The quick version: The “96” in COSRX’s Advanced Snail 96 Mucin Power Essence refers to the share of the formula that is snail secretion filtrate, which the brand lists as 96.3%. That filtrate is itself mostly water, so the number tells you how snail-forward the recipe is, not how much active material you’re getting. The “92” in the brand’s All in One Cream works the same way.
The Snail 96 Mucin Power Essence is one of the best-known K-beauty products in the US, and its name has trained shoppers to read snail percentages like a strength rating. A 96% essence sounds stronger than a 40% serum, and a 92% cream sounds almost as potent. The math doesn’t work that way, and understanding why makes it much easier to compare snail products on any shelf.
What’s inside
What “96%” means in the Snail 96 Mucin Power Essence
On its US product page, COSRX lists the key ingredients of the Advanced Snail 96 Mucin Power Essence as “96.3 percent snail secretion filtrate” and “1,000 ppm sodium hyaluronate” (COSRX). Two things follow from that.
- The 96% is a recipe share. Of every 100 grams of essence, about 96 grams are the snail filtrate as the supplier delivers it. The remaining roughly 4% holds everything else: humectants, the sodium hyaluronate, pH adjusters and preservatives.
- 1,000 ppm equals 0.1%. Parts per million is just another unit, and the figure looks large only because of it.
The brand also describes the product as “clinically proven,” and its fact sheet says the testing was done by a Korean lab over about two weeks in 2025 with 20 adult participants. That’s a brand-commissioned consumer test, which is common in the industry, and it’s not the same as a peer-reviewed trial. For what independent and published research shows about snail ingredients, see our breakdown of snail mucin benefits.
Filtrate is mostly water
“Snail secretion filtrate” is the ingredient name for snail mucus that has been collected and filtered. Cleveland Clinic describes snail mucin as mostly water, with smaller amounts of hyaluronic acid, glycolic acid, allantoin and proteins (Cleveland Clinic).
A 2024 laboratory analysis in Scientific Reports put numbers on that. Across four commercial snail secretion filtrates, the dry residue (everything left when the water is removed) ranged from about 0.8% to 2.5%. Protein content and quality varied with the collection method: gently, manually stimulated filtrate had the most intact protein, while acid-stimulated filtrates had less (Di Filippo et al., 2024).
Apply that range as an illustration: if a filtrate resembled the samples in that study, a formula that is 96% filtrate would contain roughly 0.8 to 2.4% snail-derived solids. We don’t know the solids content of any specific brand’s filtrate, because brands don’t publish it. The point is the order of magnitude. A “96%” essence is a water-based gel with a small amount of snail-derived material, which is exactly why it feels so light.
| Number on the label | What it describes | What it doesn’t tell you |
|---|---|---|
| 96% / 96.3% (essence) | Share of the formula that is snail secretion filtrate, per the brand | How concentrated that filtrate is, or its protein content |
| 92% (cream) | Share of the cream that is snail filtrate, per the brand | How the remaining 8% changes texture and feel |
| 8% / 40% (clinical studies) | Concentration of a standardized secretion of one snail species | Whether a K-beauty filtrate is equivalent |
| 1,000 ppm | 0.1% of the formula | Anything about potency on its own |
Worth remembering
- “96%” and “92%” are the share of filtrate in the formula, not the strength of an active.
- Commercial snail filtrates studied in 2024 were about 97.5 to 99% water.
- Percentages from different brands, or from clinical studies, aren’t directly comparable.
- Texture, ingredient list and how your skin responds matter more than the headline number.
What “92%” means in a cream
COSRX describes its Advanced Snail 92 All in One Cream as made “with 92% snail mucin” (COSRX). It’s fair to wonder how a cream can be 92% of anything watery and still feel like a cream. The answer is that the remaining 8% does the structural work: thickeners, emollients and gelling agents give a water-based liquid its body. So the 92 cream is best understood as a lightweight gel-cream built on snail filtrate, rather than a richer version of the essence.
That has practical consequences. People with dry skin often find a 92%-style gel-cream too light to use as their only moisturizer in winter, while people with oily skin may like it as a single step. If you want help choosing between formats, our guide to snail mucin essence, serum or mask compares them by skin type.
