Nioxin System 4 Scalp & Hair Leave-In Treatment 3.38 oz
Nioxin System 4 Scalp & Hair Leave-In Treatment 3.38 oz
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Nioxin

Nioxin System 4 Scalp & Hair Leave-In Treatment 3.38 oz

4.4 stars out of 2139 reviews
(4.4)|
2,139 ratings

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Current price is $26.00
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Columbus, 43215
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4.617134559535334 stars out of 5, based on 2071 seller reviews(4.6)
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Customer ratings & reviews

4.4 out of 5 stars
stars2,139 ratings2,119 reviews
How item rating is calculated
  1. 5 stars57% (1,222)
  2. 4 stars27% (588)
  3. 3 stars11% (234)
  4. 2 stars2% (53)
  5. 1 star2% (42)

Reviews summary

Pros

  • : Convenient application with easy-to-use pump bottle.
  • : Holds a generous amount of product.
  • : Has a refreshing minty aroma.
  • : Has a texture that doesn't weigh hair down.
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Showing 1-3 of 2,119 reviews

Apr 10, 2026
VickyB
5 out of 5 stars review

Hair feels amazing

[This review was collected as part of a promotion.] This serum makes my scalp feel so much healthier. I’ve been using it daily for a month now and will definitely be repurchasing to use long term. I use it alongside the corresponding shampoo and conditioner and my hair is so soft and so much less knotty than before. Being newly postpartum (3months) my hair was very dry and frizzy but now feels lovely snd smooth. It also isn’t breaking as easily as it was before despite using a bobble to put my hair up most days

Review from influenster.com
Helpful?4ZDHTKSXSSFN9960109161
Mar 23, 2026
MarijaP
5 out of 5 stars review

Lightweight serum

[This review was collected as part of a promotion.] Using this serum with matching shampoo and conditioner has made me hair softer, healthier, and easier to manage, with less breakage. It targets ageing concerns like thinning, dullness, and early greying. The lightweight formula absorbs quickly into my scalp without feeling greasy or sticky, making it perfect for daily use.

Review from influenster.com
Helpful?4ZDHTKSXSSFN9960109161
Mar 31, 2026
CatherineS
5 out of 5 stars review

Excellent

[This review was collected as part of a promotion.] This serum is brilliant at giving a more youthful appearance to hair. It’s packed full of skin loving ingredients that stimulate the scalp. Together with the shampoo and conditioner it leaves hair feeling rejuvenated and I would recommend to anyone with aging hair concerns

Review from influenster.com
Helpful?4ZDHTKSXSSFN9960109161