EWG Skin Deep® | Nioxin System 2 Scalp Therapy (2018 formulation) Rating

HOW WE DETERMINE SCORES LEARN MORE ABOUT EWG VERIFIED™

Data Availability:

Limited

Nioxin System 2 Scalp Therapy (2018 formulation)

WHERE TO BUY

Amazon

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Ingredient concerns

See how this product scores for common concerns.

LOW

Cancer
HIGH

Allergies & Immunotoxicity
MODERATE

Developmental and Reproductive Toxicity
HIGH

Use Restrictions

Ingredient scores

Ingredients are scored based on their formulation and concentration in this product. Click on an ingredient for more information.

WATER

Data Availability: Robust

FUNCTION(S)	solvent
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CETYL ALCOHOL

Data Availability: Limited

FUNCTION(S)	emulsion stabilizer, fragrance ingredient, opacifying agent, surfactant - emulsifying agent;surfactant - foam booster, viscosity increasing agent - aqueous, viscosity increasing agent -nonaqueous, emollient, emulsifying, emulsion stabilising, foam boosting, masking, opacifying, surfactant, viscosity controlling
CONCERNS	• Non-reproductive organ system toxicity (moderate)
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STEARAMIDOPROPYL DIMETHYLAMINE

Data Availability: Limited

FUNCTION(S)	antistatic agent, hair conditioning agent, antistatic, emulsifying, hair conditioning, surfactant
CONCERNS	• Allergies/immunotoxicity (moderate) • Use restrictions (high)
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STEARYL ALCOHOL

Data Availability: Limited

FUNCTION(S)	emulsion stabilizer, fragrance ingredient, surfactant - emulsifying agent, surfactant - foambooster, viscosity increasing agent - aqueous, viscosity increasing agent - nonaqueous, emollient, emulsifying, emulsion stabilising, foam boosting, masking, opacifying, refatting, surfactant, viscosity controlling
CONCERNS	• Irritation (skin, eyes, or lungs) (moderate)
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QUATERNIUM-18

Data Availability: Limited

FUNCTION(S)	antistatic agent, antistatic, hair conditioning, surfactant
CONCERNS	• Developmental/reproductive toxicity (low) • Allergies/immunotoxicity (moderate) • Neurotoxicity (low) • Endocrine disruption (low) • Non-reproductive organ system toxicity (moderate)
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BENZYL ALCOHOL

Data Availability: Fair

FUNCTION(S)	external analgesic, fragrance ingredient, oral health care drug, preservative, solvent;viscosity decreasing agent, masking, solvent
CONCERNS	• Allergies/immunotoxicity (high) • Use restrictions (moderate) • Non-reproductive organ system toxicity (moderate) • Occupational hazards (high)
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PHENOXYETHANOL

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, preservative
CONCERNS	• Allergies/immunotoxicity (low) • Use restrictions (moderate) • Non-reproductive organ system toxicity (moderate) • Irritation (skin, eyes, or lungs) (high) • Occupational hazards (high)
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CETEARYL ALCOHOL

Data Availability: Limited

FUNCTION(S)	emulsion stabilizer, opacifying agent, surfactant - foam booster, viscosity increasingagent - aqueous, viscosity increasing agent - nonaqueous, emollient, emulsifying, emulsion stabilising, foam boosting, opacifying, surfactant, viscosity controlling
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HYDROXYPROPYL GUAR

Data Availability: Limited

FUNCTION(S)	binder, emulsion stabilizer, film former, viscosity increasing agent - aqueous, antistatic, binding, emulsion stabilising, film forming, surfactant, viscosity controlling
CONCERNS	• Use restrictions (low) • Non-reproductive organ system toxicity (moderate)
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AMINOPROPYL DIMETHICONE
Appeared as: BIS-AMINOPROPYL DIMETHICONE

Data Availability: None

FUNCTION(S)	hair conditioning agent, hair conditioning
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OLEYL ALCOHOL

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, skin-conditioning agent - emollient, solvent, viscosity increasingagent - nonaqueous, emollient, emulsifying, opacifying, viscosity controlling
CONCERNS	• Irritation (skin, eyes, or lungs) (moderate)
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GLYCERYL MONOSTEARATE
Appeared as: GLYCERYL STEARATE

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, skin-conditioning agent - emollient, surfactant - emulsifying agent, emollient, emulsifying
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HYDROXYETHYLCELLULOSE

Data Availability: Fair

FUNCTION(S)	binder, emulsion stabilizer, film former, viscosity increasing agent - aqueous, binding, emulsion stabilising, film forming, stabilising, viscosity controlling
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METHYLPARABEN

