Skin science article
First Aid Beauty Ultra Repair Oil-Control Moisturizer Versus Cetaphil Daily Hydrating Moisturiser Sensitive Skin
First Aid Beauty Ultra Repair Oil-Control Moisturizer Versus Cetaphil Daily Hydrating Moisturiser Sensitive Skin This oil-control moisturizer is formulated around Niacinamide and Avena Sativa Kernel Extract to balance excess oil and strengthen the skin barrier
First Aid Beauty Ultra Repair Oil-Control Moisturizer Versus Cetaphil Daily Hydrating Moisturiser Sensitive Skin
This oil-control moisturizer is formulated around Niacinamide and Avena Sativa Kernel Extract to balance excess oil and strengthen the skin barrier.
This day moisturizer is formulated around Hydrolyzed Hyaluronic Acid to hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Dimethicone
Propanediol
Butylene Glycol
Niacinamide
Nylon-12
Acrylates Crosspolymer
Sodium Hyaluronate
Enantia Chlorantha Bark Extract
Avena Sativa Kernel Extract
Camellia Sinensis Leaf Extract
Chrysanthemum Parthenium Extract
Glycerin
Oleanolic Acid
Sorbitan Isostearate
Caprylyl Glycol
Glyceryl Stearate Citrate
Hydrogenated Polydecene
2-Hydroxyethyl Acrylate
1,2-Hexanediol
Lecithin
Polysilicone-11
Polysorbate 60
Sodium Caprylate
Sodium Acrylates Copolymer
Laureth-8
Citric Acid
Phenoxyethanol
Potassium Sorbate
Sodium Benzoate
Water, Dimethicone, Propanediol, Butylene Glycol, Niacinamide, Nylon-12, Acrylates Crosspolymer, Sodium Hyaluronate, Enantia Chlorantha Bark Extract, Avena Sativa Kernel Extract, Camellia Sinensis Leaf Extract, Chrysanthemum Parthenium Extract, Glycerin, Oleanolic Acid, Sorbitan Isostearate, Caprylyl Glycol, Glyceryl Stearate Citrate, Hydrogenated Polydecene, 2-Hydroxyethyl Acrylate, 1,2-Hexanediol, Lecithin, Polysilicone-11, Polysorbate 60, Sodium Caprylate, Sodium Acrylates Copolymer, Laureth-8, Citric Acid, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate
Dicaprylyl Carbonate
Cyclopentasiloxane
Hydroxyethyl Urea
Glyceryl Stearate
PEG-100 Stearate
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Cetyl Alcohol
Erythritol
Glycine Soja Oil
Homarine Hcl
Hydrolyzed Hyaluronic Acid
Sodium Hydroxide
Sodium PCA
Tocopherol
Water, Dicaprylyl Carbonate, Cyclopentasiloxane, Glycerin, Hydroxyethyl Urea, Glyceryl Stearate, PEG-100 Stearate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Caprylyl Glycol, Cetyl Alcohol, Erythritol, Glycine Soja Oil, Homarine Hcl, Hydrolyzed Hyaluronic Acid, Phenoxyethanol, Potassium Sorbate, Sodium Benzoate, Sodium Hydroxide, Sodium PCA, Tocopherol
Reviews
Alternatives
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).
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.
Potassium 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.
Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.
Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.
It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.
Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.
We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.
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!