Nioxin System 4 Cleanser Shampoo 16.9 oz for Noticeably Thinning Chemically Treated Hair
Nioxin Scalp + Hair Thickening System 4 Shampoo 16.9 oz
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Nioxin Scalp + Hair Thickening System 4 Shampoo 16.9 oz

|65 ratings

Key item 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.

Specs

Brand, NioxinHair type, Chemically TreatedShampoo & conditioner type, Daily ShampoosHair care key benefits, VolumizingScent, scentFeatures, Chemically treated., Nioxin Cleanser helps to remove follicle-clogging sebum, fatty acids and environmental residues from the scalp skin and hair., Cleanses to provide thicker-looking hair.

About this item

Product details

What is it: Nioxin Pro Clinical's System Kit 4 is designed for dry, damaged, color-treated hair with progressed thinning. Why you'll love it: Clinically and dermatologically tested, this shampoo nourishes and gently cleanses your hair to prevent against follicle-clogging sebum, resulting in thicker, fuller hair. Featured ingredients: Formulated with a powerful blend of wild mint oil, peppermint oil, and salicylic acid.
  • 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.
info:
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Specifications

Brand

Nioxin

Hair type

Chemically Treated

Shampoo & conditioner type

Daily Shampoos

Hair care key benefits

Volumizing

Directions

Instructions

Gently massage onto scalp and hair. Rinse well. Follow with Nioxin Scalp and Therapy and Nioxin Scalp Treatment.

Warranty

Warranty information

No Warranty

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Ingredients

Warnings

Customer ratings & reviews

4.6 out of 5 stars
stars
65 ratings37 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars77% (50)
  2. 4 stars15% (10)
  3. 3 stars3% (2)
  4. 2 stars0% (0)
  5. 1 star5% (3)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 37 reviews

Dec 20, 2025
Reviewer name: Kelly
Item details
Size: 16.9 oz
Sold and shipped byPro Beauty Buys
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great product!

Great product!! Soothes scalp too!

Incentivized Review
Helpful?6W82EP5EXV2G51682920
Jun 11, 2026
Reviewer name: Vic 60
5 out of 5 stars
5 out of 5 stars review

Awesome product.

I've been using system 4 since 1994 and my hair is full & thick. I'm 60 years old man and i'll always use it.

Review from Nioxin
Helpful?6W82EP5EXV2G51682920
Apr 26, 2026
Reviewer name: Deborah
Item details
Size: 16.9 oz
Sold byPro Beauty BuysDelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

This Stuff Works

This is advertised as shampoo for thinning / thin hair. Also a scalp cleaner. It works. There is no scent, which is good for me. The lather is amazing - as though I can feel it getting into every strand and washing product off my scalp. My hair is fuller, shiny and soft. It's also for color treated hair. Recommend.

Helpful?6W82EP5EXV2G51682920
Current price is $35.00$2.07/fl oz
Price when purchased online
  • Free shipping
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Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $35.00
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Save time and stay stocked!
One-time purchase $35.00

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Sold and shipped by Pro Beauty Buys
4.679807692307692 out of 5 stars
4.7 stars out of 5, based on 3160 seller reviews(4.7)
Extended holiday returns
Free Holiday returns until Jan 31