Works for:
based on ingredients and %- Moisturizing
- Anti-aging
Can it cause trouble?
- Irritation risk: medium
- Comedogenic risk ingredients: 0
Key actives
Product Summary
"COSRX - The Hyaluronic Acid 3 Serum" is effective for: Moisturizing
This product could be helpful for: Anti-aging, but its actives are not the most effective or are not well-studied.
Ingredient callouts
- Ceramides (phytosphingosine 0.25% - 0.45% and ceramide np 0.25% - 0.50%). Ceramides are an important part of our natural skin barrier. The Ceramides used in skincare are synthetic or come from plants. They help soften the skin and can help "fill the gaps" in the skin barrier, keeping the skin hydrated and resilient for longer.
- Humectants (arginine 0.25% - 0.40%, glutamic acid 0.25% - 0.45%, glycine 0.25% - 0.45%, alanine 0.25% - 0.50%, glyceryl acrylate/acrylic acid copolymer 0.40% - 0.60%, pca 0.40% - 0.60%, sodium lactate 0.45% - 0.65%, sodium pca 0.45% - 0.70%, betaine 1.00% - 1.30%, sodium hyaluronate 3.00% (declared) and glycerin 3.00% - 3.60%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
About the brand
According to Cruelty-Free Kitty "COSRX" is cruelty free and so is its parent company.
Price
The product retails for 27.95A$ in Australia, from 19.89$ up to 25.00$ in the United States and for 28.00£ in the United Kingdom.
For a detailed price comparison: click here.
Works for
Moisturizing
What does the product description say?
Benefits , Infuses hydration , Strengthens skin barrier , Retains moisture , Plumps skin , Provides hydrating glow to complexion
Source: Escentual
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
alanine, arginine.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: arginine, dimethicone.
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: ceramide np, phytosphingosine
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
Helps attract water to the upper layer of the skin and improves the product texture
Naturally present in skin and helps to attract water to its upper layer
A type of lipid that is naturally present in skin. It might help in repairing skin barrier function and has anti-bacterial effect
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
Naturally present in skin and helps to attract water to its upper layer
An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin
A type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin
An emollient that is naturally found in skin
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
An amino-acid that helps attract water to the upper layer of the skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Helps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency
Helps to attract water to the upper layer of the skin and can help restore the skin barrier function
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
Used to preserve products, dissolve other ingredients and create a nice product texture
Helps preserve products and creates a nice product texture
Helps soften the upper layer of the skin. At the same time, it can weaken the skin's barrier enhancing penetration of other ingredients and increasing the risk of skin dryness
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)
A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin
Helps oil and water mix together and works as an emollient
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
Anti-aging
This product contains serine, threonine. These ingredients might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Moisturizing |
Total Promises Fulfilled score: 100/100.
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Potential irritants
Comedogenic ingredients
No comedogenic ingredients detected
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| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 COSRX The Hyaluronic Acid 3 Serum | Current | $19.89 | |
 The INKEY List CA Ceramide Serum | 63% | - | |
 MEDI-PEEL Luminous Silk Oil Serum | 61% | $30.20 | |
 AHC Hydrating Korean Skincare Aqualuronic Face Serum | 61% | $19.36 | |
Simply Pure Superdrug Simply Pure Hydrating Serum | 59% | $3.49 | |
 MEDIHEAL Baobab Soothing Moisture Serum | 59% | $28.00 |
Key Actives
A type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin
A type of lipid that is naturally present in skin. It might help in repairing skin barrier function and has anti-bacterial effect
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
An emollient that is naturally found in skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
Helps attract water to the upper layer of the skin and improves the product texture
Naturally present in skin and helps to attract water to its upper layer
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
Naturally present in skin and helps to attract water to its upper layer
Helps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency
Helps to attract water to the upper layer of the skin and can help restore the skin barrier function
An amino-acid that helps attract water to the upper layer of the skin
An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin
A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin
Potential irritants
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
Used to preserve products, dissolve other ingredients and create a nice product texture
A gelling agent that thickens the product consistency and leaves the skin with a velvety finish
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
Helps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency
Can work as an exfoliant but is typically used to adjust the product pH
A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin
Helps soften the upper layer of the skin. At the same time, it can weaken the skin's barrier enhancing penetration of other ingredients and increasing the risk of skin dryness
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)
Helps preserve products and creates a nice product texture
Comedogenic ingredients
We couldn't find any comedogenic ingredients in this product
All ingredients
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
Used to preserve products, dissolve other ingredients and create a nice product texture
Helps dissolve other ingredients in the formulation
Helps attract water to the upper layer of the skin and improves the product texture
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
A gelling agent that thickens the product consistency and leaves the skin with a velvety finish
Naturally present in skin and helps to attract water to its upper layer
Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product
Naturally present in skin and helps to attract water to its upper layer
Helps attract water to the upper layer of the skin and provide a longer-lasting hydration. Can create a thicker product consistency
Helps to retain moisture by creating a protective barrier on the skin. Rich in fatty acids. Improves product texture and helps with the penetration of other ingredients.
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
Helps to attract water to the upper layer of the skin and can help restore the skin barrier function
An amino-acid that helps attract water to the upper layer of the skin
Can work as an exfoliant but is typically used to adjust the product pH
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin
A type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin
A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin
A type of lipid that is naturally present in skin. It might help in repairing skin barrier function and has anti-bacterial effect
Helps soften the upper layer of the skin. At the same time, it can weaken the skin's barrier enhancing penetration of other ingredients and increasing the risk of skin dryness
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiome)
Helps preserve products and creates a nice product texture
Ingredient list view
Water, Butylene glycol, Propanediol, Glycerin, Sodium hyaluronate, 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
- Glycerol and the skin: holistic approach to its origin and functions
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- The influence of alkane chain length on the skin irritation potential of 1,2-alkanediols
- Dimethicone as a protective ingredient in topical medications
- Final Report on the Safety Assessment of Dimethicone Copolyol
- Topical palmitoyl pentapeptide provides improvement in photoaged human facial skin
- Combination of amino acids reduces pigmentation in B16F0 melanoma cells
- Effect of Topical Application of Glycine and Proline on Recalcitrant Leg Ulcers of Prolidase Deficiency
- Functional glycine receptor in cultured human keratinocytes
- Skin hydration is significantly increased by a cream formulated to mimic the skin’s own natural moisturizing systems
- Topically Applied Ceramides Interact with the Stratum Corneum Lipid Matrix in Compromised Ex Vivo Skin
- Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils
- https://www.sciencedirect.com/science/article/pii/0168365995000887
- Vitamin E in dermatology
- Vitamin E and Skin Health
- Epidermal and dermal effects of topical lactic acid
- Dual Effects of Alpha-Hydroxy Acids on the Skin