Naturium Vitamin C Super Serum Plus Versus COSRX The Vitamin C 23 Serum
Updated on June 28, 2024
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 9 ingredients in common
Cool Features
They both contain hyaluronic acid, niacinamide, Vitamin C and Vitamin E
Suited For
They're both likely to be good for fighting acne, 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, fragrances, parabens or sulfates
What's Inside
They both contain oils
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
Naturium Vitamin C Super Serum Plus 42 ingredients
COSRX The Vitamin C 23 Serum 34 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
Naturium Vitamin C Super Serum Plus 42 ingredients
COSRX The Vitamin C 23 Serum 34 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningNiacinamide
Smoothing
Propanediol
SolventGlycerin
Humectant
Ascorbic Acid
Antioxidant
Glutathione
Aloe Barbadensis Leaf Juice
Skin Conditioning
Retinol
Skin Conditioning
Sodium Hyaluronate
Humectant
Caprylyl Glycol
EmollientHydroxyethylcellulose
Emulsion StabilisingCarbomer
Emulsion StabilisingSalicylic Acid
Masking
Tocopheryl Acetate
Antioxidant
Humulus Lupulus Extract
AntimicrobialGlyceryl Polyacrylate
Potassium Sorbate
Preservative
Copernicia Cerifera Wax
Hexylene Glycol
EmulsifyingSorbitol
Humectant
Sodium Hydroxide
BufferingSorbitan Oleate
Emulsifying
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
Emulsion StabilisingHelianthus Annuus Seed Oil
Emollient
Phenoxyethanol
Preservative
Isohexadecane
EmollientPolysorbate 80
Emulsifying
Polysorbate 20
Emulsifying
1,2-Hexanediol
Skin ConditioningAmylopectin
Dextrin
AbsorbentPolydextrose
HumectantDisodium Cocoamphodiacetate
CleansingXanthan Gum
EmulsifyingTocopherol
Antioxidant
Citric Acid
Buffering
Sodium Benzoate
Masking
Disodium Phosphate
BufferingGold
Cosmetic ColorantPolysorbate 60
Emulsifying
Ethyl Ferulate
Antioxidant
Sodium Phosphate
BufferingWater, Niacinamide, Propanediol, Glycerin, Ascorbic Acid, Glutathione, Aloe Barbadensis Leaf Juice, Retinol, Sodium Hyaluronate, Caprylyl Glycol, Hydroxyethylcellulose, Carbomer, Salicylic Acid, Tocopheryl Acetate, Humulus Lupulus Extract, Glyceryl Polyacrylate, Potassium Sorbate, Copernicia Cerifera Wax, Hexylene Glycol, Sorbitol, Sodium Hydroxide, Sorbitan Oleate, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Helianthus Annuus Seed Oil, Phenoxyethanol, Isohexadecane, Polysorbate 80, Polysorbate 20, 1,2-Hexanediol, Amylopectin, Dextrin, Polydextrose, Disodium Cocoamphodiacetate, Xanthan Gum, Tocopherol, Citric Acid, Sodium Benzoate, Disodium Phosphate, Gold, Polysorbate 60, Ethyl Ferulate, Sodium Phosphate
Water
Skin ConditioningAscorbic Acid 23%
Antioxidant
Propanediol
SolventDimethicone
Emollient
Tromethamine
BufferingPanthenol
Skin Conditioning
Ethyl Ether
SolventSqualane
Emollient
Caffeine
Skin ConditioningSodium Chloride
Masking
Sodium Hyaluronate
Humectant
Sodium Sulfite
Preservative
Disodium EDTA
Glutathione
Adenosine
Skin Conditioning
Acetyl Glucosamine
Skin ConditioningGardenia Florida Fruit Extract
Skin ConditioningAllantoin
Skin Conditioning
Dextrin
AbsorbentTocotrienols
Skin ConditioningTocopherol
Antioxidant
Elaeis Guineensis Oil
Emollient
Butylene Glycol
Humectant
Arginine
Masking
Niacinamide
Smoothing
Pentylene Glycol
Skin ConditioningAlcohol Denat.
Antimicrobial
Helianthus Annuus Seed Oil
Emollient
Glycyrrhiza Glabra Root Extract
Bleaching
Methyl Trimethicone
Skin Conditioning
Carthamus Tinctorius Seed Oil
Masking
Camellia Japonica Seed Oil
Emollient
Daucus Carota Sativa Root Extract
Skin ConditioningBeta-Carotene
Skin ConditioningWater, Ascorbic Acid 23%, Propanediol, Dimethicone, Tromethamine, Panthenol, Ethyl Ether, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis Guineensis Oil, Butylene Glycol, Arginine, Niacinamide, Pentylene Glycol, Alcohol Denat., Helianthus Annuus Seed Oil, Glycyrrhiza Glabra Root Extract, Methyl Trimethicone, Carthamus Tinctorius Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa Root Extract, Beta-Carotene
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 WaterNiacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamidePropanediol 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 PropanediolAscorbic Acid is is pure Vitamin C. This form makes up the largest amount of vitamin C found naturally in our skin.
