COSRX
Skincare
Does it live up to its claims?
Evi Evidence
Promising
2 relevant studies reviewed
Review date not recorded
Report details / 01
The K-beauty hydration staple whose stretchy texture became a social-video fixture.
Claims audit / 02
Each claim is rated separately. Ingredient evidence does not prove that this finished product produces the same result.
Claim 01 / 96% snail secretion filtrate
Snail filtrate contains humectant glycosaminoglycans and bioactive proteins. Hydration is credible; scar and pigmentation evidence is much less certain.
See researchEvidence review / 03
Evi rates the research behind each claim. Unless an exact-product study is recorded, ingredient findings describe the ingredient—not proof that this finished formula produces the same result.
What we found
It behaves like a hydrating, soothing essence.
The dewy effect is real and immediate; repair claims need more human trials.
People with mollusk allergy or very reactive skin should patch test.
Evidence profile
What's in it
96% snail secretion filtrate
humectant · humectant, soothing
How direct is the evidence?
How the rating was reached
Promising
Evi never assigns numeric scores. The level follows fixed rules from recorded research, so the same evidence always gives the same result.
Independent summary
A strong hydration product with intriguing but not definitive repair evidence.
An evidence-focused interpretation—not a diagnosis or personalized medical treatment advice.
Source library / 04
Peer-reviewed sources reviewed for this report. Study population and sample details appear only when they are present in Evi's verified record.
Claim 01
Hydrates, repairs the barrier, and fades marks.
Biomolecules & biomedicine · 2024 · DOI 10.17305/bb.2024.11067
Early studies support hydrating and regenerative properties, but robust human trials remain sparse.
The Journal of clinical and aesthetic dermatology · 2020 · PMC7159309
A small study of a snail-based regimen reported smoother fine lines; it combined several ingredients, so snail's own effect can't be isolated.
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Alternatives / evidence compared
Matched on verified category, use, actives, formulation, claims, attributes, size, price and evidence. Relevance depends on the claim or use case—Evi does not name a universal winner.
What is similar?
Also skincare / Also for hydration / Also for skin barrier / Also for inflammation
What is different?
Different key active: Snail secretion filtrate, Sodium hyaluronate
Evidence for the relevant claim
For “Repairs the barrier, fades scars, heals everything.”: Promising — the same evidence level as the identified product’s closest claim.
What are you paying for?
No verified price is recorded.
02 / Glow Recipe
What is similar?
Also skincare / Also for hydration / Also for skin barrier / Comparable evidence-backed claim
What is different?
Different key active: Niacinamide
Evidence for the relevant claim
For “Brightens, supports the barrier, and minimizes pores.”: Strong — stronger evidence than the identified product’s closest claim.
What are you paying for?
No verified price is recorded.
03 / The Ordinary
What is similar?
Also skincare / Also for hydration / Also for skin barrier / Comparable evidence-backed claim
What is different?
Different key active: Multi-weight hyaluronic acid, Panthenol
Evidence for the relevant claim
For “Hydrates multiple layers and visibly plumps skin.”: Strong — stronger evidence than the identified product’s closest claim.
What are you paying for?
No verified price is recorded.
What is similar?
Also skincare / Also for skin barrier
What is different?
Different key active: Retinaldehyde, Niacinamide
Evidence for the relevant claim
No directly comparable claim is recorded; read each claim rating separately.
What are you paying for?
No verified price is recorded.
Using it / 05
A grounded starting point—not personalized medical advice.
Follow the product label and introduce one new product at a time so you can notice benefits or irritation.
Check the active ingredients and concentration, then compare the product’s claim with the evidence rating above.
Patch-test topical products and check supplements against medications, allergies, pregnancy, and existing conditions.
Purchase notes / verified retailers
Prices, sizes and availability appear only when Evi has a current retailer record. Retailers are listed in Evi's fixed order, never by commission. Check final details with the retailer.
Affiliate disclosure: Evi may earn a commission when you purchase through certain links. Affiliate relationships never affect Evi's evidence ratings.
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