Data Availability: Fair

FUNCTION(S)	fragrance ingredient, preservative
CONCERNS	• Allergies/immunotoxicity (moderate) • Use restrictions (low) • Endocrine disruption (moderate) • Biochemical or cellular level changes (moderate)
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PROPYLPARABEN

Data Availability: Fair

FUNCTION(S)	fragrance ingredient, preservative, perfuming
CONCERNS	• Developmental/reproductive toxicity (moderate) • Allergies/immunotoxicity (moderate) • Use restrictions (moderate) • Endocrine disruption (high) • Ecotoxicology (low)
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POLYSORBATE-60

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, surfactant - emulsifying agent, surfactant - solubilizing agent, emulsifying
CONCERNS	• Use restrictions (low) • Non-reproductive organ system toxicity (low) • Irritation (skin, eyes, or lungs) (low) • Contamination concerns (ETHYLENE OXIDE and 1,4-DIOXANE)
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MENTHA PIPERITA (PEPPERMINT) OIL

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, skin-conditioning agent - miscellaneous
CONCERNS	• Cancer (low) • Allergies/immunotoxicity (high) • Enhanced skin absorption • Use restrictions (low) • Neurotoxicity (low) • Endocrine disruption (low) • Irritation (skin, eyes, or lungs) (low)
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MENTHOL

Data Availability: Fair

FUNCTION(S)	denaturant, external analgesic, flavoring agent, fragrance ingredient, oral health caredrug, masking, refreshing, soothing
CONCERNS	• Allergies/immunotoxicity (high) • Multiple, additive exposure sources (low)
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MENTHA ARVENSIS (WILD MINT) OIL
Appeared as: MENTHA ARVENSIS LEAF OIL

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, masking
CONCERNS	• Allergies/immunotoxicity (high)
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EDTA

Data Availability: Fair

FUNCTION(S)	chelating agent, chelating
CONCERNS	• Enhanced skin absorption • Non-reproductive organ system toxicity (moderate) • Irritation (skin, eyes, or lungs) (high)
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CITRIC ACID

Data Availability: Good

FUNCTION(S)	chelating agent, fragrance ingredient, ph adjuster, buffering, chelating, masking
CONCERNS	• Use restrictions (moderate)
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PROPYLENE GLYCOL

Data Availability: Fair

FUNCTION(S)	fragrance ingredient, humectant, skin-conditioning agent - humectant, skin-conditioningagent - miscellaneous, solvent, viscosity decreasing agent, skin conditioning, viscosity controlling
CONCERNS	• Allergies/immunotoxicity (moderate) • Enhanced skin absorption • Use restrictions (low) • Non-reproductive organ system toxicity (moderate) • Irritation (skin, eyes, or lungs) (high)
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CAMELLIA SINENSIS (GREEN TEA) LEAF EXTRACT
Appeared as: CAMELLIA SINENSIS LEAF EXTRACT

Data Availability: Fair

FUNCTION(S)	antioxidant, fragrance ingredient, oral care agent, skin-conditioning agent -miscellaneous, ultraviolet light absorber, antimicrobial, astringent, emollient, humectant, masking, oral care, skin conditioning, skin protecting, tonic, uv absorber
CONCERNS	• Allergies/immunotoxicity (moderate) • Use restrictions (moderate)
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CYSTINE BIS-PG-PROPYL SILANETRIOL

Data Availability: None

FUNCTION(S)	skin-conditioning agent - miscellaneous, skin conditioning
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LECITHIN

Data Availability: Good

FUNCTION(S)	skin-conditioning agent - miscellaneous, surfactant - emulsifying agent, antistatic, emollient, emulsifying, skin conditioning
CONCERNS	• Developmental/reproductive toxicity (low) • Allergies/immunotoxicity (moderate) • Enhanced skin absorption • Use restrictions (low) • Multiple, additive exposure sources (low) • Contamination concerns (NITROSAMINES)
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FOENICULUM VULGARE (FENNEL) FRUIT EXTRACT

Data Availability: Limited

FUNCTION(S)	fragrance ingredient, skin-conditioning agent - miscellaneous, perfuming
CONCERNS	• Allergies/immunotoxicity (low)
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SACCHAROMYCES/ MAGNESIUM FERMENT

Data Availability: None

FUNCTION(S)	not reported, skin conditioning
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BIOTIN/ FOLIC ACID/ CYANOCOBALAMIN/ NIACINAMIDE/ PANTOTHENIC ACID/ RIBOFLAVIN/ THIAMINE/ YEAST POLYPEPTIDES
Appeared as: BIOTIN/FOLIC ACID/CYANOCOBALAMIN/NIACINAMIDE/PANTOTHENIC ACID/PYRIDOXINE/RIBOFLAVIN/THIAMINE/YEAST POLYPEPTIDES

