Acnecide Purifide Daily Moisturiser SPF 30 Versus Cetaphil Pro Acne Prone Oil-Free Moisturising Lotion SPF 25
What's inside
What's inside
Key Ingredients
Benefits
Concerns
No concerns
Ingredients Side-by-side
Water
Skin ConditioningOctocrylene
UV AbsorberIsopropyl Lauroyl Sarcosinate
Skin ConditioningGlycerin
HumectantEthylhexyl Salicylate
UV AbsorberDimethicone
EmollientButyl Methoxydibenzoylmethane
UV AbsorberDiisopropyl Sebacate
EmollientSilica
AbrasivePolymethyl Methacrylate
Sucrose Tristearate
EmollientAluminum Starch Octenylsuccinate
AbsorbentPentylene Glycol
Skin ConditioningPolysorbate 61
EmulsifyingAllantoin
Skin ConditioningCaprylyl Glycol
EmollientCarbomer
Emulsion StabilisingDimethiconol
EmollientDisodium EDTA
Glycyrrhetinic Acid
Skin ConditioningHydroxypalmitoyl Sphinganine
Skin ConditioningPanthenol
Skin ConditioningPhenoxyethanol
PreservativePotassium Sorbate
PreservativeSodium Stearoyl Glutamate
CleansingTocopheryl Acetate
AntioxidantTriethanolamine
BufferingXanthan Gum
EmulsifyingZinc Gluconate
Skin ConditioningWater, Octocrylene, Isopropyl Lauroyl Sarcosinate, Glycerin, Ethylhexyl Salicylate, Dimethicone, Butyl Methoxydibenzoylmethane, Diisopropyl Sebacate, Silica, Polymethyl Methacrylate, Sucrose Tristearate, Aluminum Starch Octenylsuccinate, Pentylene Glycol, Polysorbate 61, Allantoin, Caprylyl Glycol, Carbomer, Dimethiconol, Disodium EDTA, Glycyrrhetinic Acid, Hydroxypalmitoyl Sphinganine, Panthenol, Phenoxyethanol, Potassium Sorbate, Sodium Stearoyl Glutamate, Tocopheryl Acetate, Triethanolamine, Xanthan Gum, Zinc Gluconate
Water
Skin ConditioningIsopropyl Lauroyl Sarcosinate
Skin ConditioningGlycerin
HumectantDimethicone
EmollientDiisopropyl Sebacate
EmollientSilica
AbrasivePolymethyl Methacrylate
Aluminum Starch Octenylsuccinate
AbsorbentSucrose Stearate
EmollientDimethiconol
EmollientPentylene Glycol
Skin ConditioningAllantoin
Skin ConditioningCaprylyl Glycol
EmollientPolyacrylic Acid
Emulsion StabilisingDisodium EDTA
Glycyrrhetinic Acid
Skin ConditioningCeramide Ns
Skin ConditioningPanthenol
Skin ConditioningPhenoxyethanol
PreservativePolysorbate 60
EmulsifyingPotassium Sorbate
PreservativeSodium Stearoyl Glutamate
CleansingTocopheryl Acetate
AntioxidantTriethanolamine
BufferingXanthan Gum
EmulsifyingZinc Gluconate
Skin ConditioningWater, Isopropyl Lauroyl Sarcosinate, Glycerin, Dimethicone, Diisopropyl Sebacate, Silica, Polymethyl Methacrylate, Aluminum Starch Octenylsuccinate, Sucrose Stearate, Dimethiconol, Pentylene Glycol, Allantoin, Caprylyl Glycol, Polyacrylic Acid, Disodium EDTA, Glycyrrhetinic Acid, Ceramide Ns, Panthenol, Phenoxyethanol, Polysorbate 60, Potassium Sorbate, Sodium Stearoyl Glutamate, Tocopheryl Acetate, Triethanolamine, Xanthan Gum, Zinc Gluconate
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.
Learn more about AllantoinAluminum Starch Octenylsuccinate is a synthetic powder used as an absorbent, thickener, and anti-caking agent.
As an absorbent, it is great at mattifying skin by soaking up the oil. This is why you'll find it in a range of products from makeup to moisturizers.
This ingredient is considered a modified starch. Starch can also be found naturally in plants.
One study from 1991 found that 5% of this ingredient enhanced titanium dioxide SPF by as much as 40%. The study found 1% titanium dioxide had a 5.6 SPF and adding 5% of aluminum starch octenylsuccinate boosted it to an SPF of 8.1
Although “aluminum” in an ingredient name can raise red flags for some consumers, the form and usage context matter significantly. For typical topical applications, there is no substantial evidence of health risks - such as cancer, neurotoxicity, or systemic “aluminum overload.”
Learn more about Aluminum Starch OctenylsuccinateCaprylyl 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 or alcohol, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
Learn more about Caprylyl GlycolWe don't have a description for Diisopropyl Sebacate yet.
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.
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.
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%.
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 GlycerinGlycyrrhetinic acid is a compound found in licorice. It has skin conditioning, skin soothing, antibacterial, and antioxidant properties.
Not only is this a great ingredient for soothing inflammation, studies show this compound is effective at protecting skin against UV-B induced damage.
Fun fact: This ingredient is also used to mask the bitter taste of medicine.
Learn more about Glycyrrhetinic AcidWe don't have a description for Isopropyl Lauroyl Sarcosinate yet.
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.
Learn more about PanthenolPentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene GlycolPhenoxyethanol 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.
This ingredient is also known as PMMA. It is a polymer microsphere, composed of tiny, perfectly spherical particles formed from repeating units.
In cosmetics, PMMA is mainly used to give a soft or blurring effect. The transparent particles are able to scatter light and help reduce the appearance of fine-lines and imperfections.
PMMA is also able to enhance the texture of products by add a smooth feel.
Learn more about Polymethyl MethacrylatePotassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Learn more about Potassium SorbateSilica, 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.
Learn more about SilicaSodium Stearoyl Glutamate is an amino-acid based emulsifier. It is made by combining stearic acid with L-glutamic acid and neutralizing it to a sodium salt.
As an emulsifier, it works mainly as an oil-in-water one and helps keep the oil and water in your formulas blended. It also contributes to a smooth, non-greasy skin feel.
This ingredient is biodegradable and commonly available in natural/COSMOS-certified grades.
Learn more about Sodium Stearoyl GlutamateTocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.
One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.
Tocopheryl Acetate is commonly found in both skincare and dietary supplements.
Learn more about Tocopheryl AcetateTriethanolamine (TEA) is an emulsifier and pH adjuster. It is created using ethylene oxide and ammonia. This gives Triethanolamine a nitrogen core and a similar scent to ammonia.
As an emulsifier, it prevents ingredients from separating and enhances texture by adding volume to a product.
PH adjusters are common in cosmetic products. The pH of a product can affect the effectiveness of other ingredients. A product with a high pH may also irritate the skin.
If you are looking for the tea leaf ingredient, click here.
Learn more about TriethanolamineWater. 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 WaterXanthan 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.
Learn more about Xanthan GumZinc gluconate has antibacterial and wound healing properties. It is particularly effective against fighting inflammatory acne.
This ingredient is the zinc salt of the PHA gluconic acid. PHAs are gentle cousins to AHAs.