Updated on August 07, 2024
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 1 ingredients in common
Cool Features
They both contain Vitamin C and Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, reducing pores, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, 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
Theramid C-Tetra E.F. 21 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
COSRX The Vitamin C 13 Serum 25 ingredients
Theramid C-Tetra E.F. 21 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 ConditioningSodium 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 ConditioningAscorbyl Tetraisopalmitate
Antioxidant
Propanediol
SolventAscorbyl Glucoside
Antioxidant
Glycerin
Humectant
Tricaprylin
Masking
Methylpropanediol
SolventGlycine Soja Seed Extract
Skin ConditioningTocopheryl Acetate
Antioxidant
Ascorbyl Methylsilanol Pectinate
Antioxidant
Ferulic Acid
Antimicrobial
Lecithin
EmollientSclerotium Gum
Emulsion StabilisingPullulan
Xanthan Gum
EmulsifyingSilica
Abrasive
Sodium Hydroxide
BufferingSodium Citrate
BufferingCitric Acid
Buffering
Sodium Benzoate
Masking
Potassium Sorbate
Preservative
Water, Ascorbyl Tetraisopalmitate, Propanediol, Ascorbyl Glucoside, Glycerin, Tricaprylin, Methylpropanediol, Glycine Soja Seed Extract, Tocopheryl Acetate, Ascorbyl Methylsilanol Pectinate, Ferulic Acid, Lecithin, Sclerotium Gum, Pullulan, Xanthan Gum, Silica, Sodium Hydroxide, Sodium Citrate, Citric Acid, Sodium Benzoate, Potassium Sorbate
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 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
Theramid C-Tetra E.F. 21 ingredients
Reviews
Here's what our community thinks
COSRX The Vitamin C 13 Serum 25 ingredients
Theramid C-Tetra E.F. 21 ingredients
feels really nice and absorbs well but didn't see any differences in my skin after going through 3 bottles
