Snail Truecica Miracle Repair Serum
Reviewed by SerumTruth Editorial · Price and formula checked July 2026
A likeable, budget-friendly pairing of two of K-beauty's most reliable comfort actives, snail mucin and centella, backed by a supporting dose of niacinamide. The '89%' marketing number is a combined complex figure rather than a single verified active percentage, and the evidence behind snail mucin and madecassoside is limited to moderate rather than strong, so read it as a soothing hydrator, not a corrective treatment. At this price it is an easy, low-risk add.
- Cheap to use, about $8 a month
- No active concentrations are disclosed
- Evidence18 / 30
Strength of the research behind the key actives
- Snail Mucin (Snail Secretion Filtrate): limited evidence
- Madecassoside: moderate evidence
- Niacinamide: moderate evidence
The average of the key actives’ evidence grades.
- Potency21 / 25
Dosed at studied levels, not fairy-dusted
- Snail Mucin (Snail Secretion Filtrate): dosed at a studied level
- Madecassoside: dosed at a studied level
- Niacinamide: dosed at a studied level
How strongly the actives are dosed, led by the strongest, not how many there are.
- Delivery & stability14 / 20
Delivery tech + packaging that protects fragile actives
- Delivery: standard
- Packaging: clear dropper
- No fragile actives here, so packaging barely moves the score.
Delivery tech plus packaging, and packaging only counts when actives are fragile.
- Formulation3 / 10
Disclosure, active breadth, and ingredient generation
- 0 of 3 actives disclose a concentration
- 3 key actives (breadth credit caps at 3)
- No current-generation or synergy bonus
Disclosure, active breadth, and current-generation or synergistic actives.
- Value15 / 15
What a month of use costs vs. the category
- About $8 per month to use
- $22 for 50 ml, used about twice a day (about 0.3 ml each time), so a bottle lasts about 2.8 months
What a month of use costs: full marks at $6 a month or less, the floor at $60 a month or more.
Tap any row to see how its score was built.
Ranks #49 of 84 hydration & barrier serums we have scored.
Affiliate links. We may earn a commission at no cost to you. It never changes our score.
What’s inside
| Active | Disclosed | Dose |
|---|---|---|
| Snail Mucin (Snail Secretion Filtrate) | n/a | Studied |
| Madecassoside | n/a | Studied |
| Niacinamide | n/a | Studied |
A snail mucin serum built on Some By Mi's Truecica complex, snail secretion filtrate paired with centella asiatica extract plus isolated madecassoside, alongside niacinamide, allantoin, adenosine and licorice root extract, in a translucent pump bottle. The brand markets the combined snail-plus-centella complex at 890,000ppm ('89%'), but the INCI does not break that figure into the snail and centella pieces separately, and niacinamide's own level is undisclosed. None of the three are fragile, so the clear pump is not a real weak point.
How it’s delivered
Air- and light-sensitive actives (vitamin C, copper peptides) lose potency fast in the wrong packaging, so delivery and the bottle are scored, not just what’s on the label.
The actives, explained
What the research says
A 12 week human trial found a snail secretion filtrate emulsion and serum helped photoaged facial skin look smoother and less wrinkled than placebo.
The Effects of Filtrate of the Secretion of the Cryptomphalus Aspersa on Photoaged Skin. Journal of Drugs in Dermatology, 2013. PubMed ↗
Over 6 months, a vitamin C and madecassoside cream was linked with smoother looking, firmer, more hydrated looking sun aged skin.
Clinical, biometric and structural evaluation of the long-term effects of a topical treatment with ascorbic acid and madecassoside in photoaged human skin. Experimental Dermatology, 2008. PubMed ↗
A study of the active, not this exact product. What matters for the score is whether this serum uses it at a comparable dose.
Higher-scoring alternatives
Same category, better SerumProof score. Worth a look before you buy.
Revision history
- July 11, 2026Price and formula rechecked
- July 10, 2026Review published
Spot an error or a reformulation? Tell us and we will fix it.
Cosmetic information for general education, not medical advice. The SerumProof score reflects our reading of publicly available research and formulation disclosures. See how scoring works.