Browse In your home Methodology Ask Sonion

Greenlens

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

Navigate

Browse
In your home
Ask Sonion
Methodology
Criteria
Extension
How scoring works
Account

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

Function of Beauty — every product, every rater | Greenlens

Catalog/Function of Beauty

Function of Beauty

40 products in the catalog · functionofbeauty.com (visit site, opens in a new tab)

56Fair
avg. across 40 rated products · one axis, not the card composite: 30
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 Styling Aid 4 Hair Treatment Serum 14 Shampoo 8

Sort

Best overall Worst overall Most contested A–Z

92
Function of Beauty
Thermal Protection #Hairgoal Booster Shots, 08 Fragrance Free (2020 formulation)
ExcellentOverall · your weights
9985
Data Robust · 7/7
4 raters · broadly agree
Weakest on Labor
Greenlens Ingredient ScanIndependent100
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Lengthen #Hairgoal Booster Shots, 09 Fragrance Free (2020 formulation)

Function of Beauty

Lengthen #Hairgoal Booster Shots, 09 Fragrance Free (2020 formulation)

ExcellentOverall · your weights

9985

Data Robust · 7/7

4 raters · broadly agree

Weakest on Labor

Greenlens Ingredient ScanIndependent100
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Color Protection #Hairgoal Booster Shots, Fragrance Free

Function of Beauty

Color Protection #Hairgoal Booster Shots, Fragrance Free

ExcellentOverall · your weights

9985

Data Robust · 12/12

4 raters · broadly agree

Weakest on Labor

Greenlens Ingredient ScanIndependent100
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Soothe Scalp #Hairgoal Booster Shots, 02 Fragrance Free (2020 formulation)

Function of Beauty

Soothe Scalp #Hairgoal Booster Shots, 02 Fragrance Free (2020 formulation)

ExcellentOverall · your weights

9985

Data Robust · 7/7

4 raters · broadly agree

Weakest on Labor

Greenlens Ingredient ScanIndependent100
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Strengthen #Hairgoal Booster Shots, Fragrance Free (2020 formulation)

Function of Beauty

Strengthen #Hairgoal Booster Shots, Fragrance Free (2020 formulation)

ExcellentOverall · your weights

9985

Data Robust · 7/7

4 raters · broadly agree

Weakest on Labor

Greenlens Ingredient ScanIndependent100
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Curl Definition #Hairgoal Booster Shots, 07 (2020 formulation)

Function of Beauty

Curl Definition #Hairgoal Booster Shots, 07 (2020 formulation)

ExcellentOverall · your weights

9685

Data Robust · 10/10

5 raters · broadly agree

Weakest on Labor

EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Ingredient ScanIndependent97
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Curl Definition #Hairgoal Booster Shots, 07

Function of Beauty

Curl Definition #Hairgoal Booster Shots, 07

ExcellentOverall · your weights

9685

Data Robust · 10/11

5 raters · broadly agree

Weakest on Labor

EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Ingredient ScanIndependent97
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Volumize #Hairgoal Booster Shots, Fragrance Free (2020 formulation)

Function of Beauty

Volumize #Hairgoal Booster Shots, Fragrance Free (2020 formulation)

ExcellentOverall · your weights

9685

Data Robust · 10/10

5 raters · broadly agree

Weakest on Labor

EU Harmonised Classification (CLP Annex VI)Government90
Greenlens Ingredient ScanIndependent97
Greenlens Precautionary ScreenIndependent98
Greenlens Tolerance ScreenIndependent100
Cruelty-Free CertificationNonprofit85

Function of Beauty

Straight Hair Leave in Milk Mist

FairOverall · your weights

5485

raters split 40–94

Data Robust · 38/39

8 raters · split 40–94 on ingredient safety

Greenlens Precautionary ScreenIndependent42
EU Harmonised Classification (CLP Annex VI)Government70
IARC MonographsGovernment82
ANSES Endocrine DisruptorsGovernment40
Greenlens Ingredient ScanIndependent62
Greenlens Tolerance ScreenIndependent94
Health Canada Ingredient HotlistGovernment85
Cruelty-Free CertificationNonprofit85

Function of Beauty

Coily Hair Mask

FairOverall · your weights

5385

raters split 40–94

Data Robust · 36/36

7 raters · split 40–94 on ingredient safety

EU Harmonised Classification (CLP Annex VI)Government70
Greenlens Ingredient ScanIndependent62
Greenlens Precautionary ScreenIndependent42
Greenlens Tolerance ScreenIndependent94
ANSES Endocrine DisruptorsGovernment40
Health Canada Ingredient HotlistGovernment85
Cruelty-Free CertificationNonprofit85

Wavy Hair Leave in Treatment

Function of Beauty

Wavy Hair Leave in Treatment

FairOverall · your weights

5185

raters split 40–94

Data Robust · 28/29

6 raters · split 40–94 on ingredient safety

EU Harmonised Classification (CLP Annex VI)Government70
Greenlens Ingredient ScanIndependent62
Greenlens Precautionary ScreenIndependent42
Greenlens Tolerance ScreenIndependent94
ANSES Endocrine DisruptorsGovernment40
Cruelty-Free CertificationNonprofit85

Curly Hair Mask

Function of Beauty

Curly Hair Mask

FairOverall · your weights

5085

raters split 40–85

Data Robust · 35/36

7 raters · split 40–85 on ingredient safety

EU Harmonised Classification (CLP Annex VI)Government70
Greenlens Ingredient ScanIndependent46
Greenlens Precautionary ScreenIndependent42
Greenlens Tolerance ScreenIndependent82
ANSES Endocrine DisruptorsGovernment40
Health Canada Ingredient HotlistGovernment85
Cruelty-Free CertificationNonprofit85

Straight Hair Mask

Function of Beauty

Straight Hair Mask

FairOverall · your weights

5085

raters split 40–85

Data Robust · 40/41

7 raters · split 40–85 on ingredient safety

EU Harmonised Classification (CLP Annex VI)Government70
Greenlens Ingredient ScanIndependent46
Greenlens Precautionary ScreenIndependent42
Greenlens Tolerance ScreenIndependent82
ANSES Endocrine DisruptorsGovernment40
Health Canada Ingredient HotlistGovernment85
Cruelty-Free CertificationNonprofit85

Wavy Hair Mask Base with Vegan Squalane

Function of Beauty

Wavy Hair Mask Base with Vegan Squalane

PoorOverall · your weights

2285

raters split 1–85

Data Robust · 39/41

7 raters · split 1–85 on ingredient safety

EU Harmonised Classification (CLP Annex VI)Government70
Greenlens Precautionary ScreenIndependent42
ANSES Endocrine DisruptorsGovernment40
Greenlens Ingredient ScanIndependent1
Greenlens Tolerance ScreenIndependent25
Health Canada Ingredient HotlistGovernment85
Cruelty-Free CertificationNonprofit85