The Ordinary Natural Moisturizing Factors + HA Versus Olay Collagen Peptide 24 Eye Cream

The Ordinary Natural Moisturizing Factors + HA Versus Olay Collagen Peptide 24 Eye Cream

This barrier-repair moisturizer is formulated around Sodium Hyaluronate and Arginine to strengthen the skin barrier and hydrate skin.

This anti-aging eye moisturizer is formulated around Niacinamide and Palmitoyl Pentapeptide-4 to soften the look of wrinkles and refine skin texture.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Caprylic/Capric Triglyceride

Cetyl Alcohol

Propanediol

Stearyl Alcohol

Glycerin

Sodium Hyaluronate

Arginine

Aspartic Acid

Glycine

Alanine

Serine

Valine

Isoleucine

Proline

Threonine

Histidine

Phenylalanine

Glucose

Maltose

Fructose

Trehalose

Sodium PCA

PCA

Sodium Lactate

Urea

Allantoin

Linoleic Acid

Oleic Acid

Phytosteryl Canola Glycerides

Palmitic Acid

Stearic Acid

Lecithin

Triolein

Tocopherol

Carbomer

Isoceteth-20

Polysorbate 60

Sodium Chloride

Citric Acid

Trisodium Ethylenediamine Disuccinate

Pentylene Glycol

Triethanolamine

Sodium Hydroxide

Phenoxyethanol

Chlorphenesin

Water, Caprylic/Capric Triglyceride, Cetyl Alcohol, Propanediol, Stearyl Alcohol, Glycerin, Sodium Hyaluronate, Arginine, Aspartic Acid, Glycine, Alanine, Serine, Valine, Isoleucine, Proline, Threonine, Histidine, Phenylalanine, Glucose, Maltose, Fructose, Trehalose, Sodium PCA, PCA, Sodium Lactate, Urea, Allantoin, Linoleic Acid, Oleic Acid, Phytosteryl Canola Glycerides, Palmitic Acid, Stearic Acid, Lecithin, Triolein, Tocopherol, Carbomer, Isoceteth-20, Polysorbate 60, Sodium Chloride, Citric Acid, Trisodium Ethylenediamine Disuccinate, Pentylene Glycol, Triethanolamine, Sodium Hydroxide, Phenoxyethanol, Chlorphenesin

Petrolatum

Isopropyl Isostearate

Tapioca Starch

Isohexadecane

Niacinamide

Panthenol

Palmitoyl Pentapeptide-4

Tremella Fuciformis Sporocarp Extract

Caprylyl Glycol

C13-14 Isoparaffin

Cetearyl Alcohol

Cetearyl Glucoside

Laureth-7

Behenyl Alcohol

Disodium EDTA

Polyacrylamide

PEG-100 Stearate

Polymethylsilsesquioxane

1,2-Hexanediol

Water, Petrolatum, Isopropyl Isostearate, Tapioca Starch, Isohexadecane, Glycerin, Niacinamide, Stearyl Alcohol, Cetyl Alcohol, Panthenol, Palmitoyl Pentapeptide-4, Tremella Fuciformis Sporocarp Extract, Caprylyl Glycol, C13-14 Isoparaffin, Cetearyl Alcohol, Cetearyl Glucoside, Laureth-7, Palmitic Acid, Stearic Acid, Behenyl Alcohol, Disodium EDTA, Polyacrylamide, PEG-100 Stearate, Polymethylsilsesquioxane, 1,2-Hexanediol, Phenoxyethanol

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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.

Cetyl Alcohol is a fatty alcohol. Fatty Alcohols are most often used as an emollient or to thicken a product.

Its main roles are:

Though it has "alcohol" in the name, it is not related to denatured alcohol or ethyl alcohol.

The FDA allows products labeled "alcohol-free" to have fatty alcohols.

This ingredient may not be fungal acne safe. It is a primary fatty alcohol with a chain length above 12 carbons. A study from 2019 show Malassezia can feed on fatty alcohols in this range, so it may trigger fungal acne in those prone to it.

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.

Palmitic Acid is a fatty acid naturally found in our skin and in many plant and animal sources.

In cosmetics, it is usually derived from palm oil. It serves many purposes in skincare, acting as a cleanser, emollient, and emulsifier.

Interestingly, topically applied Palmitic Acid can be elongated into longer chain fatty acids and ceramides. A 2019 study found low levels of Palmitic Acid lead to slower development of cells, suggesting it plays a role in keeping your skin's renewal process on track.

The CIR (Cosmetic Ingredient Review) panel determined it safe as used in cosmetics at concentrations up to 13%. It is non-irritating and non-sensitizing in clinical studies.

The culprit behind fungal acne, the Malassezia yeast, feeds on fatty acids with carbon chain lengths between C11-C24. Palmitic Acid, at C16, falls right into that sweet spot.

In vitro studies have shown that Palmitic Acid is one of the fatty acids that induce rapid Malassezia growth in lab settings.

It's worth noting that what feeds yeast in a lab doesn't necessarily feed it on your face since formulation and your skin's chemistry play a bigger role.

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.

Stearic 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.

Stearyl Alcohol is a type of fatty alcohol from stearic acid. It is a white, waxy compound used to emulsify ingredients used as an emollient or to thicken a product.

Emollients help soothe and hydrate the skin by trapping moisture.

Fatty alcohols are usually derived from natural fats and oils and therefore do not have the same drying or irritating effect as solvent (ethanol) alcohols.

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!

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