graphic, would recommend
28 February, 2023Verified purchase
Holy Grail for Damaged Hair!
This is a great hair repairing treatment for all types of hair damage! I’m so happy Target had this value size at such a great deal!
5 out of 5 stars
Thumbs up graphic, would recommend
25 February, 2023Verified purchase
Must have!!
AMAZING product for an OUTSTANDING price! You can’t beat this deal
5 out of 5 stars
Thumbs up graphic, would recommend
24 February, 2023Verified purchase
Damaged hair look no further!
I purchased the “full” size from Sephora last year which did last me a good amount of time so when I saw this I knew it was going to be a steal!
5 out of 5 stars
Thumbs up graphic, would recommend
22 February, 2023Verified purchase
Good!
Received one with a broken pump but otherwise this product is a 10/10.
5 out of 5 stars
Thumbs up graphic, would recommend
21 February, 2023
Worth the money!
Amazing product, leaves my hair looking healthy and hydrated.
5 out of 5 stars
Thumbs up graphic, would recommend
20 February, 2023
Nice product
So far so good! I have only used this twice and my dry ends look significantly better. I still need to use it awhile longer before I can say it’s amazing for certain, but overall I am happy with it so far.