Skin science article
The Ordinary Natural Moisturizing Factors + PhytoCeramides Versus First Aid Beauty Ultra Repair Face Moisturizer
The Ordinary Natural Moisturizing Factors + PhytoCeramides Versus First Aid Beauty Ultra Repair Face Moisturizer This barrier-repair moisturizer is formulated around Linoleic Acid and Urea to strengthen the skin barrier and hydrate skin. This barrier-repair mo
The Ordinary Natural Moisturizing Factors + PhytoCeramides Versus First Aid Beauty Ultra Repair Face Moisturizer
This barrier-repair moisturizer is formulated around Linoleic Acid and Urea to strengthen the skin barrier and hydrate skin.
This barrier-repair moisturizer is formulated around Avena Sativa Kernel Flour and Squalane to strengthen the skin barrier and calm redness.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Caprylic/Capric Triglyceride
Cetyl Ethylhexanoate
Isodecyl Neopentanoate
Glycerin
Propanediol
Polyglyceryl-6 Polyricinoleate
Hydrogenated Vegetable Oil
Polyglyceryl-2 Isostearate
Isosorbide Dicaprylate
Disteardimonium Hectorite
Phytosteryl Canola Glycerides
Glycosphingolipids
Glycolipids
Linoleic Acid
Oleic Acid
Palmitic Acid
Stearic Acid
Arginine
Glycine
Alanine
Serine
Proline
Threonine
Glutamic Acid
Lysine Hcl
Betaine
Xylitylglucoside
Anhydroxylitol
Xylitol
Glucose
Maltose
Fructose
Trehalose
Sodium PCA
PCA
Sodium Lactate
Urea
Allantoin
Sodium Hyaluronate
Lecithin
Triolein
Dimethyl Isosorbide
Pentylene Glycol
Tocopherol
Hydroxymethoxyphenyl Decanone
Citric Acid
Trisodium Ethylenediamine Disuccinate
Magnesium Sulfate
Sodium Chloride
Sodium Hydroxide
Phenoxyethanol
Chlorphenesin
Water, Caprylic/Capric Triglyceride, Cetyl Ethylhexanoate, Isodecyl Neopentanoate, Glycerin, Propanediol, Polyglyceryl-6 Polyricinoleate, Hydrogenated Vegetable Oil, Polyglyceryl-2 Isostearate, Isosorbide Dicaprylate, Disteardimonium Hectorite, Phytosteryl Canola Glycerides, Glycosphingolipids, Glycolipids, Linoleic Acid, Oleic Acid, Palmitic Acid, Stearic Acid, Arginine, Glycine, Alanine, Serine, Proline, Threonine, Glutamic Acid, Lysine Hcl, Betaine, Xylitylglucoside, Anhydroxylitol, Xylitol, Glucose, Maltose, Fructose, Trehalose, Sodium PCA, PCA, Sodium Lactate, Urea, Allantoin, Sodium Hyaluronate, Lecithin, Triolein, Dimethyl Isosorbide, Pentylene Glycol, Tocopherol, Hydroxymethoxyphenyl Decanone, Citric Acid, Trisodium Ethylenediamine Disuccinate, Magnesium Sulfate, Sodium Chloride, Sodium Hydroxide, Phenoxyethanol, Chlorphenesin
Glyceryl Stearate Se
Dimethicone
Cetyl Alcohol
Avena Sativa Kernel Flour
Squalane
Caprylyl Glycol
Butyrospermum Parkii Butter
Persea Gratissima Oil
N-Butyl Alcohol
Carbomer
Chrysanthemum Parthenium Extract
Camellia Sinensis Leaf Extract
Glycyrrhiza Glabra Root Extract
Ceramide NP
Leuconostoc/Radish Root Ferment Filtrate
Tetrasodium EDTA
Water, Glyceryl Stearate Se, Glycerin, Caprylic/Capric Triglyceride, Dimethicone, Urea, Cetyl Alcohol, Avena Sativa Kernel Flour, Squalane, Caprylyl Glycol, Butyrospermum Parkii Butter, Allantoin, Persea Gratissima Oil, N-Butyl Alcohol, Carbomer, Chrysanthemum Parthenium Extract, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra Root Extract, Sodium Hydroxide, Ceramide NP, Leuconostoc/Radish Root Ferment Filtrate, Phenoxyethanol, Tetrasodium EDTA
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.
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.
Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss.
Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid.
In practice, that translates to a long shelf life and a consistently elegant skin feel.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns.
Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source.
This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out.
This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.
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.
Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
Urea is also called carbamide and is the diamide of carbonic acid. In cosmetics, urea is used to hydrate the skin. It also provides exfoliation in higher concentrations.
As a humectant, urea helps draw moisture from the air and from deep within the skin. This helps hydrate your skin. Studies show urea is an effective moisturizer for dry skin conditions. 40% urea is typical in medications for treating eczema and other skin conditions.
Urea has the strongest exfoliation effect in concentrations higher than 10%. It is a keratolytic agent, meaning it breaks down the keratin protein in the top layer of skin. This helps remove dead skin cells and flaking skin.
In medicine, urea has been shown to help increase the potency of other ingredients, such as fungal treatments.
Humans and animals use urea to metabolize nitrogen-containing compounds. Urea is highly soluble in water. Once dissolved, it is neither acidic nor alkaline.
Urea is actually one of the more well-studied and well-supported ingredients out there if you have eczema.
Clinical trials have shown that urea creams in the 5 - 10% range can:
Higher concentrations (20 -30%) can also help with thickened, scaly patches but is also more likely to sting on active flares.
Skip urea if you have rosacea. The AAD (American Academy of Dermatology) lists it alongside alcohol, menthol, and fragrance as a potential irritant for rosacea-prone skin. Urea's keratolytic and penetration-enhancing properties can trigger stinging, burning, and redness.
As always, your skin is unique, so definitely check in with your dermatologist.
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!