La Roche-Posay Toleriane Dermallergo Ultra Soothing Repair Moisturizer Versus Olay Regenerist Collagen Peptide 24 Moisturizer (Fragrance Free)
This barrier-repair moisturizer is formulated around Squalane and Butyrospermum Parkii Butter to strengthen the skin barrier and calm redness.
This anti-aging moisturizer is formulated around Niacinamide and Panthenol to soften the look of wrinkles and refine skin texture.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningIsocetyl Stearate
Emollient
Squalane
Emollient
Butyrospermum Parkii Butter
Skin Conditioning
Dimethicone
Emollient
Glycerin
Humectant
Zea Mays Starch
Absorbent
Pentylene Glycol
Skin Conditioning
Butylene Glycol
Humectant
Glyceryl Stearate
Emollient
PEG-100 Stearate
Surfactant
Cetyl Alcohol
Emollient
Salvia Miltiorrhiza Root Extract
Skin ConditioningDimethiconol
Emollient
Sodium Hydroxide
BufferingSphingomonas Ferment Extract
Skin Conditioning
Caprylyl Glycol
Emollient
Citric Acid
Buffering
Acetyl Dipeptide-1 Cetyl Ester
Skin Conditioning
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingWater, Isocetyl Stearate, Squalane, Butyrospermum Parkii Butter, Dimethicone, Glycerin, Zea Mays Starch, Pentylene Glycol, Butylene Glycol, Glyceryl Stearate, PEG-100 Stearate, Cetyl Alcohol, Salvia Miltiorrhiza Root Extract, Dimethiconol, Sodium Hydroxide, Sphingomonas Ferment Extract, Caprylyl Glycol, Citric Acid, Acetyl Dipeptide-1 Cetyl Ester, Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Water
Skin ConditioningGlycerin
Humectant
Niacinamide
Smoothing
Isohexadecane
EmollientDimethicone
Emollient
Isopropyl Isostearate
Emollient
Stearyl Alcohol
Emollient
Polyacrylamide
Panthenol
Skin Conditioning
Palmitoyl Pentapeptide-4
Skin Conditioning
Tremella Fuciformis Sporocarp Extract
Antioxidant
Tapioca Starch
C13-14 Isoparaffin
Emollient
Caprylyl Glycol
Emollient
Dimethiconol
Emollient
Laureth-7
EmulsifyingCetearyl Alcohol
Emollient
Cetearyl Glucoside
Emulsifying
Palmitic Acid
Emollient
Stearic Acid
Cleansing
Cetyl Alcohol
Emollient
Behenyl Alcohol
Emollient
Disodium EDTA
PEG-100 Stearate
Surfactant
Titanium Dioxide
Cosmetic Colorant
Polymethylsilsesquioxane
1,2-Hexanediol
Skin Conditioning
Phenoxyethanol
Preservative
Water, Glycerin, Niacinamide, Isohexadecane, Dimethicone, Isopropyl Isostearate, Stearyl Alcohol, Polyacrylamide, Panthenol, Palmitoyl Pentapeptide-4, Tremella Fuciformis Sporocarp Extract, Tapioca Starch, C13-14 Isoparaffin, Caprylyl Glycol, Dimethiconol, Laureth-7, Cetearyl Alcohol, Cetearyl Glucoside, Palmitic Acid, Stearic Acid, Cetyl Alcohol, Behenyl Alcohol, Disodium EDTA, PEG-100 Stearate, Titanium Dioxide, Polymethylsilsesquioxane, 1,2-Hexanediol, Phenoxyethanol
Reviews
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).
Learn more about Caprylyl GlycolCetyl 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.
Learn more about Cetyl AlcoholDimethicone 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.
Learn more about DimethiconeDimethiconol is a silicone that resembles the popular dimethicone. Like other silicones, it is an emollient. Emollients create a thin film on skin to prevent moisture from escaping.
This ingredient helps to create a silky texture and improve spreadability. Due to its high molecular weight and thickness, it is often combined with cyclopentasiloxane.
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.
Learn more about GlycerinPeg-100 Stearate is an emollient and emulsifier. As an emollient, it helps keep skin soft by trapping moisture in. On the other hand, emulsifiers help prevent oil and water from separating in a product.
PEGS are a hydrophilic polyether compound . There are 100 ethylene oxide monomers in Peg-100 Stearate. Peg-100 Stearate is polyethylene glycol ester of stearic acid.
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!
Learn more about Water
