Cetaphil Daily Facial Moisturizer SPF 50 Versus La Roche-Posay Anthelios SX Daily Moisturizing Cream Sunscreen SPF 15
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Ethylhexyl Methoxycinnamate 7.5%
UV Absorber
Ethylhexyl Salicylate 5%
UV Absorber
Octocrylene 7%
UV Absorber
Benzophenone-3 6%
UV Absorber
Titanium Dioxide 5.7%
Cosmetic Colorant
Water
Skin ConditioningPropylene Glycol
Humectant
Glycerin
Humectant
Dimethicone
Emollient
Vp/Eicosene Copolymer
Cyclomethicone
Emollient
Stearic Acid
Cleansing
Dimethiconol
Emollient
Potassium Cetyl Phosphate
EmulsifyingGlyceryl Stearate
Emollient
PEG-100 Stearate
Aluminum Hydroxide
EmollientDisodium EDTA
Tocopherol
Antioxidant
Triethanolamine
BufferingPhenoxyethanol
Preservative
Ethylparaben
Preservative
Chlorphenesin
Antimicrobial
Cetyl Alcohol
Emollient
Carbomer
Emulsion StabilisingMethylparaben
Preservative
Xanthan Gum
EmulsifyingEthylhexyl Methoxycinnamate 7.5%, Ethylhexyl Salicylate 5%, Octocrylene 7%, Benzophenone-3 6%, Titanium Dioxide 5.7%, Water, Propylene Glycol, Glycerin, Dimethicone, Vp/Eicosene Copolymer, Cyclomethicone, Stearic Acid, Dimethiconol, Potassium Cetyl Phosphate, Glyceryl Stearate, PEG-100 Stearate, Aluminum Hydroxide, Disodium EDTA, Tocopherol, Triethanolamine, Phenoxyethanol, Ethylparaben, Chlorphenesin, Cetyl Alcohol, Carbomer, Methylparaben, Xanthan Gum
Butyl Methoxydibenzoylmethane 2%
UV Absorber
Terephthalylidene Dicamphor Sulfonic Acid 2%
UV Absorber
Octocrylene 10%
UV Absorber
Carbomer
Emulsion StabilisingCyclomethicone
Emollient
Simethicone
Emollient
Disodium EDTA
Glycerin
Humectant
Hydroxypropyl Methylcellulose
Emulsion StabilisingIsopropyl Palmitate
Emollient
Methylparaben
Preservative
Phenoxyethanol
Preservative
Propylene Glycol
Humectant
Propylparaben
Preservative
Water
Skin ConditioningStearic Acid
Cleansing
Stearoyl Macrogolglycerides
Stearyl Alcohol
Emollient
Butyl Methoxydibenzoylmethane 2%, Terephthalylidene Dicamphor Sulfonic Acid 2%, Octocrylene 10%, Carbomer, Cyclomethicone, Simethicone, Disodium EDTA, Glycerin, Hydroxypropyl Methylcellulose, Isopropyl Palmitate, Methylparaben, Phenoxyethanol, Propylene Glycol, Propylparaben, Water, Stearic Acid, Stearoyl Macrogolglycerides, Stearyl Alcohol
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Carbomer is a high-molecular weight polymer of acrylic acid. It is used to form gels and thicken formulas.
Due to its large molecular size, carbomer has minimal skin penetration and is considered an inert ingredient.
A high amount of carbomer can cause pilling or balling up of products. Don't worry, most products contain 1% or less of carbomer.
Learn more about CarbomerCyclomethicone is a class of silicones used to improve the texture of products.
Their cyclic or circular structure decreases stability. This causes quick evaporation when applied to skin. Cyclomethicones are often used as a carrier for other ingredients. Once it evaporates, it leaves a silky barrier on the skin.
The most popular types of cyclomethicones include D5 and D6.
Learn more about CyclomethiconeDisodium 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%.
Learn more about Disodium EDTAGlycerin (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 GlycerinMethylparaben is a preservative and is a paraben. It is used to prevent the growth of fungus, mold, and other harmful bacteria. Parabens are chemicals used as preservatives in both cosmetics and food.
Methylparaben can be synthetically created. It can also be found naturally in some fruits, such as blueberries.
Oftentimes, Methylparaben is combined with other parabens to help increase the shelf life.
The safety of Methylparaben is currently being studied. While ongoing studies are looking into the safety of parabens, the results have been very mixed. Some studies have not found Methylparaben to be harmful.
Learn more about MethylparabenOctocrylene protects skin from sun damage. It absorbs UV-B with peak absorption of 304 nm. It is a common sunscreen ingredient and often paired with avobenzone, a UVA filter. This is because octocrylene stabilizes other sunscreen ingredients by protecting them from degradation when exposed to sunlight. Octocrylene is a photostable ingredient and loses about 10% of SPF in 95 minutes.
Octocrylene also acts as an emollient, meaning it helps skin retain moisture and softens skin. It is oil-soluble and hydrophobic, enhancing water-resistant properties in a product.
Those who are using ketoprofen, a topical anti-inflammatory drug, may experience an allergic reaction when using octocrylene. It is best to speak with a healthcare professional about using sunscreens with octocrylene.
The EU allows a maximum of these concentrations:
Learn more about OctocrylenePhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Propylene Glycol is a synthetic, colorless, odorless liquid that has been a staple in cosmetics for decades. It is a skin conditioning agent, humectant, and solvent.
As a humectant, it draw water to the skin to reduce flaking and restore suppleness. It's also a solvent that helps dissolve other actives and keeps formulas stable across temperature changes.
The CIR Expert Panel has confirmed this ingredient to be nontoxic and clinical studies show no sensitization at cosmetic use concentrations.
True allergic reactions are quite rare: a 15-year retrospective study of 6,751 patients found only 0.31% had a positive reaction (and less than half were considered clinically relevant).
It seemed that when sensitization does occur, it's most commonly linked to topical medication (like corticosteroids) and not cosmetics. Allergic contact dermatitis also appears largely limited to individuals with underlying skin conditions.
Overall, propylene glycol is a well-studied ingredient that most people can tolerate without issue.
Learn more about Propylene GlycolStearic Acid is a fatty acid that is already found in your skin. It's one of the free fatty acids that works alongside ceramides and cholesterols to maintain your barrier.
In cosmetics, it is a multitasker:
Safety-wise, the CIR Expert Panel has concluded it to be safe in cosmetics when formulated to be non-irritating and non-sensitizing.
Free stearic acid is a C18 fatty acid that the Malassezia yeast can substrate, so this ingredient may not be fungal acne safe.
Learn more about Stearic AcidWater. 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
