COSRX The Hyaluronic Acid 3 Serum Versus The Ordinary Hyaluronic Acid 2% + B5
Updated on February 16, 2024
Overview
What they are
These products are both cruelty-free and reef safe . They have a total of 9 ingredients in common
Cool Features
They both contain hyaluronic acid
Suited For
They're both likely to be good for dry skin, brightening skin, sensitive skin and scar healing
Free From
They both do not contain any common allergens, fragrances, oils, parabens or sulfates
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
COSRX The Hyaluronic Acid 3 Serum 43 ingredients
The Ordinary Hyaluronic Acid 2% + B5 17 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
COSRX The Hyaluronic Acid 3 Serum 43 ingredients
The Ordinary Hyaluronic Acid 2% + B5 17 ingredients
Key Ingredients
Benefits
Concerns
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningButylene Glycol
Humectant
Propanediol
Solvent
Glycerin
Humectant
Sodium Hyaluronate 3%
Humectant
Pentylene Glycol
Skin Conditioning1,2-Hexanediol
Skin Conditioning
Diethoxyethyl Succinate
SolventSodium Polyacryloyldimethyl Taurate
Emulsion StabilisingBetaine
Humectant
Xanthan Gum
EmulsifyingDimethicone
Emollient
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingSodium PCA
Humectant
Sodium Lactate
BufferingPCA
Humectant
Glyceryl Acrylate/Acrylic Acid Copolymer
HumectantHydrogenated Lecithin
Emulsifying
Ethylhexylglycerin
Skin ConditioningSerine
Masking
Alanine
MaskingGlycine
Buffering
Sodium Phytate
Sorbitan Isostearate
Emulsifying
Pvm/Ma Copolymer
Emulsion StabilisingGlutamic Acid
Humectant
Citric Acid
Buffering
Lysine Hcl
Skin Conditioning
Threonine
Arginine
Masking
Sodium Methyl Stearoyl Taurate
CleansingProline
Skin ConditioningCeramide NP
Skin Conditioning
Cholesterol
Emollient
Caprylic/Capric Triglyceride
Masking
Phytosphingosine
Skin Conditioning
Stearic Acid
Cleansing
Oleic Acid
Emollient
Alcohol
Antimicrobial
Tocopherol
Antioxidant
Lactic Acid
Buffering
Caprylyl Glycol
EmollientCaprylhydroxamic Acid
Water, Butylene Glycol, Propanediol, Glycerin, Sodium Hyaluronate 3%, Pentylene Glycol, 1,2-Hexanediol, Diethoxyethyl Succinate, Sodium Polyacryloyldimethyl Taurate, Betaine, Xanthan Gum, Dimethicone, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium PCA, Sodium Lactate, PCA, Glyceryl Acrylate/Acrylic Acid Copolymer, Hydrogenated Lecithin, Ethylhexylglycerin, Serine, Alanine, Glycine, Sodium Phytate, Sorbitan Isostearate, Pvm/Ma Copolymer, Glutamic Acid, Citric Acid, Lysine Hcl, Threonine, Arginine, Sodium Methyl Stearoyl Taurate, Proline, Ceramide NP, Cholesterol, Caprylic/Capric Triglyceride, Phytosphingosine, Stearic Acid, Oleic Acid, Alcohol, Tocopherol, Lactic Acid, Caprylyl Glycol, Caprylhydroxamic Acid
Water
Skin ConditioningSodium Hyaluronate
Humectant
Pentylene Glycol
Skin ConditioningPropanediol
Solvent
Sodium Hyaluronate Crosspolymer
Humectant
Panthenol
Skin Conditioning
Ahnfeltia Concinna Extract
Skin ConditioningGlycerin
Humectant
Trisodium Ethylenediamine Disuccinate
Citric Acid
Buffering
Isoceteth-20
Emulsifying
Ethoxydiglycol
HumectantEthylhexylglycerin
Skin ConditioningHexylene Glycol
Emulsifying1,2-Hexanediol
Skin Conditioning
Phenoxyethanol
Preservative
Caprylyl Glycol
EmollientWater, Sodium Hyaluronate, Pentylene Glycol, Propanediol, Sodium Hyaluronate Crosspolymer, Panthenol, Ahnfeltia Concinna Extract, Glycerin, Trisodium Ethylenediamine Disuccinate, Citric Acid, Isoceteth-20, Ethoxydiglycol, Ethylhexylglycerin, Hexylene Glycol, 1,2-Hexanediol, Phenoxyethanol, Caprylyl Glycol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.Â
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservativesÂ
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidEthylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.
You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinPentylene 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 GlycolPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.Â
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolSodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronateWater. 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. Stay hydrated!
Learn more about WaterIngredient Ratings
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When to use
COSRX The Hyaluronic Acid 3 Serum 43 ingredients
The Ordinary Hyaluronic Acid 2% + B5 17 ingredients
Reviews
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