COSRX The Vitamin C 13 Serum Versus The Ordinary Caffeine Solution 5% + EGCG
Updated on June 23, 2025
Overview
What they are
These products are both cruelty-free and reef safe . They have a total of 3 ingredients in common
Cool Features
They both contain hyaluronic acid
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 parabens, silicones 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 Vitamin C 13 Serum 25 ingredients
The Ordinary Caffeine Solution 5% + EGCG 25 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 Vitamin C 13 Serum 25 ingredients
The Ordinary Caffeine Solution 5% + EGCG 25 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningAscorbic Acid 13%
Antioxidant
Butylene Glycol
Humectant
Dipropylene Glycol
MaskingTromethamine
Buffering3-O-Ethyl Ascorbic Acid
Skin Conditioning
Panthenol
Skin Conditioning
Acetyl Glucosamine
Skin ConditioningCaffeine
Skin Conditioning
Sodium Hyaluronate
Humectant
Sodium Sulfite
Preservative
Disodium EDTA
Glutathione
Adenosine
Skin Conditioning
Gardenia Florida Fruit Extract
Skin ConditioningAllantoin
Skin Conditioning
Dextrin
AbsorbentSqualane
Emollient
Tocotrienols
Skin ConditioningTocopherol
Antioxidant
Elaeis Guineensis Oil
Emollient
Arginine
Masking
Niacinamide
Smoothing
Pentylene Glycol
Skin ConditioningGlycyrrhiza Glabra Root Extract
Bleaching
Water, Ascorbic Acid 13%, Butylene Glycol, Dipropylene Glycol, Tromethamine, 3-O-Ethyl Ascorbic Acid, Panthenol, Acetyl Glucosamine, Caffeine, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Squalane, Tocotrienols, Tocopherol, Elaeis Guineensis Oil, Arginine, Niacinamide, Pentylene Glycol, Glycyrrhiza Glabra Root Extract
Water
Skin ConditioningCaffeine
Skin Conditioning
Maltodextrin
Absorbent
Glycerin
Humectant
Propanediol
Solvent
Epigallocatechin Gallatyl Glucoside
Antioxidant
Gallyl Glucoside
Antioxidant
Hyaluronic Acid
Humectant
Oxidized Glutathione
EmollientMelanin
Skin ProtectingGlycine Soja Seed Extract
Skin Conditioning
Pentylene Glycol
Skin ConditioningHydroxyethylcellulose
Emulsion StabilisingPolyacrylate Crosspolymer-6
Emulsion StabilisingXanthan Gum
EmulsifyingLactic Acid
Buffering
Dehydroacetic Acid
Preservative
Trisodium Ethylenediamine Disuccinate
Propyl Gallate
Antioxidant
Dimethyl Isosorbide
SolventBenzyl Alcohol
Perfuming
1,2-Hexanediol
Skin Conditioning
Ethylhexylglycerin
Skin ConditioningPhenoxyethanol
Preservative
Caprylyl Glycol
EmollientWater, Caffeine, Maltodextrin, Glycerin, Propanediol, Epigallocatechin Gallatyl Glucoside, Gallyl Glucoside, Hyaluronic Acid, Oxidized Glutathione, Melanin, Glycine Soja Seed Extract, Pentylene Glycol, Hydroxyethylcellulose, Polyacrylate Crosspolymer-6, Xanthan Gum, Lactic Acid, Dehydroacetic Acid, Trisodium Ethylenediamine Disuccinate, Propyl Gallate, Dimethyl Isosorbide, Benzyl Alcohol, 1,2-Hexanediol, Ethylhexylglycerin, 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.
Caffeine is most associated with coffee, tea, and cacao. In skincare, it helps with calming inflammation and is rich in antioxidants.
While caffeine is used to treat cellulite and and dark circles, further studies are needed to prove this. It has been believed to help with these skin conditions due to its ability to dilate blood vessels and increase blood flow.
Some studies are looking into caffeine's ability to protect against UV rays.
Learn more about CaffeinePentylene 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 GlycolWater. 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
Here's what our community thinks of the ingredients in these products.
When to use
COSRX The Vitamin C 13 Serum 25 ingredients
The Ordinary Caffeine Solution 5% + EGCG 25 ingredients
Reviews
Here's what our community thinks
