System 4 Scalp Care + Hair Thickening Treatment
The Nioxin System 4 Scalp Care + Hair Thickening Treatment is a misc. Our analysis of its 44 ingredients (26 low-risk) rates it Excellent (88/100). Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
Product Ingredient Safety Breakdown (EWG Rating Ratings)
CIR Findings Breakdown
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
1
|
|
Water
(Solvent) |
|
|
1
|
A
|
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
|
|
3
|
|
Phenylbenzimidazole Sulfonic Acid
(Uv Absorber, Uv Filter) |
|
|
1
|
|
Caffeine
(Fragrance, Skin Conditioning, Masking) |
|
|
3
|
B
|
Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
3
|
A
|
Benzophenone-4
(Uv Absorber, Uv Filter) |
|
4
|
A
|
Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
|
3
|
A
|
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
|
|
3
|
A
|
PEG-12 Dimethicone
(Hair Conditioning, Skin Conditioning) |
|
|
5
|
A
|
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking) |
Allergens
|
|
3
|
B
|
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
|
|
4
|
B
|
Cocamidopropyl Betaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling) |
|
|
1
|
B
|
Acetamide MEA
(Hair Conditioning, Humectant, Foam Boosting, Viscosity Increasing Agent, Antistatic Agent, Skin Conditioning, Viscosity Controlling) |
|
|
2
|
A
|
Tetrasodium EDTA
(Chelating Agent) |
|
|
3
|
B
|
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling) |
Good for Dry Skin
|
|
1
|
|
Methyl Nicotinate
(External Analgesic, Fragrance, Skin Conditioning, Soothing, Tonic) |
|
|
|
Mentha Arvensis Leaf Oil
(Masking) |
|
|
|
|
PARFUM
(Fragrance, Perfuming) |
|
|
3
|
B
|
Polysorbate 80
(Denaturant, Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
3
|
B
|
Polysorbate 60
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
3
|
A
|
PEG-23M
(Binding Agent, Emulsion Stabilising, Viscosity Increasing Agent) |
|
|
|
|
Mentha Piperita Oil
(Fragrance, Perfuming, Refreshing, Tonic) |
|
|
6
|
|
Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
|
|
1
|
B
|
Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber) |
Good for Oily Skin
|
|
1
|
|
Cystine Bis-PG-Propyl Silanetriol
(Skin Conditioning) |
|
|
2
3
|
|
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient) |
|
|
3
|
|
Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
|
|
1
|
A
|
Biotin
(Hair Conditioning, Skin Conditioning, Antiseborrhoeic) |
|
|
|
|
Foeniculum Vulgare Fruit Extract
(Skin Conditioning, Skin Conditioning Emollient, Soothing, Tonic) |
|
|
1
2
|
A
|
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
|
|
|
|
citrus limon peel extract
(Skin Conditioning, Skin Conditioning Emollient, Skin Protecting, Tonic) |
|
|
|
|
Saccharum Officinarum Extract
(Moisturising, Skin Conditioning) |
|
|
|
|
Acer saccharum extract
(Skin Conditioning) |
|
|
|
|
Vaccinium Myrtillus Leaf Extract
(Astringent, Hair Conditioning, Nail Conditioning, Skin Conditioning) |
|
|
2
|
A
|
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
|
|
1
|
|
Yeast Extract
(Skin Conditioning) |
|
7
|
A
|
Propylparaben
(Fragrance, Preservative, Perfuming) |
Paraben
|
|
|
|
Citrus Aurantium Dulcis Fruit Extract
(Fragrance, Skin Conditioning) |
|
|
1
|
A
|
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding) |
|
|
4
|
A
|
Methylparaben
(Fragrance, Preservative) |
Paraben
|
|
3
|
A
|
Potassium Sorbate
(Fragrance, Preservative) |
|
|
4
|
A
|
Ethylparaben
(Fragrance, Preservative) |
Paraben
|
|
7
|
A
|
Butylparaben
(Fragrance, Preservative, Masking) |
Paraben
|
|
6
|
A
|
BHT
(Antioxidant, Fragrance, Masking) |