Why snail percentages don’t compare across products
The two best-known clinical studies on snail secretion used a standardized secretion of the garden snail Cryptomphalus aspersa at much lower stated levels. A 2013 split-face trial used an 8% emulsion and a 40% serum (Fabi et al., 2013), and a 2020 post-laser study used a 40% product (Truchuelo and Vitale, 2020). Neither result proves that a 96% K-beauty essence works better, or worse, than those products. The snails, collection methods and filtrate concentrations are different, so the percentages measure different things.
A 2024 review of snail ingredients made the same point more broadly: most snail studies are preclinical or small, and larger trials are needed before firm claims can be made (Singh et al., 2024). Until a study tests a specific formula, any percentage is a description of a recipe, not proof of an effect.
What to check instead of the percentage
US cosmetic labels must list ingredients in descending order of predominance, with ingredients at 1% or less allowed in any order at the end (FDA). Exact percentages aren’t required, which is why a brand that does publish one is choosing to market it. When comparing snail products, look at:
- Position on the list. Snail secretion filtrate listed first means it’s the largest ingredient. That’s all a headline percentage really confirms.
- What else is in the top five. Glycerin, butylene glycol, panthenol or allantoin change how hydrating and soothing a formula feels.
- Fragrance and essential oils. If your skin is reactive, these matter more than whether a product is 92% or 96% snail.
- Texture for your skin type. A thin essence suits oily skin; dry skin usually needs a cream on top.
Our guide to reading Korean skincare labels covers the Korean-language side of the packaging, and the snail mucin pillar explains how the ingredient is collected.
Check with a dermatologist if
- Any snail product causes hives, swelling or a rash beyond the application area.
- Breakouts worsen steadily after you start a new snail essence or cream.
- You’re hoping a high-percentage product will treat acne, scarring or melasma; those conditions have medical options worth discussing.
Frequently asked questions
Is 96% snail mucin better than 92%?
Not in any measurable way that’s been published. Both numbers describe the share of filtrate in different product types, an essence and a cream. Choose based on the texture your skin needs.
What is the Snail 96 Mucin Power Essence good for?
It’s a lightweight hydrating essence. Published research on snail ingredients supports hydration best, with smaller, less certain evidence for fine lines and texture. Claims beyond that come mainly from brand testing.
Is 96% snail mucin pure snail slime?
No. It’s 96% filtered snail secretion as supplied to the manufacturer, and that filtrate is itself mostly water. The rest of the formula adds humectants, preservatives and pH adjusters.
Can I use the 96 essence and the 92 cream together?
Yes, essence first, cream second. Just know you’re layering two water-based snail products; dry skin may still need a richer moisturizer, and oily skin may only need one of the two.
Why don’t all brands list a snail percentage?
US labeling rules require ingredients in descending order, not exact percentages. Publishing a number is a marketing choice, so a product without one isn’t necessarily weaker.
Sources
- COSRX. “Advanced Snail 96 Mucin Power Essence” (product page and fact sheet). COSRX. cosrx.com
- COSRX. “Advanced Snail 92 All in One Cream” (product page). COSRX. cosrx.com
- Di Filippo MF, Dolci LS, Bonvicini F, et al. “Influence of the extraction method on functional properties of commercial snail secretion filtrates.” Scientific Reports, 2024. pmc.ncbi.nlm.nih.gov
- Cleveland Clinic. “Snail Mucin: What It Is and Benefits for Skin.” Health Essentials. health.clevelandclinic.org
- Fabi SG, Cohen JL, Peterson JD, Kiripolsky MG, Goldman MP. “The Effects of Filtrate of the Secretion of the Cryptomphalus Aspersa on Photoaged Skin.” Journal of Drugs in Dermatology, 2013. pubmed.ncbi.nlm.nih.gov
- Truchuelo MT, Vitale M. “A cosmetic treatment based on the secretion of Cryptomphalus aspersa 40% improves the clinical results after the use of nonablative fractional laser in skin aging.” Journal of Cosmetic Dermatology, 2020. pmc.ncbi.nlm.nih.gov
- Singh N, Brown AN, Gold MH. “Snail extract for skin: A review of uses, projections, and limitations.” Journal of Cosmetic Dermatology, 2024. pubmed.ncbi.nlm.nih.gov
- U.S. Food and Drug Administration. “Cosmetics Labeling Guide.” FDA. fda.gov
This guide is general information, not medical advice. If a product irritates your skin, stop using it and check with a dermatologist.