---
product_id: 679235304
title: "System 4 - Hair Thickening System For Damaged Hair with Progressed Thinning - Biotin & Niacinamide - Shampoo, Conditioner, Serum"
brand: "nioxin"
price: "€ 73.36"
currency: EUR
in_stock: true
reviews_count: 13
category: "Nioxin"
url: https://www.desertcart.hr/products/679235304-system-4-hair-thickening-system-for-damaged-hair-with-progressed
store_origin: HR
region: Croatia
---

# Biotin & niacinamide infusion Lightweight hydration boost UV protection shield System 4 - Hair Thickening System For Damaged Hair with Progressed Thinning - Biotin & Niacinamide - Shampoo, Conditioner, Serum

**Brand:** nioxin
**Price:** € 73.36
**Availability:** ✅ In Stock

## Summary

> 🌟 Unlock thicker, fuller hair — because your scalp deserves the VIP treatment!

## Quick Answers

- **What is this?** System 4 - Hair Thickening System For Damaged Hair with Progressed Thinning - Biotin & Niacinamide - Shampoo, Conditioner, Serum by nioxin
- **How much does it cost?** € 73.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/679235304-system-4-hair-thickening-system-for-damaged-hair-with-progressed)

## Best For

- nioxin enthusiasts

## Why This Product

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

## Key Features

- • **UV Defense Formula:** Protects fragile, color-treated hair from sun damage, preserving vibrancy and preventing further breakage.
- • **Revive & Resilience:** Lightweight conditioner that hydrates from root to tip, restoring hair strength and softness without weighing it down.
- • **Scalp Detox & Nourish:** Gentle cleanser removes impurities and sebum buildup, creating the perfect environment for healthy hair growth.
- • **Complete Haircare Ritual:** Use daily with Nioxin System 4 shampoo and serum for a transformative hair thickening experience that commands attention.
- • **Clinically Proven Thickness:** Infused with biotin and niacinamide to visibly increase hair fullness and reduce thinning within 30 days.

## Overview

Nioxin System 4 is a professional-grade hair thickening system designed specifically for dry, damaged, and color-treated hair experiencing progressed thinning. Featuring a lightweight conditioner enriched with biotin, niacinamide, and UV protectants, it strengthens hair resilience, hydrates deeply, and detoxifies the scalp to promote healthier, fuller hair growth. Clinically proven to improve thickness and reduce hair thinning within 30 days, this system is ideal for adults seeking a scientifically backed solution to restore confidence and vitality to their hair.

## Description

Nioxin System 4 Scalp + Hair Conditioner - Hair Thickening Conditioner for Coloured, Dry and Damaged Hair with Progressed Thinning - with Biotin and Niacinamide, 1L : desertcart.co.uk: Beauty

Review: Rescue in a bottle!! - I've given these products a full 2 months before I reviewed. Bottom line is they work. Before: my hair was coloured and long, started thinning after diet and surgery.( I'm an older lady) really dry and thin, tried everything all my usual conditioners nothing worked, I was wearing it up all the time as I could do nothing with it. After: first shampoo, condition and scalp treatment. Hair immediately felt soft and fed.. I only wash my hair twice a week but now it is longer thicker and in good condition, I can use straighteners again. No shedding and my hair is growing back around my hairline. Excellent products. Persevere to see good results 5 stars
Review: Trust the Process. - After 6 months of using the shampoo and conditioner I can honestly see a thicker head of hair and my thinning sides feel and look thicker. I owe my thinning hair to menopause symptoms so if you are going through same - Id recommend. But be patient, You have to trust the process as it does'nt happen overnight. I am 6 months in but saw a difference after 2 months using twice weekly. Only downside I found the serum to be a bit heavy for me but the Shampoo and conditioner are fab.

## Features

- Conditioner: lightweight conditioner to improve hair resilience, hydrate scalp and hair from root to tip; hair treatments for dry damaged hair with progressed thinning
- Biotin hair growth: infused with biotin, niacinamide and UV protecting ingredients; clinically designed to add thickness and fullness
- Scalp treatment: gentle cleanser for scalp; removes impurities and follicle-clogging sebum for healthier hair growth environment
- How to use: rub conditioner from root to ends, leave for 1-3 minutes; use alongside Scalp + Hair Shampoo and Scalp + Hair Thickening Treatment
- Nioxin routine: for best results, use daily with Nioxin System 4 and preferred Nioxin hair styling products; add to your self care regimen or an optimal beauty gift

