The INKEY List Multi-Biotic Moisturizer Versus COSRX Advanced Snail 96 Mucin Power Essence

The INKEY List Multi-Biotic Moisturizer Versus COSRX Advanced Snail 96 Mucin Power Essence

This barrier-repair moisturizer is formulated around Inulin and Squalane to strengthen the skin barrier and hydrate skin.

This hydrating essence is formulated around Snail Secretion Filtrate and Allantoin to hydrate skin and calm redness.

What's inside

Key Ingredients

Benefits

Concerns

No concerns

Ingredients Side-by-side

Water

Inulin

Glycerin

Isoamyl Laurate

Propanediol

Squalane

Cetearyl Olivate

Sorbitan Olivate

Avena Sativa Kernel Oil

Phenoxyethanol

Yogurt Powder

Sodium Caproyl Prolinate

Carbomer

Isoamyl Cocoate

Benzyl Alcohol

Sodium Hyaluronate

Sodium Stearoyl Glutamate

Ethylhexylglycerin

Diglucosyl Gallic Acid

Trisodium Ethylenediamine Disuccinate

Dehydroacetic Acid

Polysorbate 60

Citric Acid

Heptapeptide-7

Lecithin

Potassium Sorbate

Sodium Benzoate

Xanthan Gum

Sorbitan Isostearate

Water, Inulin, Glycerin, Isoamyl Laurate, Propanediol, Squalane, Cetearyl Olivate, Sorbitan Olivate, Avena Sativa Kernel Oil, Phenoxyethanol, Yogurt Powder, Sodium Caproyl Prolinate, Carbomer, Isoamyl Cocoate, Benzyl Alcohol, Sodium Hyaluronate, Sodium Stearoyl Glutamate, Ethylhexylglycerin, Diglucosyl Gallic Acid, Trisodium Ethylenediamine Disuccinate, Dehydroacetic Acid, Polysorbate 60, Citric Acid, Heptapeptide-7, Lecithin, Potassium Sorbate, Sodium Benzoate, Xanthan Gum, Sorbitan Isostearate

Snail Secretion Filtrate

Betaine

Butylene Glycol

1,2-Hexanediol

Sodium Polyacrylate

Allantoin

Ethyl Hexanediol

Panthenol

Arginine

Snail Secretion Filtrate, Betaine, Butylene Glycol, 1,2-Hexanediol, Sodium Polyacrylate, Phenoxyethanol, Sodium Hyaluronate, Allantoin, Ethyl Hexanediol, Carbomer, Panthenol, Arginine, Water

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Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

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.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

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.

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!

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