---
product_id: 328478736
title: "Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat"
brand: "k18"
price: "$156"
currency: NZD
in_stock: true
reviews_count: 11
category: "K18"
url: https://www.desertcart.nz/products/328478736-leave-in-molecular-repair-hair-mask-patented-lasting-repair-dry
store_origin: NZ
region: New Zealand
---

# 4-minute fast repair Leave-in hydration & strength Patented K18Peptide tech Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat

**Brand:** k18
**Price:** $156
**Availability:** ✅ In Stock

## Summary

> 🧬 Unlock your hair’s DNA for next-level strength and shine!

## Quick Answers

- **What is this?** Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat by k18
- **How much does it cost?** $156 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/328478736-leave-in-molecular-repair-hair-mask-patented-lasting-repair-dry)

## Best For

- k18 enthusiasts

## Why This Product

- Trusted k18 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Impact:** Visible improvements from first use, with effects that endure wash after wash.
- • **Leave-In Convenience:** No rinsing needed—apply, wait, and style for effortless salon-quality results at home.
- • **Universal Hair Renewal:** Works on all hair types and damage levels—color, bleach, heat, and chemical treated.
- • **Biotech-Powered Strength:** Patented K18Peptide penetrates deep to reconnect broken keratin chains for lasting resilience.
- • **Instant Molecular Repair:** Transforms damaged hair in just 4 minutes, saving your precious time.

## Overview

K18 Leave-In Molecular Hair Mask is a revolutionary biotech treatment that repairs extreme hair damage from bleach, color, heat, and chemicals in just 4 minutes. Infused with the patented K18Peptide, it penetrates deep to reconnect broken keratin chains, restoring hair’s natural strength, softness, and bounce. Suitable for all hair types, this leave-in formula delivers lasting results without rinsing, making it a must-have for professionals and trendsetters seeking salon-grade repair at home.

## Description

desertcart.com: K18 Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat : Beauty & Personal Care

Review: OMG! OMG ! OMG! K-18 FULFILLS ITS CLAIMS Read on! - I’m over 55 and have spent decades trying everything — from $9 to $144 per product — hoping for softer, healthier hair. I have 3a curls hidden under years of color, heat damage, and dryness. My hair would break and frizz so badly it looked like I had layers (I don’t). K18 is the first and only product that actually delivered on its promise to repair — not just coat — my hair. I was fully prepared to return this if it did not make a difference. It did. This isn’t a conditioner or mask. K18 uses a patented technology that works from the inside out. I used a clarifying shampoo, applied 6 pumps (very small pumps from the "try it" bottle!), finger-raked it through damp hair, waited 4 minutes, and then combed through. No rinsing, no other products. I let my hair air-dry, and it already felt softer and smoother with significantly less frizz. No fragrance -makes me happy. Important note: You do not need to rub this aggressively between your palms to "activate" it — that’s a common myth. Just rub your palms lightly so you can apply it evenly and let the science do the work. It works on the keratin molecules to repair your hair from the inside out. Friction is not going to make the molecules smaller. Don't know why people start these rumors. The next morning, I used my straightener on medium heat and was stunned. Instead of the usual dry straw, my hair was sleek, shiny, and bouncy. Even the ends curled beautifully — something I’ve never seen on my hair before. After four treatments, my hair now feels different, although the greatest results came after the very first use. My hair is softer, smoother, more manageable, with less frizz and more shine. Even in Florida’s 90°+ heat and humidity, it holds up — and I’m not using anything else but K18. A friend even asked to try it after seeing my results. It’s expensive, but absolutely worth it. I’ve already bought the larger bottle. I’m sticking with K18 — this changed everything for me. And to address the expense, the 50mL pump provides 50 pumps. That's 25 applications for me. My average thickness, long hair uses 2 full regular pumps. After the first 4 applications, you move to every 4 washes. That means after the first four treatments, I have 21 treatments more still in the pump bottle. For me, with super dry hair, that means it will last another 18-21 weeks since I only wash once a week, and an occasional "extra". I am going to guess I have taken at least $100 of products that did not work for me to the women's shelter over that time, meaning the waste was as much as this effective product that takes no time to use, packs easily in a suitcase, doesn't stink and IT WORKS! If you have super straight, silky hair, like Asian hair, or other non-porous hair, I do not think you are going to get the same results. You probably already have the kind of hair those of us with porous, damaged hair are looking for. Ask ChatGPT
Review: This Product is Worth The Cost - This product is pricey but the results are worth it. I have continued to repurchase this product as nothing else makes my hair stronger and healthier looking than when I use K19. Stop wasting your money on less priced items that don’t work like K19.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0961ZS96M |
| Best Sellers Rank | #142 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #1 in Hair Treatment Masks |
| Customer Reviews | 4.3 4.3 out of 5 stars (27,412) |
| Item model number  | K18-31005 |
| Manufacturer  | K18 |
| Product Dimensions  | 1.87 x 1.87 x 4 inches; 3.2 ounces |
| UPC  | 858511001029 858511001128 729162271362 729162270877 755801147958 726929222179 729162271317 729162271249 729162271096 |

## Product Details

- **Brand:** K18
- **Hair Type:** Damaged
- **Item Form:** Cream
- **Material Feature:** Natural

## Images

![Leave-In Molecular Repair Hair Mask, Patented, Lasting Repair For Dry, Frizzy, Damaged Hair, Reverse Damage In 4 Minutes From Bleach, Color, Chemical Services + Heat - Image 1](https://m.media-amazon.com/images/I/71wCdxmA9tL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How does the K18 mask work?**
A: The K18 Mask works as a treatment to reverse damage in 4 minutes. It’s powered by our biomimetic K18PEPTIDE to seamlessly fit in and reconnect broken polypeptide chains at the molecular level.

