

💥 Unlock fuller, thicker hair—because your scalp deserves the VIP treatment!
Nioxin System 4 Scalp + Hair Thickening Treatment is a professional leave-in serum designed for colored hair experiencing progressed thinning. Featuring the Scalp Access Delivery System 2.0, it strengthens hair strands, increases hair diameter, and provides UV protection to maintain vibrant color. This award-winning formula is the final step in a three-part regimen, trusted by stylists for over 16 years to refresh the scalp and reduce hair loss due to breakage.



















































| ASIN | B0054Y0PMK |
| ASIN | B0054Y0PMK |
| Best Sellers Rank | #29,013 in Beauty ( See Top 100 in Beauty ) #69 in Scalp Treatments |
| Customer reviews | 4.4 4.4 out of 5 stars (2,588) |
| Date First Available | 8 August 2012 |
| Department | Women's Hair Care |
| Department | Women's Hair Care |
| Is Discontinued By Manufacturer | No |
| Item model number | 81629325 |
| Item model number | 81629325 |
| Manufacturer | Nioxin |
| Manufacturer | Nioxin |
| Product Dimensions | 5.87 x 4.7 x 19.05 cm; 193 g |
| Product Dimensions | 5.87 x 4.7 x 19.05 cm; 193 g |
T**N
Excellent product,I have been using this for the past 3 years,and it has helped my hair stay strong and shiny.
S**T
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.
M**Z
Si hace el efecto que menciona, buena compra
A**R
Like this product, it really does work. Used it on the hair line at my temples as my hair is thinning, baby hairs sprouted and has since grown in well and lengthened. Now I don't look like I have a receding hair line when I put my hair in a ponytail. Huge bottle, will last a long time. Makes your hair feel stiff ,but I put it on at night and wash my hair in the morning. Be careful as not to let any run down your face as it will leave a red mark,but will be gone by morning, wash that off immediately. Best to use a head band to protect your face from drips running down.hold head back. Will buy again as it does work.
R**A
Llevo usando los productos de Nioxin 2 años y mi pelo es otro completamente. La única pega es que la espuma final puede escocer unos segundos, pero merece la pena.
Trustpilot
3 days ago
1 week ago