Data Availability: None

FUNCTION(S)	skin conditioning
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YEAST EXTRACT

Data Availability: Fair

FUNCTION(S)	not reported, skin conditioning
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SACCHAROMYCES/ IRON FERMENT

Data Availability: Limited

FUNCTION(S)	not reported, skin conditioning
CONCERNS	• Developmental/reproductive toxicity (low) • Persistence and bioaccumulation (high) • Non-reproductive organ system toxicity (low)
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SACCHAROMYCES/ COPPER FERMENT

Data Availability: None

FUNCTION(S)	not reported, skin conditioning
CONCERNS	• Persistence and bioaccumulation (moderate) • Non-reproductive organ system toxicity (low)
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SACCHAROMYCES/ SILICON FERMENT

Data Availability: None

FUNCTION(S)	not reported, skin conditioning
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SACCHAROMYCES/ ZINC FERMENT

Data Availability: Fair

FUNCTION(S)	not reported, skin conditioning
CONCERNS	• Use restrictions (moderate) • Persistence and bioaccumulation (moderate) • Non-reproductive organ system toxicity (low)
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CI 42090 (FD&C BLUE NO. 1 OR D&C BLUE NO. 4)
Appeared as: BLUE 1

Data Availability: Fair

FUNCTION(S)	colorant, hair dyeing
CONCERNS	• Cancer (moderate) • Use restrictions (high) • Neurotoxicity (low) • Endocrine disruption (low) • Persistence and bioaccumulation (moderate) • Non-reproductive organ system toxicity (moderate) • Multiple, additive exposure sources (low) • Irritation (skin, eyes, or lungs) (moderate) • Contamination concerns (ANILINE and CADMIUM (pyrophoric))
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Ingredients from packaging:

WATER, CETYL ALCOHOL, STEARAMIDOPROPYL DIMETHYLAMINE, STEARYL ALCOHOL, QUATERNIUM-18, BENZYL ALCOHOL, PHENOXYETHANOL, CETEARYL ALCOHOL, HYDROXYPROPYL GUAR, BIS-AMINOPROPYL DIMETHICONE, OLEYL ALCOHOL, GLYCERYL STEARATE, HYDROXYETHYLCELLULOSE, METHYLPARABEN, PROPYLPARABEN, POLYSORBATE 60, MENTHA PIPERITA (PEPPERMINT) OIL, MENTHOL, MENTHA ARVENSIS LEAF OIL, EDTA, CITRIC ACID, PROPYLENE GLYCOL, CAMELLIA SINENSIS LEAF EXTRACT, CYSTINE BIS-PG-PROPYL SILANETRIOL, LECITHIN, FOENICULUM VULGARE (FENNEL) FRUIT EXTRACT, SACCHAROMYCES/MAGNESIUM FERMENT, BIOTIN/FOLIC ACID/CYANOCOBALAMIN/NIACINAMIDE/PANTOTHENIC ACID/PYRIDOXINE/RIBOFLAVIN/THIAMINE/YEAST POLYPEPTIDES, YEAST EXTRACT, SACCHAROMYCES/IRON FERMENT, SACCHAROMYCES/COPPER FERMENT, SACCHAROMYCES/SILICON FERMENT, SACCHAROMYCES/ZINC FERMENT, BLUE 1.

Product's animal testing policies

Some cosmetics companies have taken People for the Ethical Treatment of Animals and Leaping Bunny animal-testing pledges. For consumers who are concerned about companies’ policies on animal testing, Skin Deep reports this information.

PETA Cruelty-free Companies

Companies that join the "Caring Consumer" program of People for the Ethical Treatment of Animals, a leading international animal rights advocacy organization, attest that "neither they nor their ingredient suppliers conduct or commission any animal tests on ingredients, formulations or finished products, and that they pledge not to do so in the future."

LEARN MORE ON PETA.ORG

Understanding scores

Cosmetics and personal care products are not required to be tested for safety before being allowed on the market. The Skin Deep® scoring system was designed to help the public understand whether a product is safe to use or whether it contains ingredients of concern.

Every product and ingredient in Skin Deep gets a two-part score – one for hazard and one for data availability. The safest products score well by both measures, with a low hazard rating and a fair or better data availability rating.

HOW WE DETERMINE SCORES

Hazard score

The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. The EWG VERIFIED™ mark means a product meets EWG’s strictest criteria for transparency and health.

Data availability

The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.

NONE LIMITED FAIR GOOD ROBUST

Low Availability

Moderate Availability

High Availability