Dear, Klairs Rich Moist Soothing Serum Versus COSRX The Hyaluronic Acid 3 Serum
Updated on June 03, 2024
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 10 ingredients in common
Cool Features
They both contain hyaluronic acid and Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any common allergens, 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
Dear, Klairs Rich Moist Soothing Serum 41 ingredients
COSRX The Hyaluronic Acid 3 Serum 43 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
Dear, Klairs Rich Moist Soothing Serum 41 ingredients
COSRX The Hyaluronic Acid 3 Serum 43 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningButylene Glycol
Humectant
Dimethyl Sulfone
Solvent
Betaine
Humectant
Propanediol
Solvent
Disodium EDTA
Glycyrrhiza Glabra Root Extract
Bleaching
Centella Asiatica Extract
Cleansing
Arginine
Masking
Carbomer
Emulsion Stabilising1,2-Hexanediol
Skin Conditioning
Chlorphenesin
Antimicrobial
Tocopheryl Acetate
Antioxidant
PEG-60 Hydrogenated Castor Oil
Emulsifying
Paeonia Suffruticosa Root Extract
Skin ProtectingIllicium Verum Fruit Extract
Perfuming
Nelumbium Speciosum Flower Extract
Skin ConditioningCitrus Paradisi Fruit Extract
Skin ConditioningScutellaria Baicalensis Root Extract
AstringentGlycerin
Humectant
Sodium Hyaluronate
Humectant
Panthenol
Skin Conditioning
Luffa Cylindrica Fruit/Leaf/Stem Extract
Skin ConditioningAloe Barbadensis Leaf Extract
Emollient
Althaea Rosea Flower Extract
Skin ConditioningPortulaca Oleracea Extract
Skin Conditioning
Polyquaternium-51
Skin Conditioning
Apium Graveolens Extract
Skin ConditioningBrassica Rapa Leaf Extract
Skin ConditioningOryza Sativa Bran Extract
Skin Conditioning
Brassica Oleracea Capitata Leaf Extract
Skin ConditioningDaucus Carota Sativa Root Extract
Skin Conditioning
Brassica Oleracea Italica Extract
AstringentSolanum Lycopersicum Fruit/Leaf/Stem Extract
AstringentBeta-Glucan
Skin Conditioning
Lysine Hcl
Skin Conditioning
Sodium Ascorbyl Phosphate
Antioxidant
Acetyl Methionine
Skin Conditioning
Theanine
Emollient
Proline
Skin ConditioningNatto Gum
Water, Butylene Glycol, Dimethyl Sulfone, Betaine, Propanediol, Disodium EDTA, Glycyrrhiza Glabra Root Extract, Centella Asiatica Extract, Arginine, Carbomer, 1,2-Hexanediol, Chlorphenesin, Tocopheryl Acetate, PEG-60 Hydrogenated Castor Oil, Paeonia Suffruticosa Root Extract, Illicium Verum Fruit Extract, Nelumbium Speciosum Flower Extract, Citrus Paradisi Fruit Extract, Scutellaria Baicalensis Root Extract, Glycerin, Sodium Hyaluronate, Panthenol, Luffa Cylindrica Fruit/Leaf/Stem Extract, Aloe Barbadensis Leaf Extract, Althaea Rosea Flower Extract, Portulaca Oleracea Extract, Polyquaternium-51, Apium Graveolens Extract, Brassica Rapa Leaf Extract, Oryza Sativa Bran Extract, Brassica Oleracea Capitata Leaf Extract, Daucus Carota Sativa Root Extract, Brassica Oleracea Italica Extract, Solanum Lycopersicum Fruit/Leaf/Stem Extract, Beta-Glucan, Lysine Hcl, Sodium Ascorbyl Phosphate, Acetyl Methionine, Theanine, Proline, Natto Gum
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
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Stay hydrated!
Learn more about WaterButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolBetaine is a common humectant (a substance that promotes retention of moisture). It's known to be gentle on the skin and can help balance hydration.
This ingredient is best for improving hydration and soothing irritated skin. Studies also show it helps even out skin tone.
Fun fact: Betaine is naturally created in the skin and body. The kind found within cosmetic products can be either plant-derived or synthetic.
Learn more about BetainePropanediol 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 PropanediolArginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.
As a cosmetic ingredient, Arginine has antioxidant properties and can also help repair damaged skin. This ingredient is derived either synthetically or from animals.
Arginine isn't fungal acne safe when used in the presence of other lipids (fats, fatty acids, oils, esters, etc). Oils and fats occur naturally within the skin, so take caution when using Arginine if you're prone to fungal acne.
Learn more about Arginine1,2-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
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 GlycerinSodium 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 HyaluronateLysine HCl is an alpha amino acid salt.
Our skin uses amino acids as a precursor for building protein, and therefore keratins, collagen and elastin.
Proline is an amino-acid. It helps moisturize the skin and plays an important role in creating proteins.
Our skin uses proline as one of the building blocks for producing collagen.
In medicine, proline is used as an osmoprotectant. This means it helps prevent oxidative degradation in other drugs.
Our bodies are able to produce proline naturally, but certain conditions may inhibit this production. In that case, proline can be obtained from eating egg whites, soy protein, dairy products, asparagus, mushrooms, and seaweed.
Learn more about ProlineIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Dear, Klairs Rich Moist Soothing Serum 41 ingredients
COSRX The Hyaluronic Acid 3 Serum 43 ingredients
Reviews
Here's what our community thinks
Dear, Klairs Rich Moist Soothing Serum 41 ingredients
Good for normal skin
Good product, but nothing exceptional. To be used as a light moisturiser (watery texture) if you have no special needs.
It's hydrating and made my skin smoother
COSRX The Hyaluronic Acid 3 Serum 43 ingredients
Made my skin glow but caused me to breakout towards the end. (Could be the Oleic Acid or my skin just doesn't like Hyaluronic Acid anymore) Thankfully, I'm almost done with this product. If you use a moisturiser that has Hyaluronic Acid or its variant, you probably don't need this.
