CHAMGAP
VERIFIEDPassed the Codex final verification and publication gate. Evidence-verification cutoff: 2026-07-23. AI was used for research and drafting; the existence of all 2 cited sources was verified at the original page, followed by blind grading, adversarial audit, and build validation. Methodology v1.0.
Verdict No. 1329 · Search date 2026-07-23 · Methodology v1.0

Snail secretion filtrate,
does it really help with Reduced inflammatory mask-acne lesions and improved post-acne skin recovery?

30-Second Summary
D
Evidence Grade D · 25 · Safety caution
A small combination-serum trial suggests fewer inflammatory lesions, but snail mucin alone and post-acne recovery remain unproven
Adverse effects were mild and uncommon in the trial, but stinging, erythema, and contact allergy may occur. Sensitive skin should be patch-tested, and use should stop if the condition worsens.
What the
research shows
Snail secretion filtrate alone is rated D for reducing inflammatory mask-acne lesions and improving post-acne recovery. In a randomized double-blind trial of 66 participants, a serum containing 40% snail secretion filtrate, 4% calendula, and 2% licorice reduced inflammatory lesions more than placebo, while noninflammatory lesions, skin biophysics, and satisfaction did not differ. There was no snail-only arm, so the combination effect cannot be attributed to snail filtrate, and the trial did not directly test post-acne erythema, pigmentation, or scar recovery. Nonattributable combination evidence and lack of a direct recovery endpoint give D with 25 points.
What the
ads claim
Marketing converts a three-ingredient serum result into an acne and regeneration effect of snail mucin alone and extends it to untested acne marks and scar repair.
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Useful facts when choosing a product

  • Snail secretion filtrate is a filtered and processed cosmetic raw material used in moisturizers, essences, and serums; concentration and processing vary by product.
  • The mask-acne study tested a combination of 40% snail secretion filtrate, 4% calendula, and 2% licorice.
  • It is not a standard acne medicine; persistent inflammatory acne or risk of scarring warrants evidence-based treatment such as benzoyl peroxide or a retinoid under appropriate guidance.
  • Tolerability is generally favorable, but stinging, redness, or contact allergy can occur; sensitive users should patch test and stop if a reaction develops.
ID

Chamgap Semantic Classification Code

Candidate index · review held

UNK.snail-secretion-filtrate.UNK.inflammatory-mask-acne-lesions-and-improved-post-acne-skin-recovery.reduce.placebo

Unknown > Snail secretion filtrate > Unknown > inflammatory mask-acne lesions and improved post-acne skin recovery > Reduction claim > Placebo

An automated migration candidate, not an issued permanent code; exact claim scope remains under review. This machine-generated migration candidate helps retrieval but is not a permanent assignment. The original verdict ID and URL remain authoritative.

Download semantic index (JSON) · Codebook v1

Gap Measurement · Verdict 1329 · D 25
What advertising claims
What independent, higher-quality research supports
△ GAP
01

What the research actually shows

Puaratanaarunkon and colleagues randomized 66 participants with mild-to-moderate mask acne under double masking to a serum containing 40% snail secretion filtrate, 4% Calendula officinalis, and 2% Glycyrrhiza glabra or placebo twice daily for 12 weeks. The coefficient for percentage change in inflammatory lesions in the mask-covered area was -33.89 (95% CI -65.24 to -2.53). Noninflammatory lesions, sebum, corneometry, transepidermal water loss, erythema, and satisfaction showed no significant between-group differences. Reviews of snail-based skin products identify few heterogeneous clinical studies and frequent multi-ingredient formulations, limiting ingredient-level attribution.

02

Why this is classified as D (25)

The positive inflammatory-lesion signal in a 66-participant trial is accepted, but there was no snail-only arm, several skin outcomes were null, and post-acne recovery was not directly measured. Nonattributable combination evidence and the small sample support D with 25 points.

Counterpoint. A finished combination product may be considered only as an adjunctive cosmetic. Delaying effective inflammation control can increase the risk of pigmentation and scarring.

Rejudgment record. Cross-check applied — Applied D because the positive inflammatory-lesion signal came from a 66-participant serum combining snail secretion filtrate, calendula, and licorice, preventing single-ingredient attribution, while noninflammatory lesions and skin biophysics were null and post-acne recovery was not directly tested

Sub-claim grades by effect

This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.

Effect (sub-claim)GradeBasis
Reduced inflammatory mask-acne lesionsDA 66-participant combination-serum trial was positive, but the effect cannot be attributed to snail filtrate alone.
Improved post-acne skin recoveryDNo snail-only intervention directly evaluated recovery of post-acne erythema, pigmentation, or scarring.
Anti-acne efficacy of snail secretion filtrate aloneDConcurrent calendula and licorice prevent isolation of the ingredient-specific contribution.

Cross-check — AI research and Codex final gate

AI was used for research and drafting. Blind grading, adversarial audit, and the methodology boundary rules were then reapplied before Codex performed the final evidence, grade, copy, and build checks. If a grade cannot be narrowed, both evidence positions and their reasons are published.
03

Evidence Table

StudyDesignSampleFundingEndpointResultWeight
Puaratanaarunkon T et al. 2022Randomized double-blind placebo-controlled 12-week trial66Inadequately reported in the public abstractAcne lesion count, IGEA, sebum, hydration, TEWL, erythema, and satisfactionThe combination serum reduced inflammatory lesions more, while noninflammatory lesions, skin biophysics, and satisfaction did not differ.Small direct combination-product randomized trial
Rashad M et al. 2025 reviewNarrative review of health and cosmetic applications of snail slimeAcademic literature reviewSkin regeneration, anti-inflammatory and antioxidant activity, and cosmetic clinical applicationsMechanistic and early cosmetic signals exist, but clinical formulations are heterogeneous and single-ingredient acne evidence is limited.Evidence-gap and heterogeneity assessment
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Receipt — 2 References

All 2 cited sources were verified for existence at the original page (as of 2026-07-23).

Puaratanaarunkon T, Washrawirul C, Chuenboonngarm N, et al. Efficacy and safety of a facial serum containing snail secretion filtrate, Calendula officinalis, and Glycyrrhiza glaba root extract in the treatment of maskne: A randomized placebo-controlled study. J Cosmet Dermatol. 2022;21(10):4470-4478. PMID: 35763437. DOI: 10.1111/jocd.15190.
checked
Rashad M, Sampò S, Cataldi A, Zara S. From Nature to Nurture: The Science and Applications of Snail Slime in Health and Beauty. J Cosmet Dermatol. 2025;24(2):e70002. PMID: 39973020. PMCID: PMC11840295. DOI: 10.1111/jocd.70002.
checked
Research and draft: AI used · Cross-check: blind grading and adversarial audit
Final verification and publication gate: Codex · Verification cutoff: 2026-07-23 · Corrections: none

Cite this verdict

Snail secretion filtrate x fewer inflammatory mask-acne lesions and improved post-acne recovery Evidence Grade D card
[Chamgap] Snail secretion filtrate x fewer inflammatory mask-acne lesions and improved post-acne recovery — Evidence Grade D·25. 2 cited sources checked. Source: https://chamgap.com/en/verdicts/skin-hair/snail-secretion-filtrate-maskne-inflammatory-lesions-post-acne-recovery/ · CC BY 4.0

CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.

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What this document does and does not do

Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.