Skin science article
CeraVe Eye Repair Cream Versus Paula's Choice Ceramide-Enriched Firming Eye Cream
CeraVe Eye Repair Cream Versus Paula's Choice Ceramide-Enriched Firming Eye Cream This barrier-repair eye moisturizer is formulated around Niacinamide and Ceramide NP to strengthen the skin barrier and hydrate skin. This anti-aging eye moisturizer is formulate
CeraVe Eye Repair Cream Versus Paula's Choice Ceramide-Enriched Firming Eye Cream
This barrier-repair eye moisturizer is formulated around Niacinamide and Ceramide NP to strengthen the skin barrier and hydrate skin.
This anti-aging eye moisturizer is formulated around Ceramide Ns and Palmitoyl Tripeptide-5 to soften the look of wrinkles and strengthen the skin barrier.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Niacinamide
Cetyl Alcohol
Caprylic/Capric Triglyceride
Glycerin
Propanediol
Isononyl Isononanoate
Jojoba Esters
PEG-20 Methyl Glucose Sesquistearate
Cetearyl Alcohol
Dimethicone
Methyl Glucose Sesquistearate
Asparagopsis Armata Extract
Ceramide NP
Ceramide AP
Potassium Sorbate
Ceramide EOP
Sorbitol
Carbomer
Zinc Citrate
Behentrimonium Methosulfate
Triethanolamine
Aloe Barbadensis Leaf Extract
Sodium Lauroyl Lactylate
Sodium Hydroxide
Equisetum Arvense Extract
Sodium Hyaluronate
Cholesterol
Phenoxyethanol
Prunus Amygdalus Dulcis Oil
Tocopherol
Ascophyllum Nodosum Extract
Laureth-4
Hydrogenated Vegetable Oil
Tetrasodium EDTA
Maltodextrin
Phytosphingosine
Xanthan Gum
Butylene Glycol
Ethylhexylglycerin
Chrysanthellum Indicum Extract
Water, Niacinamide, Cetyl Alcohol, Caprylic/Capric Triglyceride, Glycerin, Propanediol, Isononyl Isononanoate, Jojoba Esters, PEG-20 Methyl Glucose Sesquistearate, Cetearyl Alcohol, Dimethicone, Methyl Glucose Sesquistearate, Asparagopsis Armata Extract, Ceramide NP, Ceramide AP, Potassium Sorbate, Ceramide EOP, Sorbitol, Carbomer, Zinc Citrate, Behentrimonium Methosulfate, Triethanolamine, Aloe Barbadensis Leaf Extract, Sodium Lauroyl Lactylate, Sodium Hydroxide, Equisetum Arvense Extract, Sodium Hyaluronate, Cholesterol, Phenoxyethanol, Prunus Amygdalus Dulcis Oil, Tocopherol, Ascophyllum Nodosum Extract, Laureth-4, Hydrogenated Vegetable Oil, Tetrasodium EDTA, Maltodextrin, Phytosphingosine, Xanthan Gum, Butylene Glycol, Ethylhexylglycerin, Chrysanthellum Indicum Extract
Neopentyl Glycol Diheptanoate
Glyceryl Stearate
PEG-100 Stearate
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Ascorbyl Glucoside
Potassium Cetyl Phosphate
Sodium Ascorbyl Phosphate
Bis-Diglyceryl Polyacyladipate-2
Polyglyceryl-10 Dioleate
Tetrahexyldecyl Ascorbate
Ceramide Ns
Ceramide Eos
Palmitoyl Tripeptide-5
Acetyl Tetrapeptide-5
Caprooyl Phytosphingosine
Caprooyl Sphingosine
Squalane
Retinol
Vitis Vinifera Seed Extract
Glycyrrhiza Glabra Root Extract
Punica Granatum Fruit Extract
Dunaliella Salina Extract
Pongamia Glabra Seed Oil
Tocopheryl Acetate
Allantoin
Bisabolol
Carnosine
Panthenol
Sodium PCA
Pullulan
Glyceryl Ascorbate
Behenic Acid
Sodium Citrate
Sodium Polyacrylate
Caprylyl Glycol
Ethylhexyl Stearate
Ceteareth-25
Trideceth-6
Propyl Gallate
Polysorbate 20
Disodium EDTA
Mica
Chlorphenesin
Sodium Benzoate
Water, Neopentyl Glycol Diheptanoate, Cetyl Alcohol, Butylene Glycol, Glycerin, Glyceryl Stearate, PEG-100 Stearate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Ascorbyl Glucoside, Potassium Cetyl Phosphate, Sodium Ascorbyl Phosphate, Bis-Diglyceryl Polyacyladipate-2, Polyglyceryl-10 Dioleate, Tetrahexyldecyl Ascorbate, Ceramide Ns, Ceramide EOP, Ceramide AP, Ceramide Eos, Ceramide NP, Palmitoyl Tripeptide-5, Acetyl Tetrapeptide-5, Caprooyl Phytosphingosine, Caprooyl Sphingosine, Cholesterol, Squalane, Retinol, Vitis Vinifera Seed Extract, Glycyrrhiza Glabra Root Extract, Punica Granatum Fruit Extract, Dunaliella Salina Extract, Pongamia Glabra Seed Oil, Tocopheryl Acetate, Allantoin, Bisabolol, Carnosine, Panthenol, Sodium PCA, Pullulan, Glyceryl Ascorbate, Behenic Acid, Dimethicone, Sodium Citrate, Sodium Polyacrylate, Caprylyl Glycol, Ethylhexyl Stearate, Ceteareth-25, Sodium Hydroxide, Trideceth-6, Propyl Gallate, Polysorbate 20, Disodium EDTA, Mica, Phenoxyethanol, Chlorphenesin, Sodium Benzoate
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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.
