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🧴 Repair at the speed of life—hair like new in 4 minutes!
K18 Leave-In Molecular Hair Mask is a cutting-edge peptide treatment that repairs and restores hair damaged by bleach, color, chemical services, and heat in just 4 minutes. Suitable for all hair types, this vegan, cruelty-free, and silicone-free formula uses patented K18PEPTIDE technology to rebuild hair at the molecular level, delivering soft, strong, and bouncy hair without rinsing. Clinically proven and highly rated, it simplifies your haircare routine while providing lasting damage reversal.

















| ASIN | B0961ZS96M |
| ASIN | B0961ZS96M |
| Age Range Description | Adult |
| Benefits | Clinically proven to repair, restore strength and sustain hair damaged by bleach, color, and chemicals. |
| Best Sellers Rank | 660 in Beauty ( See Top 100 in Beauty ) 1 in Hair Masks |
| Brand Name | K18 |
| Customer Reviews | 4.3 4.3 out of 5 stars (31,094) |
| Customer reviews | 4.3 4.3 out of 5 stars (31,094) |
| Date First Available | 2 May 2021 |
| Global Trade Identification Number | 00858511001128 |
| Hair Conditioner Type | Hair Conditioning Mask |
| Hair Type | All |
| Item Dimensions | 47 x 47 x 102 millimetres |
| Item Form | Cream |
| Item Type Name | Hair Mask |
| Item Weight | 3.2 Ounces |
| Item model number | K18-31005 |
| Liquid Volume | 50 Millilitres |
| Manufacturer | K18 |
| Manufacturer | K18 |
| Manufacturer Part Number | K18-31005 |
| Material Features | Cruelty Free, Natural, Vegan |
| Material Type Free | Silicone Free |
| Model Number | K18-31005 |
| Number of Items | 1 |
| Package Type Name | Bottle |
| Product Dimensions | 4.75 x 4.75 x 10.16 cm; 90.72 g |
| Product Warranty | 2 year manufacturer |
| Recommended Uses For Product | Repair Damaged Hair |
| Scent Name | Fresh |
| Size | 50 ml (Pack of 1) |
| Special Features | Not Tested On Animals |
| UPC | 858511001029 858511001128 729162271362 729162270877 755801147958 726929222179 729162271317 729162271249 729162271096 |
| Unit Count | 50.0 millilitre |
M**S
Very happy with my much improved hair
I have used this product after 4 washes so far and even after the first use my hair looked and felt in much better condition. It now feels smoother and looks so much better. I have tried so many products to help my thinning, fine, frizz prone hair but most just add oil and make my already oily scalp more oily and my hair would look greasy even though just washed. It is expensive but, I have wasted so much money in the past on other recommended products. If this keeps giving these super results I will definitely order again.
S**H
3-4 pumps then rub palms together until cream goes white, then rub onto ends of hair
K18 important thing . 3-4 pumps into palm then rub hands together until cream goes white then rub into ends of hair , I. Been using for two months now I can definatly feel and see the difference in my hair . Shame so expensive , but is very good
S**Y
Tiny but brilliant.
I know it's a little pricey but it has transformed my hair. From dull, frizzy and lifeless to bouncy, full and shiny in around 3 or 4 uses. I have very fine, long hair and it was dry, brittle and lackluster before i tried this product, leave in conditioners left my hair heavy and awful. But this prouct is simple to use, very little goes a long way and i don't need to add any other products at all. It's a little hair miracle in a (very) tiny bottle. I've now ordered the full size and can't wait for it to arrive!
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
A**R
Don't waste your money
Don't waste your money Have used 5 times now to give this product a chance and my hair feels like straw. It's noticeably frizzier and a lot of breakage has occured. It has done nothing it's advertised to do. Very chemical smell and you need to be in a well ventilated room due to the steam and smell that comes off your hair. The only thing that's changed is my bank balance.
K**.
Really improved hair, a little expensive, but last awhile while
Fantastic for improving her health and appearance. It has really reduced my split ends and made my hair feel soft and moisturised. It smells lovely. My only issue is that this does cost a lot for a small size product however you do only need 2 to 3 pumps each use and can use just once a week to get a good result.
S**N
Works well for damaged hair
Was sceptical about this product at first but seen a lot of reviews and recommendations online. My hair was becoming brittle due to health treatments and age, as my hair is long I really didn’t want to cut it all off. After just two applications my hair feels a lot healthier and stronger and I’m not seeing as much hair loss as previous. Would recommend.
M**S
Amazing
So I damaged my hair badly with colour remover and bleach, I was told to put a red on before the brown, you can see how damaged it was, I done some research and tried this product…. It’s saved my hair I used it for just over a week every day you need to follow the instructions no conditioner. And it’s literally saved me from having to cut a massive amount off my hair. I highly recommend this product
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
1 day ago
4 days ago