Skin science article
COSRX Advanced Snail 96 Mucin Power Essence Versus iUNIK Black Snail Restore Serum
COSRX Advanced Snail 96 Mucin Power Essence Versus iUNIK Black Snail Restore Serum This hydrating essence is formulated around Snail Secretion Filtrate and Allantoin to hydrate skin and calm redness. This barrier-repair serum is formulated around Centella Asia
COSRX Advanced Snail 96 Mucin Power Essence Versus iUNIK Black Snail Restore Serum
This hydrating essence is formulated around Snail Secretion Filtrate and Allantoin to hydrate skin and calm redness.
This barrier-repair serum is formulated around Centella Asiatica Leaf Water and Niacinamide to strengthen the skin barrier and calm redness.
What's inside
Key Ingredients
Benefits
Ingredients Side-by-side
Snail Secretion Filtrate
Betaine
Butylene Glycol
1,2-Hexanediol
Sodium Polyacrylate
Phenoxyethanol
Sodium Hyaluronate
Allantoin
Ethyl Hexanediol
Carbomer
Panthenol
Arginine
Water
Snail Secretion Filtrate, Betaine, Butylene Glycol, 1,2-Hexanediol, Sodium Polyacrylate, Phenoxyethanol, Sodium Hyaluronate, Allantoin, Ethyl Hexanediol, Carbomer, Panthenol, Arginine, Water
Centella Asiatica Leaf Water
Glycerin
Niacinamide
Glycereth-26
Snail Extract
Scutellaria Baicalensis Root Extract
Polygonum Cuspidatum Root Extract
Oryza Sativa Extract
Coffea Arabica Seed Extract
Laminaria Japonica Extract
Sesamum Indicum Seed Extract
Solanum Melongena Fruit Extract
Dipotassium Glycyrrhizate
Camellia Sinensis Leaf Extract
Cynanchum Atratum Extract
Chamomilla Recutita Flower Extract
Rosmarinus Officinalis Leaf Extract
Centella Asiatica Extract
Adenosine
Ethylhexylglycerin
Xanthan Gum
Pentylene Glycol
Caprylyl Glycol
Water, Centella Asiatica Leaf Water, Glycerin, 1,2-Hexanediol, Butylene Glycol, Niacinamide, Glycereth-26, Snail Extract, Scutellaria Baicalensis Root Extract, Polygonum Cuspidatum Root Extract, Oryza Sativa Extract, Coffea Arabica Seed Extract, Laminaria Japonica Extract, Sesamum Indicum Seed Extract, Solanum Melongena Fruit Extract, Dipotassium Glycyrrhizate, Camellia Sinensis Leaf Extract, Cynanchum Atratum Extract, Chamomilla Recutita Flower Extract, Rosmarinus Officinalis Leaf Extract, Centella Asiatica Extract, Arginine, Carbomer, Adenosine, Ethylhexylglycerin, Sodium Polyacrylate, Xanthan Gum, Sodium Hyaluronate, Pentylene Glycol, Caprylyl Glycol
Reviews
Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.
It is a:
Humectant, drawing moisture into the skin
Emollient, helping to soften skin
Solvent, dispersing and stabilizing formulas
Preservative booster, enhancing the antimicrobial activity of other preservatives
Arginine is a semi-essential amino acid. This just means our bodies can product a bit on its own, but sometimes needs a little boost from food sources.
It is a part of your skin's natural moisturizing factor (NMF), or the water-loving molecules in your outermost layer of skin (stratum corneum) that keeps everything hydrated and happy.
Here's an interesting thing about Arginine: your skin converts it into urea through the Krebs-Henseleit urea cycle. Urea is one of the most effective humectants your skin naturally produces.
A clinical study showed applying 2.5% arginine hydrochloride to atopic dermatitis skin showed significant urea levels in the stratum corneum and improved moisture in just four weeks.
Arginine is also a precursor to nitric oxide; nitric oxide improves microcirculation and supports wound healing and collagen synthesis.
One study found that an amino acid complex containing Arginine reduced skin irritation, improved hydration, and accelerated skin repair in clinical / in-vivo studies.
Arginine itself is an amino acid and not a fatty acid, oil, or ester. On its own, it's not a direct food source for Malassezia, or the yeast that causes fungal acne.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture.
Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%.
It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier.
Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%.
A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions.
Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.
In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.
Interestingly, the size of the molecule affects its behavior:
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.
You'll typically see concentrations between 0.1-2% for this ingredient.
Sodium Polyacrylate is the sodium salt of polyacrylic acid. It is used as an absorber, emollient, and stabilizer.
This ingredient is a super-absorbent polymer - meaning it can absorb 100 to 1000 times its mass in water. As an emollient, Sodium Polyacrylate helps soften and soothe skin. Emollients work by creating a barrier to trap moisture in. This helps keep your skin hydrated.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!