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D6WJNC8D |
| ASIN  | B0D6WJNC8D |
| Age Range Description | Adult |
| Benefits | Advanced hair treatment for dry damaged hair - added thickness & fullness in 30 days for progressed thinning hair., Nourishes the scalp: infused with nourishing botanicals, antioxidants, and UV protecting ingredients, this kit's Scalp + Hair Thickening Treatment can nourish and revitalise the scalp, improving its overall health and condition., Reduces hair thinning: by strengthening hair resilienc… |
| Best Sellers Rank | 1,148 in Beauty ( See Top 100 in Beauty ) 152 in Hair Conditioners |
| Brand Name | NIOXIN |
| Country Of Origin | USA |
| Country of origin  | USA |
| Customer Reviews | 4.3 4.3 out of 5 stars (746) |
| Customer reviews | 4.3 4.3 out of 5 stars (746) |
| Date First Available  | 28 Aug. 2024 |
| Hair Conditioner Type | Standard Hair Conditioner |
| Hair Type | Aging, Color Treated, Damaged, Dry, Thin |
| Item Dimensions | 7.4 x 8.6 x 27.2 centimetres |
| Item Form | Lotion |
| Item Weight | 1000 Grams |
| Item model number  | 4449 |
| Liquid Volume | 1000 Millilitres |
| Manufacturer | Wella Professionals |
| Manufacturer  | Wella Professionals |
| Material Features | Strengthening, protective |
| Number of Items | 1 |
| Package Type Name | Bottle |
| Product Dimensions  | 7.36 x 8.59 x 27.16 cm; 1 kg |
| Recommended Uses For Product | Hair Care |
| Scent Name | Moss |
| Special Features | Nourishing |
| Unit Count | 1000.0 millilitre |

## Product Details

- **Brand:** NIOXIN
- **Hair type:** Aging, Color Treated, Damaged, Dry, Thin
- **Item form:** Lotion
- **Material feature:** Strengthening, protective

## Images

![System 4 - Hair Thickening System For Damaged Hair with Progressed Thinning - Biotin & Niacinamide - Shampoo, Conditioner, Serum - Image 1](https://m.media-amazon.com/images/I/61qxHvKWWqL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Rescue in a bottle!!
*by C***G on 5 June 2025*

I've given these products a full 2 months before I reviewed. Bottom line is they work. Before: my hair was coloured and long, started thinning after diet and surgery.( I'm an older lady) really dry and thin, tried everything all my usual conditioners nothing worked, I was wearing it up all the time as I could do nothing with it. After: first shampoo, condition and scalp treatment. Hair immediately felt soft and fed.. I only wash my hair twice a week but now it is longer thicker and in good condition, I can use straighteners again. No shedding and my hair is growing back around my hairline. Excellent products. Persevere to see good results 5 stars

### ⭐⭐⭐⭐⭐ Trust the Process.
*by P***S on 15 November 2025*

After 6 months of using the shampoo and conditioner I can honestly see a thicker head of hair and my thinning sides feel and look thicker. I owe my thinning hair to menopause symptoms so if you are going through same - Id recommend. But be patient, You have to trust the process as it does'nt happen overnight. I am 6 months in but saw a difference after 2 months using twice weekly. Only downside I found the serum to be a bit heavy for me but the Shampoo and conditioner are fab.

### ⭐⭐⭐⭐ It works
*by K***K on 21 August 2025*

I wanted to wait until I had finished the bottles before I put my review. I seen lots of negative reviews but I gave it a chance. Firstly it is the best shampoo for getting your hair squeaky clean and the menthol smell is so lovely, my head feels so fresh after each wash and it litera tingles. I did not notice any more hair shedding than I would normally get with each wash. I didn't see any difference for some time but I trusted the process. I had a small balding patch up the front of my head which I could not explain how it happened. After 5 weeks of washing my hair 3 times a week with this treatment I couldn't believe that I started seeing tiny hair growth coming from my bald area. I did combine taking Biotin with the treatment which I feel also boosted it but honestly I am so happy and I will continue to use this product as I can see the difference.

## Frequently Bought Together

- Nioxin System 4 - Hair Thickening System For Damaged Hair with Progressed Thinning - Biotin & Niacinamide - Shampoo, Conditioner, Serum
- Nioxin 3D Intensive Diaboost 100 ml
- NIOXIN Night Density Rescue Intensive Therapy Treatment, 70 ml

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-04-23*