OS-01 Hair Peptide Scalp Serum

Oneskin

OS-01 Hair Peptide Scalp Serum

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About this product

The Oneskin OS-01 Hair Peptide Scalp Serum is a misc. Our analysis of its 42 ingredients (36 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Misc
Ingredients
42
Low-risk
36
Fragrance
Fragrance-free
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 8/4
Good for dry skin
Erythritol Inulin Panax Ginseng Root Extract Caprylyl Glycol Butylene Glycol Sodium PCA Glycerin Hydrolyzed Soy Protein
Caution for dry skin
Disodium Succinate Alpha-Glucan Oligosaccharide Xanthan Gum Glycerin
Oily/Acne-Prone Skin No data
Sensitive Skin 3/9
Good for sensitive skin
Panax Ginseng Root Extract Glycerin Hydroxyacetophenone
Caution for sensitive skin
Disodium Succinate Raspberry Ketone Cellulose Gum Arginine Butylene Glycol Glycerin Citric Acid Sodium Benzoate Potassium Sorbate

Ingredients list

42 total
Lower hazard (1) Higher hazard (3)
All42 Skin Conditioning37 Hair Conditioning12 Fragrance11 Humectant10 Antistatic Agent7 Masking7 Solvent6 Film Forming4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
1,2-Hexanediol
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Hydroxyacetophenone
(Antioxidant)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
A
Inulin
(Humectant, Skin Conditioning)
Helianthus Annuus Sprout Extract
(Skin Conditioning)
1
A
Cellulose Gum
(Binding Agent, Emulsion Stabilising, Film Forming, Fragrance, Viscosity Increasing Agent, Binding, Masking, Viscosity Controlling)
1
Alpha-Glucan Oligosaccharide
(Cleansing, Skin Conditioning, Smoothing)
1
Tetrasodium Glutamate Diacetate
(Chelating Agent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
Morus Nigra Leaf Extract
(Skin Conditioning)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
Acetyl Tyrosine
(Skin Conditioning, Tanning)
1
Rehmannia Chinensis Root Extract
(Skin Conditioning, Tonic)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Erythritol
(Humectant, Moisturising)
Chondrus Crispus
(Fragrance, Skin Conditioning)
3
A
PEG-12 Dimethicone
(Hair Conditioning, Skin Conditioning)
Oryza Sativa Bran Water
(Fragrance, Perfuming)
Decapeptide-52
(Skin Conditioning)
1
Calcium Pantothenate
(Antistatic Agent, Hair Conditioning)
3
Zinc Gluconate
(Cosmetic Biocide, Skin Conditioning, Deodorant)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Ornithine HCL
(Skin Conditioning)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
A
Polyquaternium-11
(Antistatic Agent, Film Forming, Hair Fixing)
1
Citrulline
(Skin Conditioning)
A
Hydrolyzed Soy Protein
(Antistatic Agent, Hair Conditioning, Humectant, Skin Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Glucosamine HCl
(Ph Adjuster, Antistatic Agent, Hair Conditioning)
1
A
Disodium Succinate
(Fragrance, Masking, Surfactant)
Fisetin
(Cosmetic Colorant, Skin Conditioning)
1
Raspberry Ketone
(Fragrance, Skin Conditioning, Masking, Perfuming)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
A
Potassium Sorbate
(Fragrance, Preservative)
1
Arctium Majus Root Extract
(Skin Conditioning)
1
A
Panax Ginseng Root Extract
(Emollient, Hair Conditioning, Skin Protecting, Tonic)
1
A
Biotin
(Hair Conditioning, Skin Conditioning, Antiseborrhoeic)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Glycerin
Humectant, Skin Protecting
Butylene Glycol
Skin Conditioning, Humectant
Hydroxyacetophenone
Antioxidant
Panthenol
Skin Conditioning
Inulin
Humectant, Skin Conditioning
Helianthus Annuus Sprout Extract
Skin Conditioning

Benefits

Good for dry skin

Concerns

Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Hydroxyacetophenone
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 Antioxidant
Inulin
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A HumectantSkin conditioning
Helianthus Annuus Sprout Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Cellulose Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingFilm formingFragranceViscosity increasing agentBindingMaskingViscosity controlling
Alpha-Glucan Oligosaccharide
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CleansingSkin conditioningSmoothing
Tetrasodium Glutamate Diacetate
Chelating agent
Low-hazard ingredient.Read moreShow less
EWG 1 Chelating agent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Morus Nigra Leaf Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Arginine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Acetyl Tyrosine
Skin conditioning, Tanning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningTanning
Rehmannia Chinensis Root Extract
Skin conditioning, Tonic
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningTonic
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Erythritol
Humectant, Moisturising
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantMoisturising
+ 22 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin

How to use

How to use

  • 1 Morning & evening: Suitable for both AM and PM use.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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