










🧴 Unlock molecular repair and glow-up your hair game in 4 minutes flat!
K18 Leave-In Molecular Hair Mask is a revolutionary 4-minute treatment powered by patented K18PEPTIDE technology that repairs and reverses hair damage caused by bleach, heat, and chemical services. Suitable for all hair types, this vegan, paraben- and silicone-free formula delivers soft, strong, and bouncy hair without rinsing, making it a must-have for professionals seeking fast, lasting hair transformation.













| ASIN | B09HR5KSR8 |
| ASIN | B09HR5KSR8 |
| Age Range Description | Adult |
| Benefits | Reverses damage in 4 minutes |
| Best Sellers Rank | 393 in Beauty ( See Top 100 in Beauty ) 1 in Hair Masks |
| Brand Name | K18 |
| Country Of Origin | USA |
| Country of origin | USA |
| Customer Reviews | 4.2 4.2 out of 5 stars (27,279) |
| Customer reviews | 4.2 4.2 out of 5 stars (27,279) |
| Date First Available | 26 Sept. 2022 |
| Global Trade Identification Number | 00858511001289 |
| Hair Conditioner Type | Deep Hair Conditioner |
| Hair Type | All |
| Item Dimensions | 35 x 35 x 81 millimetres |
| Item Form | Cream |
| Item Weight | 1 Ounces |
| Item model number | K18-31007 |
| Liquid Volume | 15 Cubic Metres |
| Manufacturer | K18 |
| Manufacturer | K18 |
| Material Features | Molecular Repair, Vegan |
| Material Type Free | Free from parabens, silicone, sulfates, alcohol, and artificial dyes |
| Number of Items | 1 |
| Package Type Name | Tube |
| Product Dimensions | 3.48 x 3.48 x 8.08 cm; 28.35 g |
| Product Warranty | 2 year manufacturer |
| Recommended Uses For Product | damaged hair |
| Scent Name | Fresh |
| Special Features | Molecular Repair |
| UPC | 858511001289 746559900490 858511001371 |
| Unit Count | 15.0 millilitre(s) |
K**N
The best!
Regular heat and bleach is used on my hair and was incredibly damaged. This helped to reverse the damage in 6 weeks and I now use it as maintenance once a week. It is very pricey but definitely worth the money if used correctly. Shampoo, towel dry hair, apply and wait 4 minutes minimum then condition as normal. I also use a hair mask after conditioner and my hair has never felt better.
K**E
Great
Really helps damaged or dry hair. Fantastic product
B**L
Expensive but worth it
I have used this once and the difference already is significant. My hair was fried after a disaster with a home colour and then colour correction, my ends were crispy and my hair was looking very sorry for itself. I worried about not conditioning my hair but it didn’t matter as the K18 made it feel fabulous, so soft and smooth. Yes it’s expensive but when the only other option it to cut my long hair off it is worth every penny. Hopefully with more use I will see even more improvement. Yes I definitely recommend this.
M**I
Like magic
Don't think, just buy it. My hair is thick and wavy and is quite damaged due to heat and colouring. I tried Olaplex before but it didn't really helped my hair. K18 worked like magic, I've used it 3 times and my hair just looks and feels healthy! Defo worth the money
S**E
Product packaging
Was really excited for this product as I heard so many good things about it however when I opened it it was damaged and the product had leaked out. Had to throw away as it wasn’t useable. Really upset about this and won’t be buying another one.
C**N
Noticeably stronger hair, but you must use it correctly
I was very curious to try the K18 Leave-In Molecular Hair Mask because my hair has been through a lot: bleach, colour, and heat styling. After a few uses, I can honestly say it does make a difference, but it’s not exactly a miracle in one wash. First, it’s important to follow the instructions: shampoo, skip conditioner, towel-dry your hair, and apply a small amount. You really only need a tiny pump. The product feels light and not greasy, which I like, and it doesn’t weigh my hair down. After about 3–4 uses, my hair started to feel stronger and less brittle, especially on the ends where bleach damage is the worst. It doesn’t make the hair super silky like a traditional mask, but it improves the structure of the hair over time. My hair feels healthier and looks a bit smoother. The downside is the price for such a small bottle. Also, if you’re expecting instant softness like a regular deep conditioner, you might be disappointed because that’s not really what this product is designed to do. Overall, it’s a very interesting treatment for damaged hair and I can see why it’s popular. It takes consistency, but it does help improve the strength of over-processed hair
M**L
Hi quality and does what it says
Fantastic product with the money
K**.
Buy it!
My hair was damaged, dry & dull. It was really affecting me & after spending so much money on products and getting no results this was a final resort. I am so impressed, It has given my hair life again! It’s shiny, sleek & much healthier. I 1000% recommend this product
R**N
Second purchase now, and is impressive when using and left in hair as recommended. Styles well, and leaves hair soft and silky as opposed dry and bushy. However, the next day you would never know, so undecided if would purchase again a third time.
E**N
Leverans som utlovat. Produkten gör mitt silkesmjukt, mycket nöjd än så länge!
I**O
fortalece bastante. com certeza vou comprar de novo.
C**A
Would absolutely recommend to improve hair
Y**H
I can say that this product was good but i think the product was too small for the price.
Trustpilot
2 months ago
1 month ago