OS-01 Prep
The Oneskin OS-01 Prep is a cleanser. Our analysis of its 16 ingredients (10 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to dry skin.
The Oneskin OS-01 Prep is a cleanser. Our analysis of its 16 ingredients (10 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to dry skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
|
|
|
Water
(Solvent) |
|
|
|
|
Sodium Laurylglucosides Hydroxypropylsulfonate
(Cleansing, Emulsifying, Foam Boosting, Hydrotrope, Surfactant) |
|
|
|
|
Cocamidopropyl Hydroxysultaine
(Antistatic Agent, Hair Conditioning, Skin Conditioning, Sufactant, Foam Boosting, Viscosity Increasing Agent, Viscosity Controlling) |
|
|
|
|
Disodium Lauryl Sulfosuccinate
(Sufactant, Foam Boosting, Hydrotrope, Foaming, Skin Conditioning) |
|
|
|
|
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
|
|
|
|
Sodium Hydroxypropylphosphate Laurylglucoside Crosspolymer
(Cleansing, Surfactant Cleansing, Surfactant Emulsifying, Surfactant Foam Boosting, Surfactant Hydrotrope) |
|
|
|
|
Sodium Grapeseedamidopropyl Pg-Dimonium Chloride Phosphate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansing) |
|
|
|
|
Hydrolyzed Opuntia Ficus-Indica Flower Extract
(Abrasive, Skin Protecting) |
|
|
|
|
Protium Heptaphyllum Resin
(Binding, Masking) |
|
|
|
|
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
|
|
|
|
Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
|
|
|
Lonicera Japonica Flower Extract
(Skin Conditioning) |
|
|
|
|
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
|
|
|
|
Sorbic Acid
(Fragrance, Preservative) |
|
|
|
|
Arnica Montana Extract
(Skin Conditioning) |
|
|
|
|
Tetrasodium Glutamate Diacetate
(Chelating Agent) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
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.
From the community
Used this product? Rate it in 10 seconds
Alternatives
Other products people analyze alongside this one.