**Q: What is the K18PEPTIDE?**
A: K18PEPTIDE is a biotech-developed peptide that mimics hair’s structure to reverse damage by reconnecting polypeptide chains and disulfide bonds broken during damage from bleach + color, chemical services, and heat.

**Q: Why skip conditioner?**
A: Conditioner leaves a film that blocks our peptide from penetrating effectively. Once the 4-minute wait time is up, feel free to use a conditioner, a leave-in, or any type of product.

**Q: I noticed there’s alcohol in the formula, isn’t that bad for you?**
A: We like to keep our formulas minimal, only using the exact amount of ingredients needed to get the peptide where it needs to go. Here the alcohol serves as an agent to optimize the hair environment for the K18 Mask to work on a deeper level.

**Q: When should I expect to see results?**
A: Most see results after 2-3 uses. The more damaged the hair, the more dramatic the results so it may vary depending on your hair type and level of damage.

## Customer Reviews

### ⭐⭐⭐⭐⭐ OMG! OMG ! OMG! K-18 FULFILLS ITS CLAIMS Read on!
*by G***G on June 25, 2025*

I’m over 55 and have spent decades trying everything — from $9 to $144 per product — hoping for softer, healthier hair. I have 3a curls hidden under years of color, heat damage, and dryness. My hair would break and frizz so badly it looked like I had layers (I don’t). K18 is the first and only product that actually delivered on its promise to repair — not just coat — my hair. I was fully prepared to return this if it did not make a difference. It did. This isn’t a conditioner or mask. K18 uses a patented technology that works from the inside out. I used a clarifying shampoo, applied 6 pumps (very small pumps from the "try it" bottle!), finger-raked it through damp hair, waited 4 minutes, and then combed through. No rinsing, no other products. I let my hair air-dry, and it already felt softer and smoother with significantly less frizz. No fragrance -makes me happy. Important note: You do not need to rub this aggressively between your palms to "activate" it — that’s a common myth. Just rub your palms lightly so you can apply it evenly and let the science do the work. It works on the keratin molecules to repair your hair from the inside out. Friction is not going to make the molecules smaller. Don't know why people start these rumors. The next morning, I used my straightener on medium heat and was stunned. Instead of the usual dry straw, my hair was sleek, shiny, and bouncy. Even the ends curled beautifully — something I’ve never seen on my hair before. After four treatments, my hair now feels different, although the greatest results came after the very first use. My hair is softer, smoother, more manageable, with less frizz and more shine. Even in Florida’s 90°+ heat and humidity, it holds up — and I’m not using anything else but K18. A friend even asked to try it after seeing my results. It’s expensive, but absolutely worth it. I’ve already bought the larger bottle. I’m sticking with K18 — this changed everything for me. And to address the expense, the 50mL pump provides 50 pumps. That's 25 applications for me. My average thickness, long hair uses 2 full regular pumps. After the first 4 applications, you move to every 4 washes. That means after the first four treatments, I have 21 treatments more still in the pump bottle. For me, with super dry hair, that means it will last another 18-21 weeks since I only wash once a week, and an occasional "extra". I am going to guess I have taken at least $100 of products that did not work for me to the women's shelter over that time, meaning the waste was as much as this effective product that takes no time to use, packs easily in a suitcase, doesn't stink and IT WORKS! If you have super straight, silky hair, like Asian hair, or other non-porous hair, I do not think you are going to get the same results. You probably already have the kind of hair those of us with porous, damaged hair are looking for. Ask ChatGPT

### ⭐⭐⭐⭐⭐ This Product is Worth The Cost
*by K***R on January 26, 2026*

This product is pricey but the results are worth it. I have continued to repurchase this product as nothing else makes my hair stronger and healthier looking than when I use K19. Stop wasting your money on less priced items that don’t work like K19.

### ⭐⭐⭐⭐⭐ Best hair product ever hands down
*by J***S on January 20, 2026*

My hair was looking pretty crappy. I remembered I ran out of this product. Got it again and within 2 uses my hair is back looking decent. I have incredibly fine hair and this does not weight it down, indeed it actually gives my hair body and makes it soft. It is easy to use. I think everyone should try it. Smells good too. Honestly, every k18 product I have tried it next level amazing.

## Frequently Bought Together

- K18 Leave-In Molecular Hair Mask, Repairs Dry or Damaged Hair, Reverse Hair Damage from Bleach, Color, Chemical Services & Heat
- K18 Damage Shield Protective Conditioner, Protects Hair from Daily Damage, Improves Strength & Shine, 8.5 Fl Oz
- K18 Damage Shield Protective Shampoo, Reduces Frizziness & Tangles, Maintains Hair Health, 8.5 Fl Oz

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-19*