---
product_id: 366911550
title: "K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M"
brand: "k18"
price: "€ 2.98"
currency: EUR
in_stock: false
reviews_count: 7
url: https://www.desertcart.pt/products/366911550-k18-leave-in-repair-hair-mask-treatment-to-repair-dry
store_origin: PT
region: Portugal
---

# K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M

**Brand:** k18
**Price:** € 2.98
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M by k18
- **How much does it cost?** € 2.98 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/366911550-k18-leave-in-repair-hair-mask-treatment-to-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

## Description

Full description not available

## Product Details

- **Brand:** K18
- **Item Form:** Cream
- **Material Feature:** Natural
- **Hair Type:** Damaged,All,Chemically Treated,Frizzy
- **Product Benefits:** Renews extreme damadged hair caused by bleach and color

## Images

![K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M - Image 1](https://m.media-amazon.com/images/I/71M1X--Z2hS.jpg)
![K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M - Image 2](https://m.media-amazon.com/images/I/61K6KSN+LZL.jpg)
![K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M - Image 3](https://m.media-amazon.com/images/I/81YZVqn0AML.jpg)
![K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M - Image 4](https://m.media-amazon.com/images/I/61jy4AYgOrL.jpg)
![K18 Leave-In Repair Hair Mask Treatment to Repair Dry or Damaged Hair - 4 M - Image 5](https://m.media-amazon.com/images/I/61eNUjWIhPS.jpg)

## Questions & Answers

**Q: Is the mask a single application in the tube?**
A: When you use K18 mask you only use 1-3ml per treatment so most get 2-3 uses.

**Q: Does this product contain sulfates?**
A: Hi There!   K18 is free of Parabens; Sulfates, Silicones, Phthalates, Sodium Chloride, Artificial Colors Formaldehyde and Formaldehyde Donors.  Hope this answers your question!

**Q: How often should this be used?**
A: We recommend starting with the "repair phase" and using K18 4-6 times in a row. Then once your hair is feeling improved you can switch to the "maintenance phase" and use K18 every 3-4 shampoos. If you love the way K18 makes your hair feel you can use it every shampoo if you wish!

**Q: Should I use this before or after applying Demi permanent hair dye?**
A: Hi There!  If you are only using the mask, you would use it after the Demi Permanent Dye. Apply your color, process, shampoo, skip conditioner, towel dry, add the mask, wait 4 mins and style as usual.  Hope this answers your question.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by J***E on November 8, 2024*

The price is steep but it is a great product, worked wonders for mu chemically treated hair. It brought back the softness and looks much healthier. Also liked that it works after 4 minutes unlike other products that require much longer to work

### ⭐⭐⭐⭐⭐ Shining, manageable hair at 73 - works for me!
*by S***A on October 5, 2021*

I have fine, thinning stubbornly straight hair that I color at home every 6-8 weeks using eSalon products. I noticed my hair was looking a little dull and the hair masques I had on hand didn't provide lasting results. I heard about K18 from Jack Martin, the hair coloring genius who does those gorgeous 8-hr gray hair transitions (Instagram). I bought the sample size (5 ml) and got 2 applications out of it, using a little more than a nickel-size dollop the first application and the remainder the 2nd application. The first application yielded noticeably improved hair shine and manageability and did not weigh my hair down. I saved the 2nd application to use a week later when we were scheduled for a family photo session. I had my chin-length bob trimmed 2 days before the session and the hairdresser told me I should stop using my Hot Tools Professional one step dryer volumizer (which I love and only use on medium heat) and go back to 2-handed blow drying with a round brush (which I find awkward and tiring) in order to get the lift and bend I wanted in my hair. He was wrong. I applied the last of the K18 through my turbie towel blotted hair and waited 4-5 minutes before spraying a little root lift around the top and crown areas and working a blend of 2 styling products through to the ends (the hairdresser was right about those). I used a regular blow dryer with a concentrator attachment to get the roots dry as I lifted and over-directed sections of hair, then sectioned my slightly damp hair and switched to my Hot Tools volumizer. My hair was way more manageable and very shiny. I had no trouble getting the desired bend with one or 2 pulls through, holding the wrap for a few seconds and then allowing a little cooling time. I was able to arrange the front and top of my hair into the casual look I wanted with my hands and sprayed some quick-drying hair spray lightly under the side sections and around the top and crown. I couldn't believe how good it looked. During the late afternoon shoot by the lake, the wind picked up and blew my hair around a bit. I actually loved the feel of it. Afterwards, I still had style and shine. I'm now investing in the large (50 ml) size.

### ⭐⭐⭐⭐ Overall, great product despite the high cost.
*by S***A on March 31, 2023*

This product is very concentrated, so it does not take much to work into hair. I have long hair nearly down to my belly button. It was so easy to use and made my hair feel much softer and less frizzy for a couple of day. Needing to apply this a couple times a week could be very costly depending on your length but if you invest $$ into your hair, it is a great staple to put in your routine.

## Frequently Bought Together

- K18 Biomimetic Hairscience Leave-In Molecular Repair Hair Mask, 5 ml
- Olaplex No. 3 Hair Perfector Repairing Hair Treatment, Concentrated for Dry Damaged Hair, Repairs & Strengthens All Hair Types, 100ml

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**Shop now:** [https://www.desertcart.pt/products/366911550-k18-leave-in-repair-hair-mask-treatment-to-repair-dry](https://www.desertcart.pt/products/366911550-k18-leave-in-repair-hair-mask-treatment-to-repair-dry)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-24*