Skin science article
Cetaphil Healthy Renew Eye Gel Serum Versus CeraVe Skin Renewing Vitamin C Eye Cream
Cetaphil Healthy Renew Eye Gel Serum Versus CeraVe Skin Renewing Vitamin C Eye Cream This anti-aging eye moisturizer is formulated around Panthenol and Niacinamide to soften the look of wrinkles and strengthen the skin barrier. This anti-aging eye moisturizer
Cetaphil Healthy Renew Eye Gel Serum Versus CeraVe Skin Renewing Vitamin C Eye Cream
This anti-aging eye moisturizer is formulated around Panthenol and Niacinamide to soften the look of wrinkles and strengthen the skin barrier.
This anti-aging eye moisturizer is formulated around Ascorbic Acid and Ceramide NP to soften the look of wrinkles and brighten dull-looking skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Glycerin
Propanediol
Panthenol
1,2-Hexanediol
Niacinamide
C13-15 Alkane
Butyrospermum Parkii Butter
Cocos Nucifera Oil
Sodium Polyacryloyldimethyl Taurate
Hydrogenated Polydecene
Silica
Tocopheryl Acetate
Vinyldimethicone
C14-22 Alcohols
Leontopodium Alpinum Extract
Polyglyceryl-2 Stearate
Polyacrylate-13
C12-20 Alkyl Glucoside
Oryza Sativa Lees Extract
Glyceryl Stearate
Stearyl Alcohol
Polyisobutene
Hydrolyzed Soy Flour
Adenosine
Dimethicone/Vinyl Dimethicone Crosspolymer
Butylene Glycol
Trisodium Ethylenediamine Disuccinate
Acacia Senegal Gum
Citric Acid
Agar
Caprylyl Glycol
Polysorbate 20
Sodium Benzoate
Sorbitan Isostearate
Potassium Sorbate
Sodium Hyaluronate
Xanthan Gum
Ethylhexylglycerin
Buddleja Davidii Extract
Thymus Vulgaris Extract
Water, Glycerin, Propanediol, Panthenol, 1,2-Hexanediol, Niacinamide, C13-15 Alkane, Butyrospermum Parkii Butter, Cocos Nucifera Oil, Sodium Polyacryloyldimethyl Taurate, Hydrogenated Polydecene, Silica, Tocopheryl Acetate, Vinyldimethicone, C14-22 Alcohols, Leontopodium Alpinum Extract, Polyglyceryl-2 Stearate, Polyacrylate-13, C12-20 Alkyl Glucoside, Oryza Sativa Lees Extract, Glyceryl Stearate, Stearyl Alcohol, Polyisobutene, Hydrolyzed Soy Flour, Adenosine, Dimethicone/Vinyl Dimethicone Crosspolymer, Butylene Glycol, Trisodium Ethylenediamine Disuccinate, Acacia Senegal Gum, Citric Acid, Agar, Caprylyl Glycol, Polysorbate 20, Sodium Benzoate, Sorbitan Isostearate, Potassium Sorbate, Sodium Hyaluronate, Xanthan Gum, Ethylhexylglycerin, Buddleja Davidii Extract, Thymus Vulgaris Extract
Ascorbic Acid
Dimethicone
Caprylic/Capric Triglyceride
Cetearyl Alcohol
Glyceryl Isostearate
Sodium Hydroxide
PEG-100 Stearate
Dipotassium Glycyrrhizate
Hydrogenated Jojoba Oil
Ceramide NP
Ceramide AP
Ceramide EOP
Carbomer
Copernicia Cerifera Cera
Cetearyl Glucoside
Behentrimonium Methosulfate
Triethyl Citrate
Caffeine
Sodium Lauroyl Lactylate
Cholesterol
Phenoxyethanol
Tocopherol
Hydrogenated Lecithin
Hydroxyacetophenone
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Phytosphingosine
Polyacrylate Crosspolymer-6
Benzoic Acid
Water, Glycerin, Ascorbic Acid, Propanediol, Dimethicone, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Glyceryl Isostearate, Sodium Hydroxide, Glyceryl Stearate, PEG-100 Stearate, Panthenol, Dipotassium Glycyrrhizate, Hydrogenated Jojoba Oil, Ceramide NP, Ceramide AP, Ceramide EOP, Carbomer, Copernicia Cerifera Cera, Cetearyl Glucoside, Behentrimonium Methosulfate, Triethyl Citrate, Caffeine, Silica, Sodium Hyaluronate, Sodium Lauroyl Lactylate, Cholesterol, Phenoxyethanol, Tocopherol, Hydrogenated Lecithin, Hydroxyacetophenone, Citric Acid, Caprylyl Glycol, Trisodium Ethylenediamine Disuccinate, Xanthan Gum, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Phytosphingosine, Polyacrylate Crosspolymer-6, Benzoic Acid
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Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
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.
Glyceryl Stearate is made by reacting glycerin with stearic acid (typically sourced from plant oils like palm or coconut). It's an emulsifier, emollient, and mild occlusive.
Emulsifiers help ingredients like oil and water stay mixed so your formula stays nicely blended and uniform in texture.
This ingredient is typically used in concentrations between 1-10%. Studies have found it to be non-sensitizing, non-phototoxic, and non-photoallergenic.
A close cousin of this ingredient is Glyceryl Stearate SE ("self-emulsifying"). This just has a small amount of sodium or potassium stearate added so it can emulsify without a co-emulsifier.
Since this ingredient is an ester of a C18 fatty acid, it may not be fungal acne safe. The Malassezia yeast can potentially metabolize within the C11-C24 range.
Fun fact: The human body also creates Glyceryl Stearate naturally.
Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Silica, also known as silicon dioxide, is a naturally occurring mineral. It is used as a fine, spherical, and porous powder in cosmetics.
Though it has exfoliant properties, the function of silica varies depending on the product.
The unique structure of silica enhances the spreadability and adds smoothness, making it a great texture enhancer.
It is also used as an active carrier, emulsifier, and mattifier due to its ability to absorb excess oil.
In some products, tiny microneedles called spicules are made from silica or hydrolyzed sponge. When you rub them in, they lightly polish away dead skin layers and enhance the penetration of active ingredients.
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.
Trisodium Ethylenediamine Disuccinate is used to help stabilize a product.
It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known to be harmful.
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.