---
product_id: 656422641
title: "System 4 - Hair Thickening System For Damaged Hair with Progressed Thinning - Biotin & Niacinamide - Shampoo, Conditioner, Serum"
brand: "nioxin"
price: "$74.48"
currency: USD
in_stock: true
reviews_count: 8
category: "Nioxin"
url: https://www.desertcart.us/products/656422641-system-4-hair-thickening-system-for-damaged-hair-with-progressed
store_origin: US
region: United States of America
---

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

**Brand:** nioxin
**Price:** $74.48
**Availability:** ✅ In Stock

## Summary

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

## 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?** $74.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/656422641-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

- • **Scalp Detox for Growth:** Gentle cleanser removes impurities and sebum buildup, creating the ideal environment for healthier hair growth.
- • **Daily Ritual, Lasting Results:** Use consistently with Nioxin System 4 shampoo and serum to transform thinning hair into thicker, fuller locks.
- • **Resilient Roots, Fuller Strands:** Lightweight conditioner that hydrates and strengthens from root to tip, perfect for dry, damaged hair with thinning.
- • **Clinically Proven Thickening Power:** Infused with biotin, niacinamide, and caffeine to stimulate follicles and visibly increase hair density.
- • **Professional Grade, At-Home Luxury:** Trusted by experts, this system elevates your self-care routine and makes a perfect gift for anyone serious about hair health.

## Overview

Nioxin System 4 is a professional-grade hair thickening system designed specifically for dry, damaged, and coloured hair experiencing progressed thinning. Featuring a lightweight conditioner enriched with biotin, niacinamide, and UV protectants, it hydrates and strengthens hair from root to tip while detoxifying the scalp to promote a healthier growth environment. Clinically tested and recommended for daily use alongside its shampoo and serum, this system delivers visible improvements in hair density and resilience, making it a must-have for anyone committed to reversing thinning and enhancing hair fullness.

## Description

Product Description "We are Nioxin, the #1 Professional hair care brand for thicker, fuller hair. We are pioneers of a hair movement that's never going to stop. Built on clinically proven solutions, we turn scalp science into gentle scalp care and hair thickening products - because everyone deserves to grow thicker, fuller hair they can see and feel. Nioxin Pro Clinical's System Kit 4 is a deep conditioning hair treatment designed for dry, damaged, coloured hair with progressed thinning. This lightweight conditioner helps provide hair resilience, hydrates the scalp and hair from root to tip. Clinically and dermatologically tested. This professional hair care is formulated with a powerful blend of niacinamide, biotin and caffeine to help nourish the hair root, stimulate hair follicles and strengthen the hair. Nioxin System 4 Conditioner enhances scalp health by promoting a healthy environment for hair growth. Its lightweight, moisturising formula contains ingredients that strengthen the hair against damage and breakage, while promoting a healthier scalp. To use, apply a small amount of conditioner to wet hair after shampooing. Gently massage into the scalp and hair, focusing on areas of concern. Leave on for 1-3 minutes, then rinse thoroughly. For best results, use daily alongside the Nioxin System 4 Scalp + Hair Shampoo and Scalp + Hair Thickening Treatment. For optimal results, use the Nioxin System Kit 4 daily. Add to your self care regimen & pair with Nioxin Hair Mousse, Hairspray or other styling products. Give Nioxin Scalp + Hair Thickening System as the perfect beauty gift. " Ingredients Aqua/Water/Eau, Cetyl Alcohol, Stearamidopropyl Dimethylamine, Stearyl Alcohol, Distearyldimonium Chloride, Phenoxyethanol, Benzyl Alcohol, Cetearyl Alcohol, Hydroxypropyl Guar, Glyceryl Stearate, Oleyl Alcohol, Mentha Piperita (Peppermint) Oil, Mentha Arvensis Leaf Oil, Propylparaben, Polysorbate 60, Propylene Glycol, Methylparaben, EDTA, Hydroxyethylcellulose, Citric Acid, Quaternium-80, Limonene, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Tocopheryl Acetate, Lecithin, Biotin, Panthenol, Niacinamide, Foeniculum Vulgare (Fennel) Fruit Extract, Disodium Phosphate, Acer Saccharum (Sugar Maple) Extract, Vaccinium Myrtillus Leaf Extract, Citrus Limon (Lemon) Peel Extract, Saccharum Officinarum/Sugar Cane Extract/Extrait de canne à sucre, Faex Extract/Yeast Extract/Extrait de levure, Sodium Phosphate, Citrus Aurantium Dulcis (Orange) Fruit Extract, Maltodextrin, Blue 1 (CI 42090), Potassium Sorbate, Sodium Benzoate, Ethylparaben, Butylparaben Directions After shampooing, apply to damp hair, massage into scalp, let it sit for a few minutes, then rinse thoroughly. Safety Warning CAUTION: Do not get into the eyes. Keep out of reach of children. For any questions or concerns about side effects, always consult a medical professional.

Review: Great system - Great hairloss System. Really noticed the difference with in 2 weeks of using. Smels great and goes along way. My hair feels soft clean and very noticeable decrease in shedding
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 & hair from root to tip - hair treatments for dry damaged hair with progressed thinning
- BIOTIN HAIR GROWTH: Infused with biotin, niacinamide & UV protecting ingredients - clinically designed to add thickness & fullness
- SCALP TREATMENT: Gentle cleanser for scalp - removes impurities & 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 & Scalp + Hair Thickening Treatment
- NIOXIN ROUTINE: For best results, use daily with Nioxin System 4 & preferred Nioxin hair styling products - add to your self care regimen or a perfect beauty gift

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DFCM76HJ |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | 788 in Beauty ( See Top 100 in Beauty ) 139 in Hair Conditioners |
| Brand | NIOXIN |
| Brand Name | NIOXIN |
| Country Of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 659 Reviews |
| Hair Type | Ageing, Damaged, Thinning, coloured, dry |
| Item Form | Conditioner |
| Item Weight | 338 Grams |
| Item form | Conditioner |
| Item weight | 338 Grams |
| Manufacturer | Nioxin Pro Clinical |
| Number of Items | 1 |
| Recommended Uses For Product | Thinning hair |
| Recommended uses for product | Thinning hair |
| Scent | Unscented |
| Scent Name | Unscented |
| Unit Count | 338.0 gram |

## Product Details

- **Age range (description):** Adult
- **Brand:** NIOXIN
- **Item form:** Conditioner
- **Item weight:** 338 Grams
- **Scent:** Unscented

## 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/51PczikZ40L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great system
*by A***R on 28 October 2025*

Great hairloss System. Really noticed the difference with in 2 weeks of using. Smels great and goes along way. My hair feels soft clean and very noticeable decrease in shedding

### ⭐⭐⭐⭐⭐ 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 Serum - Overnight Hair Thickening Serum for Optimised Hair Growth - with Ginger & Caffeine (70ml)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-06*