Skin science article
Cetaphil Hydrating Eye Gel Cream Versus The INKEY List Caffeine Eye Cream
Cetaphil Hydrating Eye Gel Cream Versus The INKEY List Caffeine Eye Cream This calming eye moisturizer is formulated around Niacinamide and Sodium Hyaluronate to calm redness and hydrate skin. This anti-aging eye moisturizer is formulated around Caffeine and P
Cetaphil Hydrating Eye Gel Cream Versus The INKEY List Caffeine Eye Cream
This calming eye moisturizer is formulated around Niacinamide and Sodium Hyaluronate to calm redness and hydrate skin.
This anti-aging eye moisturizer is formulated around Caffeine and Palmitoyl Tetrapeptide-7 to soften the look of wrinkles.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Cyclopentasiloxane
Dimethicone Crosspolymer
Glycerin
Hdi/Trimethylol Hexyllactone Crosspolymer
Butylene Glycol
Octyldodecanol
Dihydroxyisopropyl Capryloylcaprylamide
Niacinamide
Polysorbate 80
Sodium Hyaluronate
Sodium Polyacrylate
Tocopheryl Acetate
Portulaca Oleracea Extract
Crithmum Maritimum Extract
Glycyrrhiza Glabra Root Extract
Camellia Sinensis Leaf Extract
Poria Cocos Extract
Vitis Vinifera Seed Oil
Camellia Sinensis Seed Oil
Limnanthes Alba Seed Oil
Hydrogenated Vegetable Oil
Sorbitan Olivate
Sucrose Cocoate
Caprylyl Glycol
Bisabolol
Dimethicone
Cetyl Palmitate
Sorbitan Palmitate
Serine
Phytosterols
Alanine
Glycine
Trideceth-6
Caprylic/Capric Triglyceride
Sodium Carboxymethyl Beta-Glucan
Myristoyl/Palmitoyl Oxostearamide/Arachamide Mea
Biotinoyl Hexapeptide-2 Amide
Ammonium Acryloyldimethyltaurate/Vp Copolymer
PEG/PPG-18/18 Dimethicone
Xanthan Gum
Silica
Glyceryl Stearate
Sorbitan Stearate
Phenoxyethanol
Polyvinyl Alcohol
Cetearyl Alcohol
Stearic Acid
Citric Acid
Parfum
Water, Cyclopentasiloxane, Dimethicone Crosspolymer, Glycerin, Hdi/Trimethylol Hexyllactone Crosspolymer, Butylene Glycol, Octyldodecanol, Dihydroxyisopropyl Capryloylcaprylamide, Niacinamide, Polysorbate 80, Sodium Hyaluronate, Sodium Polyacrylate, Tocopheryl Acetate, Portulaca Oleracea Extract, Crithmum Maritimum Extract, Glycyrrhiza Glabra Root Extract, Camellia Sinensis Leaf Extract, Poria Cocos Extract, Vitis Vinifera Seed Oil, Camellia Sinensis Seed Oil, Limnanthes Alba Seed Oil, Hydrogenated Vegetable Oil, Sorbitan Olivate, Sucrose Cocoate, Caprylyl Glycol, Bisabolol, Dimethicone, Cetyl Palmitate, Sorbitan Palmitate, Serine, Phytosterols, Alanine, Glycine, Trideceth-6, Caprylic/Capric Triglyceride, Sodium Carboxymethyl Beta-Glucan, Myristoyl/Palmitoyl Oxostearamide/Arachamide Mea, Biotinoyl Hexapeptide-2 Amide, Ammonium Acryloyldimethyltaurate/Vp Copolymer, PEG/PPG-18/18 Dimethicone, Xanthan Gum, Silica, Glyceryl Stearate, Sorbitan Stearate, Phenoxyethanol, Polyvinyl Alcohol, Cetearyl Alcohol, Stearic Acid, Citric Acid, Parfum
Dicaprylyl Carbonate
Propanediol
Polyglyceryl-6 Distearate
Cetyl Alcohol
Glyceryl Behenate
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Jojoba Esters
Albizia Julibrissin Bark Extract
Squalane
Caffeine
Polyglyceryl-3 Beeswax
Phospholipids
Ethylhexylglycerin
Glycine Soja Oil
Polysorbate 60
Sodium Phytate
Glycolipids
Sorbitan Isostearate
Glycine Soja Sterols
Leuconostoc/Radish Root Ferment Filtrate
Hyaluronic Acid
Sodium Benzoate
Tocopherol
Carbomer
Darutoside
Sodium Lactate
Polysorbate 20
Palmitoyl Tetrapeptide-7
Palmitoyl Tripeptide-1
Water, Glycerin, Dicaprylyl Carbonate, Propanediol, Polyglyceryl-6 Distearate, Cetyl Alcohol, Glyceryl Behenate, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Albizia Julibrissin Bark Extract, Squalane, Caffeine, Polyglyceryl-3 Beeswax, Phospholipids, Ethylhexylglycerin, Xanthan Gum, Glycine Soja Oil, Polysorbate 60, Sodium Phytate, Glycolipids, Sorbitan Isostearate, Butylene Glycol, Citric Acid, Glycine Soja Sterols, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Sodium Benzoate, Tocopherol, Carbomer, Darutoside, Sodium Lactate, Polysorbate 20, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1
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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.
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.
Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.
Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.
Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.
In skincare formulas, citric acid can:
While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.
Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.
Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.
However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.
Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
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.
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!
Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.