Nioxin System 2 Scalp + Hair Thickening Shampoo for Natural Hair with Progressed Thinning | Cleanse & Boost Hair Density with…
Best for
Best for thinning hair
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Current price
$18.90
Updated Jun 27, 2026 · 1 min read
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the verified-purchase reviewers we read, Nioxin System 2 earns a 4.6 average over roughly 18,000 ratings, with customers experiencing progressed thinning frequently reporting a fuller, thicker feel and a clean, stimulated scalp. The niacinamide-and-biotin formula is positioned for natural hair with noticeable thinning. We want to be transparent that the data we synthesized included no independent clinical testing, so the density and thickening claims rest on aggregate customer perception rather than measured regrowth.
What reviewers liked
- Strong 4.6 average over roughly 18,000 verified-purchase ratings
- Reviewers report fuller, thicker-feeling hair and a clean scalp
- Niacinamide and biotin formula aimed specifically at thinning hair
Where it falls short
- Some reviewers find it drying without the matching conditioner
- Thickening is a cosmetic effect, not verified regrowth
- No independent clinical data in the pool to support claims
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Across the verified-purchase reviewers we read, Nioxin System 2 earns a 4.6 average over roughly 18,000 ratings, with customers experiencing progressed thinning frequently reporting a fuller, thicker feel and a clean, stimulated scalp. The niacinamide-and-biotin formula is positioned for natural hair with noticeable thinning.
We want to be transparent that the data we synthesized included no independent clinical testing, so the density and thickening claims rest on aggregate customer perception rather than measured regrowth. Reviewers commonly describe a tingling sensation they associate with the cleansing action, though a minority find it drying and recommend pairing it with the matching conditioner.
- 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 2 is clinically designed to add thickness and fullness to natural hair with progressed thinning, with visible results in just 30 days.
- Supports scalp health
- The advanced formula of Nioxin System Kit 2 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.
- 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.
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