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K18 Leave-In Repair Hair Mask is a revolutionary 4-minute biotech treatment that uses a patented peptide to penetrate and repair hair from within. Designed for all hair types and damage caused by bleach, color, heat, and chemicals, it restores strength, softness, and elasticity without washing away. Cruelty-free and vegan, this salon-quality mask offers lasting results at home, making damaged hair look and feel like new.





| ASIN | B0961ZS96M |
| Active Ingredients | Water (Aqua) (Eau), Alcohol Denat., PropyleneGlycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, BehentrimoniumChloride, Polysorbate 20, sh-Oligopeptide-78, Hydrolyzed Wheat Protein,Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol,Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, HexylCinnamal, Benzyl Alcohol. |
| Additional Features | Not Tested On Animals |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | #290 in Beauty ( See Top 100 in Beauty ) #11 in Hair Treatment Masks |
| Brand | K18 |
| Brand Name | K18 |
| Country of Publication | United States Minor Outlying Islands |
| Customer Reviews | 4.2 out of 5 stars 29,788 Reviews |
| Global Trade Identification Number | 00858511001128 |
| Hair Conditioner Type | Hair Conditioning Mask |
| Hair Type | All |
| Hair type | All |
| Item Dimensions | 47 x 47 x 102 millimeters |
| Item Form | Liquid |
| Item Type Name | Hair Mask |
| Item Weight | 3.2 Ounces |
| Item form | Liquid |
| Liquid Volume | 50 Milliliters |
| Manufacturer | K18 |
| Manufacturer Part Number | K18-31005 |
| Material Features | Cruelty Free, Natural, Vegan |
| Material Type Free | No denatured alcohol |
| Material features | Cruelty Free, Natural, Vegan |
| Model Number | K18-31005 |
| Number of Items | 1 |
| Package Type Name | Jar |
| Product Benefits | "Real, lasting repair powered by K18PEPTIDE™ Hair like new in 4 minutes* Soft, strong, bouncy hair for everyone " |
| Product benefits | "Real, lasting repair powered by K18PEPTIDE™ Hair like new in 4 minutes* Soft, strong, bouncy hair for everyone " Product benefits "Real, lasting repair powered by K18PEPTIDE™ Hair like new in 4 minutes* Soft, strong, bouncy hair for everyone " See more |
| Recommended Uses For Product | Repair Damaged Hair |
| Scent Name | Unscented |
| Size | 50 ml (Pack of 1) |
| Special Ingredients | Cruelty Free |
| UPC | 858511001029 858511001128 729162271362 729162270877 755801147958 726929222179 729162271317 729162271249 729162271096 |
| Unit Count | 50 Milliliters |
S**A
A healthy and high-quality product; I recommend using it at home in a safe and healthy way.
The quantity you pay for at the salon is very economical; it's suitable for more than 5 hair washes and is safe.
S**A
Actually worth the price
Okay, I’ll admit it, I was skeptical. A tiny 15ml bottle promising to reverse years of hair damage? For that price? Felt like one of those “trust me bro” moments. But hear me out: this little tube is magic in disguise. First of all, it’s not your typical slap-it-on-and-rinse-it-out hair mask. Nope. K18 is a leave-in treatment, and you only need a pea-sized amount (seriously, don’t get greedy). After shampooing (no conditioner!), towel-dry your hair, apply evenly from mid-length to ends, wait 4 minutes for the science-y peptides to do their thing, and then style like usual. No rinsing. I used K18 for four to six washes in a row. And then switch to maintenance mode and use as needed. Here’s the part that made me do a double take: after just one use, my hair felt smoother, bouncier, and somehow healthier. Like, salon-visit-level healthier. It’s like it filled in the emotional damage too. Yes, it’s on the pricier side, especially for just 15ml. But here’s the deal: it’s packed with patented tech that actually repairs hair from the inside out (not just coating it with silicones). So you’re paying for results, not just fancy packaging. And since you don’t need much, this little tube goes a long way. Final verdict? If your hair’s been through bleach, heat, or a rough breakup? it deserves this.
N**A
Good
Good
D**Y
Unuseful
Over priced for nothing
S**B
Nice one
Nice one
K**A
Good
Good but I m not sure this have effect
A**L
First use and really impressive results.
You hear of miracle products that go viral and they always dissapoint. Not the case here. I bought the 50ml bottle, great price in the UAE by the way. I washed my brittle, multiple times bleached medium fine hair with a purifying shampoo first. Litterally a rats nest after towel drying. Without conditioner I needed to be extremely careful and patient brushing out the tangled mess. I used 2 pumps. One on each side of my head. Each pump I rubbed gently between my hands and then spread the coating on my hands from tip to root, scrunching as I went. Withing 4 minutes my hair was taking on my natural curl. I am astounded at the softness of my hair at this point. After blowdrying my hair it's ridiculously shinny and soft and all the frizz and broken ends are at least 75% less than begore adding K18. I will keep using this until I see the full result, but as everyone keeps saying, less really is more. 2 pumps and I am very pleased so far and its only the first treatment.
M**I
رائع
رائع
A**R
Buen producto
Muy bien
C**N
Cumple las expectativas
Tenía dudas por algunos comentarios que había leído sobre que no era para tanto, pero realmente puedo decir que funciona desde el primer uso. Mi pelo está decolorado, además llevo peinado bob, por lo que suelo peinar con calor y está rompiéndose. Aposté por este producto por su fama y puedo decir que desde el primer lavado se siente el pelo con más peso y menos fragilidad. Evidentemente si buscáis que solucione la rotura, seamos realistas, ningún producto lo hará. Si quieres mejorar la calidad de tu pelo y recuperar parte del daño, pruébalo. Es caro sí, pero los buenos productos lo son. No se necesita aplicar demasiado producto como cualquier producto de calidad.
C**U
It's nice
I didn't use it that much but my hair is good
I**O
perfeito.
fortalece bastante. com certeza vou comprar de novo.
C**A
Yes!
Would absolutely recommend to improve hair
Trustpilot
2 weeks ago
5 days ago