---
product_id: 253773579
title: "System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary)"
brand: "nioxin"
price: "313 Lei"
currency: RON
in_stock: true
reviews_count: 5
category: "Nioxin"
url: https://www.desertcart.ro/products/253773579-system-4-scalp-hair-thickening-treatment-serum-for-damaged-hair
store_origin: RO
region: Romania
---

# Nourishing botanicals 85% thicker hair 80% increased density System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary)

**Brand:** nioxin
**Price:** 313 Lei
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary) by nioxin
- **How much does it cost?** 313 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/253773579-system-4-scalp-hair-thickening-treatment-serum-for-damaged-hair)

## 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

- • **Advanced Scalp Detox:** Cleanses impurities & excess sebum for a healthier scalp environment
- • **Botanical Nourishment:** Infused with antioxidants and UV protectors to revitalize scalp health
- • **Breakage Defense Formula:** Strengthens hair resilience to reduce thinning and protect color-treated strands
- • **Tailored for Progressed Thinning:** Specifically designed for dry, damaged, color-treated hair needing density restoration
- • **Clinically Proven Thickness Boost:** 85% of users see visibly thicker hair in 30 days

## Overview

Nioxin System 4 Scalp + Hair Thickening Treatment is a clinically designed leave-in serum targeting dry, damaged, color-treated hair with progressed thinning. Backed by 85% user-reported thickening and 80% increased density, it detoxifies the scalp, strengthens hair to reduce breakage, and nourishes with botanicals and UV protection. Visible results in just 30 days make it a must-have for professionals seeking a confident, fuller hair appearance.

## Description

Protect and refresh the scalp with Nioxin’s three part System 4 Scalp & Hair Treatment for Colored Hair with Progressed Thinning. This diameter-increasing leave-in hair and scalp treatment is particularly formulated for colored hair with progressed thinning. Nioxin’s treatment Scalp Access Delivery System 2.0 technology helps prevent hair loss due to breakage, providing a refreshed scalp environment. Nioxin’s Scalp and Hair Treatment is the final step of a three part System, designed to strengthen the hair and amplify hair structure.

Review: Excellent product,I have been using this for the past 3 years,and it has helped my hair stay strong and shiny.
Review: This product is overpriced. In Australia for the same price you receive a set consisting of 150ml shampoo and 150ml conditioner plus 40ml of the hair thickener which is actually a mousse. The advertising on the desertcart site actually shows these 3 products in one image on the LHS of the main image. This image should not be there as it is misleading. So what do I now have? An overpriced mousse which you can pick up anywhere at a fraction of the cost.

## Features

- 85% of consumers noticed a thickening effect, 80% noticed an increase in hair density, 80% noticed an increase in hair fullness
- Thickens the hair: Nioxin System Kit 4 is clinically designed to add thickness and fullness to dry, damaged, color-treated hair with progressed thinning, with visible results in just 30 days.
- Supports scalp health: The advanced formula of Nioxin System Kit 4 gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp.
- Reduces hair thinning: By strengthening hair resilience, Nioxin System Kit 2 helps minimize hair breakage, promoting the appearance of fuller, thicker hair while protecting the hair color.
- Nourishes the scalp: Infused with nourishing botanicals, antioxidants, and UV protecting ingredients, this kit's Scalp + Hair Thickening Treatment can nourish and revitalize the scalp, improving its overall health and condition.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005F1IMFO |
| ASIN  | B005F1IMFO |
| Best Sellers Rank | #20,156 in Beauty ( See Top 100 in Beauty ) #55 in Scalp Treatments |
| Customer reviews | 4.4 4.4 out of 5 stars (2,593) |
| Date First Available  | 7 August 2012 |
| Department | womens |
| Department  | womens |
| Is Discontinued By Manufacturer  | No |
| Item model number | 81629319 |
| Item model number  | 81629319 |
| Manufacturer | Nioxin |
| Manufacturer  | Nioxin |
| Product Dimensions | 5 x 4 x 17.5 cm; 95.25 g |
| Product Dimensions  | 5 x 4 x 17.5 cm; 95.25 g |

## Product Details

- **Brand:** NIOXIN
- **Item form:** Liquid
- **Item weight:** 0.21 Pounds
- **Product benefits:** Strengthens thin and weakened hair
- **Scent:** Peppermint Oil

## Images

![System 4 Scalp + Hair Thickening Treatment- Serum for Damaged Hair with Progressed Thinning, 3.4 oz (Packaging May Vary) - Image 1](https://m.media-amazon.com/images/I/61Qe2jDK1jL.jpg)

## Available Options

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

## Questions & Answers

**Q: How do i know this is the real product? when i google the company it looks like its an indonesian company. how do i know it's authentic?**
A: My bottle of Nioxin Cleanser (shampoo) says it is a product of the Wella Corporation in Woodland Hills, California.  There is an 800 # for questions:
800-935-5273.

**Q: Is this product also a detangler?**
A: This is a really good question I will be happy to answer for you today. This is our Nioxin Scalp and Hair Treatment after shampoo and Conditioner you towel then apply 2-3 pumps on your finger tips and masaage into your scalp leave let dry 1 minute and then you would be able to apply any products you normally would including a detangler. 
This is not a detangler as it is to promote healthy hair growth and stimulates the scalp. I hope this answered your question today.
Have a Fabulous Hair Day!

**Q: Does this have Saw Palmetto?**
A: It is not listed as such on the label. They have 800-935-5273 US 800-267-1962 Canada for questions.

**Q: Does it contain minoxidil**
A: Thank you for contacting Nioxin. We value your brand loyalty.
Nioxin System 4 Scalp & Hair Leave-in Treatment does not contain minoxidil.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***N on 16 October 2018*

Excellent product,I have been using this for the past 3 years,and it has helped my hair stay strong and shiny.

### ⭐⭐ Review
*by S***T on 9 November 2025*

This product is overpriced. In Australia for the same price you receive a set consisting of 150ml shampoo and 150ml conditioner plus 40ml of the hair thickener which is actually a mousse. The advertising on the Amazon site actually shows these 3 products in one image on the LHS of the main image. This image should not be there as it is misleading. So what do I now have? An overpriced mousse which you can pick up anywhere at a fraction of the cost.

### ⭐⭐⭐⭐⭐ Review
*by M***Z on 30 October 2023*

Si hace el efecto que menciona, buena compra

## Frequently Bought Together

- Nioxin System 4 Scalp Care + Hair Thickening Leave-In Treatment For Colored, Dry, & Damaged Hair with Progressed Thinning Nourish & Boost Hair Density with Niacinamide & Biotin
- Nioxin Night Density Rescue Serum | Overnight Hair Thickening Serum | Protects Against Hair Breakage | Intensive Treatment with Oxydine | 2.4 Fl oz.
- Nioxin Hair Fall Defense Intensive Daily Leave-In Hair Treatment | With Niacinamide, Caffeine, Lauric Acid, and Sandalore | For Thicker, Stronger Hair | 2.3 Fl Oz.

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-26*