---
product_id: 590891895
title: "REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml"
brand: "redken"
price: "$93"
currency: NZD
in_stock: false
reviews_count: 5
url: https://www.desertcart.nz/products/590891895-redken-hair-treatment-mask-biotin-and-castor-seed-oil-longer
store_origin: NZ
region: New Zealand
---

# REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml

**Brand:** redken
**Price:** $93
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml by redken
- **How much does it cost?** $93 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/590891895-redken-hair-treatment-mask-biotin-and-castor-seed-oil-longer)

## Best For

- redken enthusiasts

## Why This Product

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

## Description

Find the biggest selection of products from Redken. Shop online for fragrances, make-up and cosmetics, skin care, nail care, male grooming and more at desertcart.co.uk.

Review: I've been trying to go the natural hair routine for 2 years since it seemed my hair has been struggling with length. I finally saw this product and thought "why not" since seeking to find what is best for me has been a journey for all aspects of myself. Just to let you know I only use this product once a week. I will explain: My shower routine is that I exfoliate my scalp with a salt scrub, wash with shampoo and then use the REDKEN mask and message it into my scalp for the instructed time and then rinse off with cold water. Then I used the REDKEN leave on conditioner and let my hair air dry....and I would say these two products had made my hair feel more healthy then the all natural hair routine I've been using. Yes, maybe 'all natural' works for some, but these two additions to my hair routine had relieved my hair of past issues ive been struggling with. It was always dry, and flaky the next day or within hours after a wash. I was trying to do less hair washes, but it was difficult due to how embarrassingly flaky and oily my hair got after one day. Adding the REDKEN Extreme Length Mask and leave in conditioner to my routine had allowed my hair to last a week till it showed signs of oiliness and flaking which lead me to believe I didn't have dandruff but my scalp was just overly dry from these so called 'natural' hair products. REDKEN had helped in maintaining the moisture in my hair which helped my scalp from over producing oils that ended up making it look so greasy looking and flaky. I only use it once a week and in that week my hair feels silky, soft and healthy. I feel like a model flipping my hair around its ridiculous! I have only used this product twice, as I said I've been only using it once a week. so I can't really say if it had helped my hair with growing more length. but i had done my share of research that states that when issues with hair not growing past a certain length it could be due to hair damage (or split end) causing the hair to break not allowing it to lengthen. If these products can maintain the moisture in my hair for a week, then I would confidently say that if I continue to use these products my hair strans will grow more stronger and hydrated that my ends will not be so easily broken. This is my theory after all on how this product line is intended to work. I will update this review if that is the case!
Review: I like the smell. And how it feel on my head. You can actually feel it working.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B09MVMN2G8 |
| Best Sellers Rank | 310,767 in Beauty ( See Top 100 in Beauty ) 2,939 in Hair Deep Conditioners & Treatments |
| Customer reviews | 4.6 4.6 out of 5 stars (880) |
| Date First Available  | 16 May 2022 |
| Item model number  | RDKN-P2334900 |
| Manufacturer  | Redken |
| Product Dimensions  | 5 x 7.6 x 21 cm; 260 g |

## Product Details

- **Brand:** Redken
- **Hair type:** Damaged
- **Item form:** Liquid
- **Material feature:** Strengthening

## Images

![REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml - Image 1](https://m.media-amazon.com/images/I/3131XbZKt2L.jpg)
![REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml - Image 2](https://m.media-amazon.com/images/I/31YXwj6ajdL.jpg)
![REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml - Image 3](https://m.media-amazon.com/images/I/41YHI1LDtLL.jpg)
![REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml - Image 4](https://m.media-amazon.com/images/I/41aOuIRn7LL.jpg)
![REDKEN Hair Treatment Mask, Biotin & Castor Seed Oil, For Longer, Stronger Hair, Extreme Length, 250 ml - Image 5](https://m.media-amazon.com/images/I/41pg+qJwyvL.jpg)

## Questions & Answers

**Q: What is the main ingredient in Extreme Length?**
A: All Extreme Length products are infused with biotin as part of its Length Care Complex for longer, stronger hair.

**Q: How does Extreme Length help hair grow longer?**
A: Using the full system reduces breakage by up to 81%*, helping you achieve maximum hair length.

**Q: What is the difference between the Extreme ranges?**
A: Extreme is the professional solution for damaged hair. Extreme Length helps to fortify lengths for 81% less breakage to help grow hair longer, when used as a system. Extreme Bleach Recovery helps restore a healthy touch between lightening services.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***Y on 13 April 2023*

I've been trying to go the natural hair routine for 2 years since it seemed my hair has been struggling with length. I finally saw this product and thought "why not" since seeking to find what is best for me has been a journey for all aspects of myself. Just to let you know I only use this product once a week. I will explain: My shower routine is that I exfoliate my scalp with a salt scrub, wash with shampoo and then use the REDKEN mask and message it into my scalp for the instructed time and then rinse off with cold water. Then I used the REDKEN leave on conditioner and let my hair air dry....and I would say these two products had made my hair feel more healthy then the all natural hair routine I've been using. Yes, maybe 'all natural' works for some, but these two additions to my hair routine had relieved my hair of past issues ive been struggling with. It was always dry, and flaky the next day or within hours after a wash. I was trying to do less hair washes, but it was difficult due to how embarrassingly flaky and oily my hair got after one day. Adding the REDKEN Extreme Length Mask and leave in conditioner to my routine had allowed my hair to last a week till it showed signs of oiliness and flaking which lead me to believe I didn't have dandruff but my scalp was just overly dry from these so called 'natural' hair products. REDKEN had helped in maintaining the moisture in my hair which helped my scalp from over producing oils that ended up making it look so greasy looking and flaky. I only use it once a week and in that week my hair feels silky, soft and healthy. I feel like a model flipping my hair around its ridiculous! I have only used this product twice, as I said I've been only using it once a week. so I can't really say if it had helped my hair with growing more length. but i had done my share of research that states that when issues with hair not growing past a certain length it could be due to hair damage (or split end) causing the hair to break not allowing it to lengthen. If these products can maintain the moisture in my hair for a week, then I would confidently say that if I continue to use these products my hair strans will grow more stronger and hydrated that my ends will not be so easily broken. This is my theory after all on how this product line is intended to work. I will update this review if that is the case!

### ⭐⭐⭐⭐⭐ Review
*by Z***I on 2 December 2025*

I like the smell. And how it feel on my head. You can actually feel it working.

### ⭐⭐⭐⭐⭐ Review
*by R***A on 15 October 2025*

Essa mas cara é maravilhosa. Trata o couro cabeludo e o cabelo fica uma seda. Pena que é cara

## Frequently Bought Together

- Redken Redken Extreme Length Triple Action Treatment Mask, Rinse-Out Mask With Biotin & Niacinamide
- Redken Extreme Hair Mask For Damanged, Brittle Hair - Fortifies & Strengthens
- Redken One United All-In-One Leave In Conditioner - Multi-Benefit Treatment For All Hair Types, Heat Protectant Spray, Paraben-Free

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---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-18*