Not only is vitamin C great for your overall health and immune system, it also has plenty of benefits on your skin.
Vitamin C is best used for brightening skin. It improves dark spots, acne scars, and hyperpigmentation. This is because it blocks the process of skin darkening when exposed to UV.
Remember: Vitamin C should not replace sunscreen!
Your skin uses vitamin C to build collagen. Collagen is one key component in having a strong skin barrier and plump skin. Vitamin C also plays a role in regulating collagen, thus making it effective in improving wrinkles and fine lines.
Ascorbic acid shows potent antioxidant activity. As an antioxidant, it helps fight free-radicals. Free-radicals are molecules that may damage your skin cells. These antioxidants also protect skin against UV damage.
The best formulations include Vitamin E and/or ferulic acid. These two ingredients help stabilize and provide a boost in the benefits of ascorbic acid. This is because ascorbic acid becomes unstable when exposed to UV and air. In fact, you can tell your ascorbic acid has oxidized when it turns an orange-yellow color.
Ascorbic acid is generally compatible with other ingredients. However, using ascorbic acid with other active ingredients might cause irritation. Two ingredients: copper ions and benzoyl peroxide, will inactivate ascorbic acid completely.
Read more about other types of Vitamin C:
Foods rich with vitamin C include oranges, strawberries, broccoli, bell peppers, and more. When consuming Vitamin C, your skin receives a portion of the nutrients.
Learn more about Ascorbic AcidGlutathione is an antioxidant naturally found in our bodies. It is made up of three amino acids: glycine, cysteine, and glutamic acid.
As an antioxidant, it prevents oxidative damage to parts of our cell.
While glutathione is said to help with fading dark spots, the results from research are inconclusive. Further studies are needed. With that said, gluthatione has been shown to protect our skin from UV-B induced damage.
This ingredient is naturally occurring in plants, animals, fungi, and some bacteria.
Learn more about GlutathioneSodium 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 HyaluronateHelianthus Annuus Seed Oil is the oil derived from the seeds of a Sunflower. Sunflower seed oil is non-fragrant. It is an emollient, meaning it helps to soften the skin.
Sunflower seed oil contains many fatty acids. The fatty acids found in sunflower seeds include (from highest amount to least): linoleic acid, myristic acid, palmitic acid, stearic acid, arachidic acid, oleic acid, and linolenic acid.
These fatty acids help the skin create ceramides. Ceramides play a role in repairing the skin barrier.
Helianthus Annuus Seed Oil helps moisturize the skin. This in turn helps the skin look more rejuvenated and smoother.
Sunflowers are rich in vitamin E.
Historians believe Indigenous cultures of North America domesticated sunflowers before corn. Thus they relied on sunflower oil for a variety of uses. One such use is moisturizing skin and hair.
Sunflower seed oil may not be fungal acne safe. We recommend speaking with a professional if you have any concerns.
Learn more about Helianthus Annuus Seed OilDextrin is used to thicken a product and helps bind ingredients together. It is created from starch and glycogen.
As an emulsifier, dextrin prevents ingredients from separating. This helps elongate a product's shelf life.
Studies show coating UV filters with dextrin prevents these ingredients from being absorbed. This helps UV ingredients last longer on the skin.
Learn more about DextrinTocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Naturium Vitamin C Super Serum Plus 42 ingredients
COSRX The Vitamin C 23 Serum 34 ingredients
Reviews
Here's what our community thinks
Naturium Vitamin C Super Serum Plus 42 ingredients
I have pretty resistant skin and this happened to break me out very quickly. I have reverted back to vitamin C serum!
I prefer the regular vitamin c by this brand. But this one is ok.
COSRX The Vitamin C 23 Serum 34 ingredients
I didn't like the consistency of this serum at all.
It felt like I was putting oil to my face, but since I always use the whole product to see results this did nothing to me other than feeling uncomfortable.
Cured my acne scars
I had mix feelings when I first bought this as I read that the smell can be off-putting. But I am glad I bought it. My acne scars faded a lot more after 3 days of using it and saw great results in one week. It also didn't break me out despite containing alcohols and oils. It does sting a little on the first application but doesn't irritate my skin. The smell can be quite strong Show more
