---
product_id: 732572929
title: "K18 Hair Mask, Non-Rinsing 1.7 fl oz (50 ml), Biotechnology, Leave In Molecular Repair, For Hair Damage, K18Peptide Biomimetic Hairscience Leave-in Molecular Repair Hair Mask, 1.7 fl oz (50 ml)"
brand: "k18"
price: "¥23540"
currency: JPY
in_stock: true
reviews_count: 6
category: "K18"
url: https://www.desertcart.jp/products/732572929-k18-hair-mask-non-rinsing-1-7-fl-oz-50
store_origin: JP
region: Japan
---

# Leave-in, non-rinsing hydration Patented K18Peptide molecular repair Visible results from first use K18 Hair Mask, Non-Rinsing 1.7 fl oz (50 ml), Biotechnology, Leave In Molecular Repair, For Hair Damage, K18Peptide Biomimetic Hairscience Leave-in Molecular Repair Hair Mask, 1.7 fl oz (50 ml)

**Brand:** k18
**Price:** ¥23540
**Availability:** ✅ In Stock

## Summary

> 🧬 Unlock your hair’s future with science-backed repair!

## Quick Answers

- **What is this?** K18 Hair Mask, Non-Rinsing 1.7 fl oz (50 ml), Biotechnology, Leave In Molecular Repair, For Hair Damage, K18Peptide Biomimetic Hairscience Leave-in Molecular Repair Hair Mask, 1.7 fl oz (50 ml) by k18
- **How much does it cost?** ¥23540 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/732572929-k18-hair-mask-non-rinsing-1-7-fl-oz-50)

## 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

- • **Compact Powerhouse:** Travel-friendly 1.7 fl oz size for on-the-go hair revival
- • **Biotechnology-Driven:** Advanced bioactive peptide formula designed for permanent damage reversal
- • **Deep Molecular Repair:** Rebuilds broken keratin chains from within for lasting hair health
- • **Instant Transformation:** Feel softer, silkier hair immediately after application—no rinse needed
- • **Effortless Styling Boost:** Leaves hair manageable and frizz-free, perfect for busy professionals

## Overview

K18 Hair Mask is a cutting-edge leave-in treatment featuring a patented bioactive peptide that penetrates deep to reconnect broken keratin chains, delivering visible repair and softness from the very first use. Designed for damaged hair caused by heat and styling, this 1.7 fl oz gel formula offers a convenient, non-rinsing solution that fits perfectly into the busy lifestyle of professionals seeking salon-quality results at home.

## Description

Traveling deeper into the inner layers of hair than traditional repair products, our revolutionary patented K18Peptide is just the right size and makeup to fit in and reconnect broken keratin chains.

Review: effective! - I can say that this product was good but i think the product was too small for the price.
Review: 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.

## Features

- It is designed for home treatment to repair damage caused by thermal and mechanical stylin
- A bioactive peptide treatment that rebuilds and permanently repairs damaged hair from the inside ou
- You can feel and see the difference with the first use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0961ZS96M |
| ASIN  | B0961ZS96M |
| Amazon Bestseller | #73,540 in Beauty ( See Top 100 in Beauty ) #340 in Hair Treatment Masks |
| Customer Reviews | 4.3 4.3 out of 5 stars (8,541) |
| Date First Available | March 19, 2012 |
| Date First Available  | March 19, 2012 |
| Hair Type | Damaged |
| Item Form | Gel |
| Item model number  | K18-31005 |
| Product Dimensions | 4.75 x 4.75 x 10.16 cm; 90.72 g |
| Product Dimensions  | 4.75 x 4.75 x 10.16 cm; 90.72 g |
| Scent Name | Suzuran |
| Target Gender | Unisex |

## Product Details

- **Brand:** K18
- **Hair Type:** Damaged
- **Item Form:** Gel
- **Material Feature:** Plant Based
- **Product Benefits:** Damage Control

## Images

![K18 Hair Mask, Non-Rinsing 1.7 fl oz (50 ml), Biotechnology, Leave In Molecular Repair, For Hair Damage, K18Peptide Biomimetic Hairscience Leave-in Molecular Repair Hair Mask, 1.7 fl oz (50 ml) - Image 1](https://m.media-amazon.com/images/I/71wCdxmA9tL.jpg)

## 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

### ⭐⭐⭐⭐ effective!
*by Y***H on April 29, 2023*

I can say that this product was good but i think the product was too small for the price.

### ⭐⭐⭐ Review
*by R***N on May 19, 2025*

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.

### ⭐⭐⭐⭐⭐ Review
*by P***T on July 15, 2025*

This product is actually worth the price. You can see improvement in your hair from the first application and it keeps getting better each time. My hair feels like it used to feel when I was young. Shiny and smooth. Very satisfied. Will buy again.

## 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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**Shop now:** [https://www.desertcart.jp/products/732572929-k18-hair-mask-non-rinsing-1-7-fl-oz-50](https://www.desertcart.jp/products/732572929-k18-hair-mask-non-rinsing-1-7-fl-oz-50)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*