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🌟 Unlock thicker, fuller hair — because your scalp deserves the spotlight!
Nioxin System 4 is a professional-grade hair thickening system designed specifically for dry, damaged, and coloured hair with progressed thinning. Featuring a lightweight conditioner enriched with biotin, niacinamide, and UV protectors, it hydrates and strengthens hair from root to tip while gently cleansing the scalp to remove follicle-clogging impurities. Clinically and dermatologically tested, this system promotes a healthier scalp environment and visibly thicker, fuller hair when used daily alongside the matching shampoo and serum.














| ASIN | B0DFCM76HJ |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | 1,372 in Beauty ( See Top 100 in Beauty ) 192 in Hair Conditioners |
| Brand | NIOXIN |
| Brand Name | NIOXIN |
| Country Of Origin | Mexico |
| Customer Reviews | 4.4 out of 5 stars 985 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 |
| Manufacturer Part Number | 99350179991 |
| Number of Items | 1 |
| Recommended Uses For Product | Thinning hair |
| Recommended uses for product | Thinning hair |
| Scent | Unscented |
| Scent Name | Unscented |
| Unit Count | 300.0 millilitre |
Q**Y
Good hair
Excellent product Does exactly as it says My hair is coming back in the places it was lost And my other hair is thicker and definitely healthier
M**J
Seeing progress.
Smells really nice, feels refreshing and is actually working when combined with taking biotin everyday, my hair is growing back after 2 months of use.
M**6
Excellent at what it promises, but ......
Fabulous thickening and new growth of my very fine and 70 year old hair. However it is also VERY drying and resulted in exaggerating the frizzy ends of my hair. So swings and roundabouts.
J**S
Good quality
Always good quality. Use once a week. Does help with hair growth and treatment.
J**A
Best shampoo!
The best cleansing shampoo!
A**N
Hope this actually works
Been using for a month not seem any improvement upto now
H**E
Improves hair with prolonged use.
I have been using this shampoo and conditioner for over a year and have seen great results. My hair has improved without a doubt.
A**R
Shampoo
It's great hair is so soft not been using it long enough yet
M**I
Cura capelli e cuoio capelluto ideale per cute e capelli grassi, contiene ingredienti rinfrescanti
Prodotto consigliato per la cura dei capelli e del cuoio capelluto, ideale per chi soffre di cute e capelli grassi, contiene ingredienti rinfrescanti
A**.
Excelente
Recomendo. Apesar de parecer estranho aplicar o condicionado no couro cabeludo, não deixa pesado ou oleoso.
T**S
Muito bom!
Chegou rápido e devidamente embalado, o produto é ótimo!
N**I
5 Stars
Great product, excellent price and quick delivery.
C**G
Hasn't worked for me.
This hasn't really worked for me. My hair is still falling out after 3+ months of use.
Trustpilot
4 days ago
3 weeks ago