---
product_id: 404968121
title: "Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz"
brand: "redken"
price: "€ 4.10"
currency: EUR
in_stock: false
url: https://www.desertcart.hr/products/404968121-redken-extreme-length-treatment-mask-rinse-out-hair-mask-biotin
store_origin: HR
region: Croatia
---

# Visible results in just 5 minutes Infused with biotin & castor oil blend Strengthens hair strands by 30% Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz

**Brand:** redken
**Price:** € 4.10
**Availability:** ❌ Out of Stock

## Summary

> 💥 Unlock your hair’s full potential — because strong, long hair waits for no one!

## Quick Answers

- **What is this?** Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz by redken
- **How much does it cost?** € 4.10 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/404968121-redken-extreme-length-treatment-mask-rinse-out-hair-mask-biotin)

## Best For

- redken enthusiasts

## Why This Product

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

## Key Features

- • **Breakage Barrier:** Formulated to reduce hair breakage by reinforcing fragile strands.
- • **Split End Savior:** Visibly minimizes frayed split ends for a polished, professional look.
- • **Lightweight Luxury:** Non-greasy, lightweight formula leaves hair feeling nourished without weighing it down.
- • **Quick 5-Minute Ritual:** Effortless rinse-out treatment fits perfectly into your busy schedule.
- • **Power-Packed Growth Boost:** Biotin and castor oil team up to accelerate hair growth and scalp health.

## Overview

Redken Extreme Length Treatment Mask is a salon-grade, rinse-out hair mask enriched with biotin, niacinamide, and castor oil. Designed specifically for damaged hair, it nourishes the scalp, strengthens hair strands, and reduces split ends, delivering visible results in just 5 minutes. Lightweight and unscented, this 8.5 fl oz treatment is a must-have for professionals seeking longer, stronger hair with minimal effort.

## Description

This 5 minute treatment mask helps to promote a healthy, nourished scalp, strengthen the lengths, and visibly reduce split ends for longer, stronger hair. Powered by Biotin, Niacinamide and Castor Oil.

## Features

- Nourishing, strengthening rinse-out treatment for damaged hair
- Formulated with biotin and castor oil for hair growth
- Prevents breakage for longer, stronger hair
- Nourishes scalp and reduces frayed split ends
- Reduces breakage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MVMN2G8 |
| ASIN  | B09MVMN2G8 |
| Best Sellers Rank | #94,886 in Beauty ( See Top 100 in Beauty ) #961 in Hair Treatment Masks |
| Brand Name | Redken |
| Customer Reviews | 4.7 4.7 out of 5 stars (952) |
| Customer reviews | 4.7 4.7 out of 5 stars (952) |
| Date First Available  | 1 February 2022 |
| Global Trade Identification Number | 00884486491817 |
| Hair Type | Damaged |
| Item Form | liquid-makeups |
| Item model number  | RDKN-P2334900 |
| Manufacturer | AmazonUs/EC6PI |
| Manufacturer  | AmazonUs/EC6PI |
| Manufacturer Part Number | RDKN-P2334900 |
| Material Features | Lightweight |
| Model Number | RDKN-P2334900 |
| Product Benefits | Promotes a healthy, nourished scalp, strengthens hair lengths and visibly reduces split ends for longer, stronger hair. |
| Product Dimensions  | 5 x 7.6 x 21 cm; 260 g |
| Scent Name | Unscented |
| Special Ingredients | Castor Seed Oil, Niacinamide |
| UPC | 884486491817 |
| Unit Count | 8.5 Milliliters |

## Product Details

- **Brand:** Redken
- **Hair type:** Damaged
- **Item form:** liquid-makeups
- **Scent:** Unscented

## Images

![Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz - Image 1](https://m.media-amazon.com/images/I/51AdYvkZI8L.jpg)
![Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz - Image 2](https://m.media-amazon.com/images/I/51C0jOJwksL.jpg)
![Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz - Image 3](https://m.media-amazon.com/images/I/614SZ9CaHeL.jpg)
![Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz - Image 4](https://m.media-amazon.com/images/I/61SVOpA7ccL.jpg)
![Redken Extreme Length Treatment Mask | Rinse-Out Hair Mask with Biotin & Castor Oil | For Hair Growth | 8.5 Fl Oz - Image 5](https://m.media-amazon.com/images/I/61nkC3p3NOL.jpg)

## Questions & Answers

**Q: Who is the Extreme Length System for?**
A: The Extreme Length System is suitable for all hair types, but especially those who wish to focus on length retention. The formula focuses on strengthening hair to prevent breakage for longer-looking hair.

**Q: What is included in the Extreme Length System Shampoo and Conditioner formula?**
A: The Shampoo and Conditioner are formulated using advanced pH Science formulas, with 1% Length Care Complex including Biotin and Castor Oil.

**Q: Does the Extreme Length System help with hair growth?**
A: Extreme Length regimen, infused with Biotin and our Length Care Complex, promotes longer, healthy-looking, strong hair. This system reduces breakage by 92%, allowing hair to reach its maximum length. It does not help grow new hair.

**Q: What is the fragrance of the Extreme Length System?**
A: Top: Strawberry, Cassis, Rhubarb. Mid: Jasmine, Peony, Violet, Muguet, Blackcurrant. Bottom: Raspberry, Vanilla, Sandalwood.

## 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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**Shop now:** [https://www.desertcart.hr/products/404968121-redken-extreme-length-treatment-mask-rinse-out-hair-mask-biotin](https://www.desertcart.hr/products/404968121-redken-extreme-length-treatment-mask-rinse-out-hair-mask-biotin)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-02*