COSRX Low pH Good Morning Gel Cleanser — Efficacy 3.3/5.0, Safety 4.3/5.0 | DemythSkin
++++
[ DemythSkin Verdict ]
COSRX Low pH Good Morning Gel Cleanser
COSRX

COSRX Low pH Good Morning Gel Cleanser

CleanserCleansing
Efficacy
Basic
3.3 / 5.0
Safety
Safe
4.3 / 5.0
System Verdict
A competent gentle cleanser—not a treatment product, and the tea tree oil adds unnecessary irritation risk. The efficacy score is 3.3/5 because the formula uses a mild amphoteric surfactant plus a mild sulfonate-type cleansing surfactant, and the stated pH of 5.31 ± 1.00 is appropriate for barrier-compatible cleansing. Betaine salicylate is present, but it appears near the end of the list and is rinsed off, so it should receive only limited contact-action credit rather than being treated as a meaningful acne or exfoliation treatment. Allantoin provides modest supportive skin conditioning, while the botanical extracts and ferment do not materially raise the cleansing efficacy score.
Active Ingredients Detected
A Tier: Good BasicsProven Results
Saccharomyces FermentAllantoinBetaine Salicylate
B Tier: Supporting IngredientsPromising Ingredients
Sodium Lauroyl Methyl IsethionateSodium ChlorideTrisodium Ethylenediamine Disuccinate
C Tier: Marketing IdolsHype | Limited or Weak Data
Styrax Japonicus Branch/Fruit/Leaf ExtractCryptomeria Japonica Leaf ExtractNelumbo Nucifera Leaf ExtractPinus Palustris Leaf ExtractUlmus Davidiana Root ExtractOenothera Biennis (Evening Primrose) Flower ExtractPueraria Lobata Root Extract
D Tier: Potential IrritantsBe Cautious
Melaleuca Alternifolia (Tea Tree) Leaf Oil
What Each Ingredient Does
Water
Primary solvent
Cocamidopropyl Betaine
Amphoteric cleansing surfactant
Sodium Lauroyl Methyl Isethionate
Mild cleansing surfactant
Sodium Chloride
Viscosity adjusting agent
Polysorbate 20
Solubilizing emulsifier
Styrax Japonicus Branch/Fruit/Leaf Extract
Botanical conditioning extract
Butylene Glycol
Humectant and solvent
Saccharomyces Ferment
Ferment conditioning ingredient
Cryptomeria Japonica Leaf Extract
Botanical conditioning extract
Nelumbo Nucifera Leaf Extract
Botanical conditioning extract
Pinus Palustris Leaf Extract
Botanical conditioning extract
Ulmus Davidiana Root Extract
Botanical conditioning extract
Oenothera Biennis (Evening Primrose) Flower Extract
Botanical conditioning extract
Pueraria Lobata Root Extract
Botanical conditioning extract
Melaleuca Alternifolia (Tea Tree) Leaf Oil
Aromatic botanical oil
Allantoin
Skin-conditioning ingredient
Caprylyl Glycol
Humectant and preservative booster
Ethylhexylglycerin
Preservative efficacy booster
Betaine Salicylate
Salicylate exfoliating agent
Citric Acid
pH adjusting agent
Ethyl Hexanediol
Solvent and preservative booster
1,2-Hexanediol
Solvent and humectant
Trisodium Ethylenediamine Disuccinate
Chelating agent
Sodium Benzoate
Preservative
Full Ingredient List (INCI)

Water, Cocamidopropyl Betaine, Sodium Lauroyl Methyl Isethionate, Sodium Chloride, Polysorbate 20, Styrax Japonicus Branch/Fruit/Leaf Extract, Butylene Glycol, Saccharomyces Ferment, Cryptomeria Japonica Leaf Extract, Nelumbo Nucifera Leaf Extract, Pinus Palustris Leaf Extract, Ulmus Davidiana Root Extract, Oenothera Biennis (Evening Primrose) Flower Extract, Pueraria Lobata Root Extract, Melaleuca Alternifolia (Tea Tree) Leaf Oil, Allantoin, Caprylyl Glycol, Ethylhexylglycerin, Betaine Salicylate, Citric Acid, Ethyl Hexanediol, 1,2-Hexanediol, Trisodium Ethylenediamine Disuccinate, Sodium Benzoate, Disodium EDTA

Frequently Asked

Is COSRX Low pH Good Morning Gel Cleanser worth it?

COSRX Low pH Good Morning Gel Cleanser scores 3.3 out of 5.0 for efficacy (Basic) and 4.3 out of 5.0 for safety (Safe) on DemythSkin's independent ingredient analysis. A competent gentle cleanser—not a treatment product, and the tea tree oil adds unnecessary irritation risk. The efficacy score is 3.3/5 because the formula uses a mild amphoteric surfactant plus a mild sulfonate-type cle

What are the key active ingredients in COSRX Low pH Good Morning Gel Cleanser?

COSRX Low pH Good Morning Gel Cleanser contains no gold-standard actives — its formula is built on supporting and base ingredients rather than clinically transformative actives.

Does COSRX Low pH Good Morning Gel Cleanser contain fragrance or known irritants?

DemythSkin flags these ingredients in COSRX Low pH Good Morning Gel Cleanser as potential irritants: Melaleuca Alternifolia (Tea Tree) Leaf Oil.

How is COSRX Low pH Good Morning Gel Cleanser scored?

DemythSkin grades every product on two independent axes: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are classified S through D against a database of over 3,000 compounds. No brand pays for a score.

Buy on Amazon →Analyze on DemythSkin →

Analysis last updated: 2026-10-03. DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score. DemythSkin earns commission from affiliate links (Amazon Associates and others). Scores are computed before any commercial relationship — the link follows the verdict, never the other way around.