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Every public rating on one cosmetic, the places they disagree kept visible, and a single score whose weighting you control.

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The one rule

We never blend a score that hides who disagrees. Funding model travels with every rating. Weights are computed at read time and never stored.

Cosmetics only · lead with safetyProduct data from public sources incl. Open Beauty Facts & EWG Skin Deep · their ratings never scraped or shown

As an Amazon Associate, Greenlens earns from qualifying purchases. Affiliate income never changes a rating or ranking.Privacy Terms

Nioxin — every product, every rater | Greenlens

Catalog/Nioxin

N

Nioxin

50 products in the catalog

42Poor
avg. across 50 rated products · one axis, not the card composite: 50
products the raters split on

The average covers the ingredient-safety axis only, computed live from each product's raters — never a blended or stored brand score. Open a product to weight the axes yourself.

All products Conditioner 12 Hair Loss Treatment 10 Hair Treatment Serum 5 Shampoo 17 Styling 5

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Best overall Worst overall Most contested A–Z

67
Nioxin
Thickening Gel With Pro-Thick Nioxin
FairOverall · your weights
558659
raters split 42–100
Data Robust · 19/19
6 raters · split 42–100 on ingredient safety
Greenlens Ingredient ScanIndependent62
Greenlens Precautionary ScreenIndependent42
Greenlens Tolerance ScreenIndependent100
EU Microplastics RestrictionGovernment86
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

4 Scalp Therapy Conditioner Fine Hair Noticeably Thinning

Nioxin

4 Scalp Therapy Conditioner Fine Hair Noticeably Thinning

FairOverall · your weights

6359

raters split 30–88

Data Robust · 38/39

8 raters · split 30–88 on labor practices

ANSES Endocrine DisruptorsGovernment60
Health Canada Ingredient HotlistGovernment85
EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Ingredient ScanIndependent59
Greenlens Precautionary ScreenIndependent54
Greenlens Tolerance ScreenIndependent88
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

Scalp & Hair Treatment

Nioxin

Scalp & Hair Treatment

FairOverall · your weights

6359

raters split 30–88

Data Robust · 36/36

7 raters · split 30–88 on labor practices

ANSES Endocrine DisruptorsGovernment45
EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Ingredient ScanIndependent81
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent94
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

Scalp & Hair Treatment System 2

Nioxin

Scalp & Hair Treatment System 2

FairOverall · your weights

5659

raters split 30–88

Data Robust · 42/43

8 raters · split 30–88 on labor practices

EU Harmonised Classification (CLP Annex VI)Government80
Greenlens Ingredient ScanIndependent62
Greenlens Precautionary ScreenIndependent42
ANSES Endocrine DisruptorsGovernment60
Greenlens Tolerance ScreenIndependent94
Health Canada Ingredient HotlistGovernment85
Open Beauty Facts CertificationsNonprofit88
Cruelty-Free CertificationNonprofit30

System 4 Scalp Treatment for colored hair

Nioxin

System 4 Scalp Treatment for colored hair

FairOverall · your weights

5659

raters split 30–88

Data Robust · 41/41

8 raters · split 30–88 on labor practices

Health Canada Ingredient HotlistGovernment85
ANSES Endocrine DisruptorsGovernment60
EU Harmonised Classification (CLP Annex VI)Government80
Greenlens Ingredient ScanIndependent62
Greenlens Precautionary ScreenIndependent42
Greenlens Tolerance ScreenIndependent94
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

Diamax ADVANCED Thickening Xtrafusion Treatment

Nioxin

Diamax ADVANCED Thickening Xtrafusion Treatment

FairOverall · your weights

5459

raters split 42–100

Data Good · 10/13

6 raters · split 42–100 on ingredient safety

Greenlens Precautionary ScreenIndependent42
ANSES Endocrine DisruptorsGovernment60
Greenlens Ingredient ScanIndependent62
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

Scalp Therapy Conditioner System 5

Nioxin

Scalp Therapy Conditioner System 5

FairOverall · your weights

5259

raters split 30–88

Data Robust · 35/35

7 raters · split 30–88 on labor practices

EU Harmonised Classification (CLP Annex VI)Government80
Greenlens Ingredient ScanIndependent56
Greenlens Precautionary ScreenIndependent54
ANSES Endocrine DisruptorsGovernment40
Greenlens Tolerance ScreenIndependent88
Open Beauty Facts CertificationsNonprofit88
Cruelty-Free CertificationNonprofit30

Scalp Therapy Conditioner System 1

Nioxin

Scalp Therapy Conditioner System 1

PoorOverall · your weights

4059

raters split 20–94

Data Robust · 36/38

8 raters · split 20–94 on ingredient safety

Health Canada Ingredient HotlistGovernment85
Greenlens Ingredient ScanIndependent54
EU Harmonised Classification (CLP Annex VI)Government80
Greenlens Precautionary ScreenIndependent32
ANSES Endocrine DisruptorsGovernment20
Greenlens Tolerance ScreenIndependent94
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

System #3 Scalp Treatment

Nioxin

System #3 Scalp Treatment

PoorOverall · your weights

4059

raters split 25–90

Data Robust · 29/29

8 raters · split 25–90 on ingredient safety

EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Precautionary ScreenIndependent26
ANSES Endocrine DisruptorsGovernment25
Greenlens Ingredient ScanIndependent40
Greenlens Tolerance ScreenIndependent82
Health Canada Ingredient HotlistGovernment70
Cruelty-Free CertificationNonprofit30
Open Beauty Facts CertificationsNonprofit88

Scalp Therapy Conditioner System 2

Nioxin

Scalp Therapy Conditioner System 2

PoorOverall · your weights

3459

raters split 10–90

Data Robust · 41/42

9 raters · split 10–90 on ingredient safety

Health Canada Ingredient HotlistGovernment85
ECHA SVHC Candidate ListGovernment80
Greenlens Ingredient ScanIndependent37
EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Precautionary ScreenIndependent10
ANSES Endocrine DisruptorsGovernment20
Greenlens Tolerance ScreenIndependent82
Open Beauty Facts CertificationsNonprofit88
Cruelty-Free CertificationNonprofit30