Cosrx ONE STEP PIMPLE CLEAR KIT ingredients list

Ingredients overview

Label order. Colour is our internal rating: green routine, yellow restricted or worth a look, red prohibited or high-risk, grey not yet decoded.

Ingredients are listed in label order; the order reflects the label only, not exact concentrations.

1. Water
2. Cocamidopropyl Betaine
3. Sodium Lauroyl Methyl Isethionate
4. Polysorbate 20
5. Styrax Japonicus Branch/Fruit/Leaf Extract
6. Butylene Glycol
7. Saccharomyces ferment
8. Cryptomeria Japonica Leaf Extract
9. Nelumbo Nucifera Leaf Extract
10. Pinus Palustris Leaf Extract
11. Ulmus Davidiana Root Extract
12. Oenothera Biennis Flower Extract
13. Pueraria Lobata Root Extract
14. Melaleuca alternifolia leaf oil
15. Allantoin
16. Caprylyl Glycol
17. Ethylhexylglycerin
18. Betaine Salicylate
19. Citric Acid
20. Ethyl Hexanediol
21. 1,2-Hexanediol
22. Trisodium Ethylenediamine Disuccinate
23. Sodium Benzoate
24. Disodium EDTA
25. Salix Alba Bark Water
26. Glycerin
27. Panthenol
28. Arginine
29. PEG-60 Hydrogenated Castor Oil
30. Sodium Hyaluronate
31. Citrus Aurantium Dulcis Peel Oil
32. Sodium Hydroxide
33. Red Ginseng Water
34. Snail Secretion Filtrate
35. Methylpropanediol
36. Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
37. Sodium Polyacrylate
38. Phenoxyethanol

Highlights

Free of parabensFree of siliconesFree of sulfatesFree of mineral oilFree of formaldehyde releasersContains PEGContains essential oilsContains EU-26 allergensContains fragranceContains alcoholContains animal-derived

Key ingredients

ANTIPLAQUE

Water

ANTISTATIC

Cocamidopropyl Betaine

CLEANSING

Sodium Lauroyl Methyl Isethionate

SURFACTANT - EMULSIFYING

Polysorbate 20

HUMECTANT

Butylene GlycolCryptomeria Japonica Leaf Extract

SKIN CONDITIONING

Saccharomyces fermentNelumbo Nucifera Leaf Extract

Other ingredients

Styrax Japonicus Branch/Fruit/Leaf ExtractPinus Palustris Leaf ExtractUlmus Davidiana Root ExtractOenothera Biennis Flower ExtractPueraria Lobata Root ExtractMelaleuca alternifolia leaf oilAllantoinCaprylyl GlycolEthylhexylglycerinBetaine SalicylateCitric AcidEthyl Hexanediol1,2-HexanediolTrisodium Ethylenediamine DisuccinateSodium BenzoateDisodium EDTASalix Alba Bark WaterGlycerinPanthenolArgininePEG-60 Hydrogenated Castor OilSodium HyaluronateCitrus Aurantium Dulcis Peel OilSodium HydroxideRed Ginseng WaterSnail Secretion FiltrateMethylpropanediolHydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate CopolymerSodium PolyacrylatePhenoxyethanol

Skim through

Ingredients explained

Water

Primary solvent and base; requires preservative system to prevent microbial growth

Cocamidopropyl Betaine

Cocamidopropyl betaine; zwitterionic co-surfactant reducing irritation and boosting foam, common in mild cleansers.

Sodium Lauroyl Methyl Isethionate

Mild anionic surfactant at 0.5–10%; fine foam, lower irritation than soaps, suitable for gentle cleansing.

Polysorbate 20

Non-ionic emulsifier and cleansing surfactant; contains PEG, control microbial load.

Styrax Japonicus Branch/Fruit/Leaf Extract

Not decoded yet

Butylene Glycol

Polyol humectant and solvent at 1–5%; aids solubilization, light feel

Saccharomyces ferment

Yeast ferment extract with amino acids; skin conditioning agent for texture improvement, ferment filtrates may sensitize

Cryptomeria Japonica Leaf Extract

Cryptomeria leaf extract, humectant & antioxidant; water-soluble, add at low temp to preserve.

Nelumbo Nucifera Leaf Extract

Herbal extract for soothing; limited data, patch test recommended, avoid metal ions.

Pinus Palustris Leaf Extract

Longleaf pine needle extract for toning; contains essential oils, allergen risk for sensitive skin.

Ulmus Davidiana Root Extract

Plant extract for basic skin conditioning; low usage, ensure raw material consistency

Oenothera Biennis Flower Extract

Evening primrose flower extract acting as an astringent; generally safe at standard formulation levels.

Pueraria Lobata Root Extract

Kudzu root extract as humectant; contains isoflavones, limit dose due to endocrine activity.

Melaleuca alternifolia leaf oil

Tea tree oil, antibacterial and sebum regulating; highly sensitizing at concentrate level, dilute; avoid on broken skin.

Allantoin

Skin soother at 0.5-2%; promotes cell regeneration

Caprylyl Glycol

Polyol conditioner and preservative booster at 0.5–3%; emollient feel, often paired with 1,2-hexanediol

Ethylhexylglycerin

Mild conditioner and preservative booster at 0.5–1%; reduces preservative load, smooth feel

Betaine Salicylate

Salicylate derivative for keratolytic and antimicrobial action; milder than salicylic acid.

Citric Acid

Buffer and chelator at 0.1–2%; adjusts pH, may irritate sensitive skin at low pH

Ethyl Hexanediol

Polyol solvent with humectant and mild preservative boost; low viscosity, compatible with many ingredients, gentle.

1,2-Hexanediol

Polyol solvent and preservative booster at 1–5%; light feel, can replace some traditional preservatives

Trisodium Ethylenediamine Disuccinate

Mild chelator replacing EDTA; water-soluble, very low irritation, stabilizes metal ions

Sodium Benzoate

Preservative booster, effective below pH 4.5; combinable with sorbates

Disodium EDTA

Chelating agent at 0.05–0.5%; sequesters metal ions for stability, boosts preservative efficacy

Salix Alba Bark Water

White willow bark water, salicylate precursor, keratolytic/astringent, low-dose soothing, avoid on broken skin

Glycerin

Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives

Panthenol

Panthenol (vitamin B5) at 1–5%; moisturizing and reparative, supports barrier recovery

Arginine

Arginine for moisturizing/conditioning; amino acid, high biocompatibility, often used in blends.

PEG-60 Hydrogenated Castor Oil

Non-ionic emulsifier and solubilizer at 1–5%; contains PEG, check acid compatibility and sensitive skin irritation

Sodium Hyaluronate

Potent humectant at 0.1–2%; different MW for penetration depth, high levels may draw moisture

Citrus Aurantium Dulcis Peel Oil

Sweet orange peel essential oil, citrus aroma; photosensitive, be careful in daytime; irritating at high levels.

Sodium Hydroxide

Strong base neutralizer for pH adjustment; handle with extreme care

Red Ginseng Water

Not decoded yet

Snail Secretion Filtrate

Snail secretion filtrate with moisturizing and repairing peptides; animal-derived, monitor purity and allergy risk

Methylpropanediol

Diol solvent and extraction carrier; enhances solubility of actives, low irritation profile.

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

High-molecular-weight thickener and emulsion stabilizer; requires electrolytes or acid adjustment near isoelectric point for optimal performance.

Sodium Polyacrylate

Superabsorbent resin, <1%; gels with electrolytes, ionic strength control required.

Phenoxyethanol

Broad-spectrum preservative at ≤1%; may irritate sensitive eye areas, often paired with ethylhexylglycerin