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🧪 Unlock your hair’s DNA for next-level strength and shine!
K18 Leave-In Molecular Repair Hair Mask is a revolutionary 4-minute biotech treatment that renews chemically damaged hair from the inside out. Powered by the patented K18Peptide, it penetrates deep to reconnect broken polypeptide chains, restoring strength, softness, and elasticity for all hair types. This cruelty-free, vegan formula delivers lasting repair that won’t wash away, making it the go-to solution for millennials seeking salon-quality results at home.





| ASIN | B0961ZS96M |
| 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 |
| Best Sellers Rank | #276 in Beauty ( See Top 100 in Beauty ) #16 in Hair Treatment Masks |
| Brand Name | K18 |
| Country of Publication | United States Minor Outlying Islands |
| Country of origin | United States Minor Outlying Islands |
| Customer Reviews | 4.1 4.1 out of 5 stars (31,011) |
| Customer reviews | 4.1 4.1 out of 5 stars (31,011) |
| Date First Available | 9 June 2021 |
| Global Trade Identification Number | 00858511001128 |
| Hair Conditioner Type | Hair Conditioning Mask |
| 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 model number | K18-31005 |
| Liquid Volume | 50 Milliliters |
| Manufacturer | K18 |
| Manufacturer | K18 |
| Manufacturer Part Number | K18-31005 |
| Material Features | Cruelty Free, Natural, Vegan |
| Material Type Free | No denatured alcohol |
| 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 Dimensions | 4.75 x 4.75 x 10.16 cm; 90.72 g |
| Recommended Uses For Product | Repair Damaged Hair |
| Scent Name | Fresh |
| Size | 50 ml (Pack of 1) |
| Special Ingredients | Cruelty Free |
| UPC | 858511001029 858511001128 729162271362 729162270877 755801147958 726929222179 729162271317 729162271249 729162271096 |
| Unit Count | 50 Milliliters |
Z**U
Absolutely amazing
Love this! My hair had gone really frizzy and the baby stood up in the morning. The texture has changed completely after using this. Didn’t straighten the hair but my hair is really thick. It just feels a lot smoother. Also once I blow dry or curl my hair, they look good where before I had baby hair sticking up all over the head.
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.
س**و
S
مش اصلي وحجمه صغير ول سعر مبالغ فيه ولا شفت اي نتيجه
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.
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.
S**S
Real
It’s a real product but I feel like it did nothing for my hair 🤔🤔
S**B
Nice one
Nice one
F**I
Amazing
I’ve tried in the salon and finally I bought it recommended by 3 hairdressers is really helpful and soft makes your hair soft for long time and clean from the first time yeah, is small and little for the amount it worth it if you really wanna fix your blitch hair (in my case)
C**P
Extremely expensive but it actually does what it claims
Extremely pricey stuff but it actually works long term on my severely damaged, spongy-when-wet, straw-hay-when-dry peroxide blonde hair. I have noticed that with continued use my hair looks and feels smoother with less tearing and breakage.
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.
I**O
perfeito.
fortalece bastante. com certeza vou comprar de novo.
M**G
Fantastiskt
Helt fantastisk resultat redan efter första behandlingen. Så bra för mitt hår som tagit en del stryk av färgbehandlingar. Kommer verkligen att fortsätta med det här.
Y**H
effective!
I can say that this product was good but i think the product was too small for the price.
Trustpilot
2 weeks ago
3 weeks ago