Skin science article
La Roche-Posay Toleriane Double Repair Face Moisturizer UV SPF 30 Versus Paula's Choice Skin Recovery Daily Moisturizing Lotion SPF 30
La Roche-Posay Toleriane Double Repair Face Moisturizer UV SPF 30 Versus Paula's Choice Skin Recovery Daily Moisturizing Lotion SPF 30 This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging. This barrier-repair moisturiz
La Roche-Posay Toleriane Double Repair Face Moisturizer UV SPF 30 Versus Paula's Choice Skin Recovery Daily Moisturizing Lotion SPF 30
This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging.
This barrier-repair moisturizer is formulated around Avena Sativa Kernel Extract and Tetrahexyldecyl Ascorbate to strengthen the skin barrier and hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Butyl Methoxydibenzoylmethane 3%
Homosalate 5%
Ethylhexyl Salicylate 5%
Octocrylene 7%
Water
Glycerin
Silica
Dimethicone
Niacinamide
PEG-100 Stearate
Glyceryl Stearate
Stearic Acid
Stearyl Alcohol
Allantoin
Ceramide NP
Dimethicone/Vinyl Dimethicone Crosspolymer
Sodium Hydroxide
Myristic Acid
Myristyl Alcohol
Palmitic Acid
Ammonium Polyacryloyldimethyl Taurate
Disodium EDTA
Capryloyl Glycine
Caprylyl Glycol
Citric Acid
Xanthan Gum
T-Butyl Alcohol
Cetyl Alcohol
Tocopherol
Butyl Methoxydibenzoylmethane 3%, Homosalate 5%, Ethylhexyl Salicylate 5%, Octocrylene 7%, Water, Glycerin, Silica, Dimethicone, Niacinamide, PEG-100 Stearate, Glyceryl Stearate, Stearic Acid, Stearyl Alcohol, Allantoin, Ceramide NP, Dimethicone/Vinyl Dimethicone Crosspolymer, Sodium Hydroxide, Myristic Acid, Myristyl Alcohol, Palmitic Acid, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Capryloyl Glycine, Caprylyl Glycol, Citric Acid, Xanthan Gum, T-Butyl Alcohol, Cetyl Alcohol, Tocopherol
Titanium Dioxide 3.85%
Zinc Oxide 3.12%
C12-15 Alkyl Benzoate
Isononyl Isononanoate
Prunus Armeniaca Kernel Oil
Cyclopentasiloxane
Butylene Glycol
Pentylene Glycol
Cetearyl Alcohol
Glycine Soja Sterols
Vp/Eicosene Copolymer
Avena Sativa Kernel Extract
Sodium Hyaluronate
Tocopheryl Acetate
Hydrogenated Lecithin
Tetrahexyldecyl Ascorbate
Superoxide Dismutase
Ubiquinone
Ceramide Ng
Methicone
Palmitoyl Hexapeptide-12
PEG-10 Dimethicone
Cucumis Sativus Fruit Extract
Caprylic/Capric Triglyceride
Tribehenin
PEG-10 Phytosterol
Sorbitan Stearate
Polyhydroxystearic Acid
Alumina
Polysorbate 20
Aluminum Stearate
Ethylhexylglycerin
Phenoxyethanol
Chlorphenesin
Titanium Dioxide 3.85%, Zinc Oxide 3.12%, Water, C12-15 Alkyl Benzoate, Isononyl Isononanoate, Prunus Armeniaca Kernel Oil, Cyclopentasiloxane, Glyceryl Stearate, PEG-100 Stearate, Butylene Glycol, Pentylene Glycol, Cetearyl Alcohol, Dimethicone, Glycine Soja Sterols, Vp/Eicosene Copolymer, Avena Sativa Kernel Extract, Glycerin, Sodium Hyaluronate, Allantoin, Tocopheryl Acetate, Hydrogenated Lecithin, Tetrahexyldecyl Ascorbate, Superoxide Dismutase, Ubiquinone, Ceramide Ng, Methicone, Palmitoyl Hexapeptide-12, PEG-10 Dimethicone, Cucumis Sativus Fruit Extract, Caprylic/Capric Triglyceride, Tribehenin, PEG-10 Phytosterol, Sorbitan Stearate, Polyhydroxystearic Acid, Alumina, Polysorbate 20, Aluminum Stearate, Xanthan Gum, Caprylyl Glycol, Disodium EDTA, Ethylhexylglycerin, Phenoxyethanol, Chlorphenesin
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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.
Allantoin is a soothing ingredient known for its protective and moisturizing properties; it's basically a quiet workhorse ingredient you can find in a huge range of cosmetics.
Though it can be derived from the comfrey plant, allantoin is produced synthetically for cosmetic products to ensure purity.
Research shows it can encourage your skin cells to turn over and renew by stimulating keratinocyte and fibroblast proliferation.
It also has mild keratolytic properties to help loosen and shed dead skin cells without being harsh.
Studies also suggest allantoin can help calm inflammation by dialing down some of the chemical signals your skin sends out when it is irritated.
This ingredient is typically used in the 0.1-0.5% range, and the FDA recognizes it as a skin protectant in OTC products up to 2%.
Overall, allantoin is a wonderful addition to most routines; it is stable across a wide pH range (~4-8), works well with other ingredients, and is considered non-sensitizing/non-irritating.
Fun fact: Allantoin is naturally occurring in comfrey root, beets, chamomile, and wheat sprouts. Our bodies even produce it as a byproduct of uric acid metabolism.
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).
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.
Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.
This ingredient mainly works behind the scenes and helps with:
On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.
One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).
Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.
You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.
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.
Peg-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!
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.