Ceramide AP is is a skin-identical lipid that mimics what your skin already makes naturally. Ceramides help maintain epidermal integrity and barrier function.
You'll often see this ingredient paired with other ceramides (like ceramide NP), cholesterol, or fatty acids because this combination best mimics the natural lipid mix your skin already has.
The skin's ability to produce ceramides gets disrupted in skin conditions like eczema. This in turn weakens the skin barrier and applying ceramides topically has been shown to replenish what's been lost to restore barrier function.
Most of the studies with Ceramide AP test it as part of a multi-ceramide complex; studies reinforce ceramide AP's role in rebalancing ceramides in skin and improving skin hydration.
Ceramide EOP is formally known as Ceramide 1.
It is naturally found in skin and part of the intercellular "mortar" holding everything together in your outermost layer.
EOP stands for a linked Ester fatty acid, a linked Omega hydroxy fatty acid, and the Phytosphingosine base.
What makes Ceramide EOP special is its ultra-long fatty acid chain; this unique structure allows it to bridge the lipid layers in your skin barrier to prevent water loss (something no other ceramide can do).
Low levels of Ceramide EOP have been found in people with eczema and psoriasis.
Using it together with other ceramides, cholesterol, and linoleic acid have been shown to meaningfully improve hydration and reduce water loss.
In one clinical study, a regimen using Ceramide EOP, NP, and AP led to significant symptom improvements in patients with eczema, psoriasis, and dry skin in just 4 weeks.
You'll usually see concentrations between 0.1-0.5% in formulations. Overall, this is a well-tolerated and safe ingredient for cosmetic use.
Ceramide NP (formerly known as Ceramide 3) is one of the skin's naturally occurring lipids.
Since ceramides are the major lipid components of the skin, they are crucial for maintaining skin barrier and hydration. Ceramide NP most closely mirrors the dominant kind in human skin amongst ceramide subtypes.
This ceramide works by slotting into gaps within the stratum corneum's lipid matrix to limit trans-epidermal water loss (TEWL) and shield the skin against external irritants.
A study with 312 patients found that using a ceramide-containing routine for 4 weeks reduced the severity of atopic dermatitis by over 61%.
Another clinical study in subjects aged 60 and older found that a ceramide body wash and moisturizer improved skin dryness and itchy skin in 15 days.
Overall, ceramides are considered non-irritating and safety tests have found little to no observable adverse effects from using this ingredient.
Ceramide NP is usually sourced from plants (like soybean or rice bran), or produced synthetically.
Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.
Its main roles are:
Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol.
The FDA allows products labeled "alcohol-free" to have fatty alcohols.
This ingredient may not be fungal acne safe. It is a primary fatty alcohol with a chain length above 12 carbons. A study from 2019 show Malassezia can feed on fatty alcohols in this range, so it may trigger fungal acne in those prone to it.
Cholesterol is a lipid that is naturally found in human skin and is one of the three key components of your skin barrier. In skincare, it is an emollient and barrier-repairing ingredient.
It works by fitting directly into the lipid layers of skin to help restore structure and reduce transepidermal water loss (TEWL).
This is a great ingredient for dry, compromised, or aging skin; our skin starts to produce less cholesterol with age.
Research shows cholesterol works best in combination with ceramides and fatty acids, the other two major components in your skin barrier.
Cholesterol is also a well-establish penetration enhancer and can help other actives absorb more effectively.
Cosmetic-grade cholesterol is usually derived from lanolin but plant and synthetic options also exist. We recommend reaching out to the brand if you have questions about their source of cholesterol.
Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
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.
Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
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!