Versus

CommonLabs Vitamin C Brightening Sun Serum SPF50 PA++++ Versus COSRX The Vitamin C 23 Serum

Sunscreen
Serum
Korean Brand
Korean Brand

Updated on June 28, 2024

Overview

What they are

These products are both cruelty-free and reef safe . They have a total of 10 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 parabens or sulfates

What's Inside

They both contain harsh alcohols, oils and silicones

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

Click any item below to learn more and see relevant 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

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Vitamin C Brightening Sun Serum SPF50 PA++++

Water

Skin Conditioning

Dibutyl Adipate

Emollient

Diethylamino Hydroxybenzoyl Hexyl Benzoate

UV Filter
Chemical UV Filter Icon

Alcohol

Antimicrobial
Alcohol IconCan worsen Dry Skin IconMay worsen Oily Skin IconMay cause irritation IconMay worsen Eczema IconMay worsen Rosacea Icon

Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine

Skin Conditioning
Chemical UV Filter Icon

C12-15 Alkyl Benzoate

Antimicrobial

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

Phenethyl Benzoate

Emollient
Fragrance Icon

Ethylhexyl Triazone

UV Absorber
Chemical UV Filter Icon

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Isoamyl P-Methoxycinnamate

UV Absorber
Chemical UV Filter Icon

Polysilicone-15

UV Filter

Methylpropanediol

Solvent

1,2-Hexanediol

Skin Conditioning
Helps hydrate Dry Skin Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Pentylene Glycol

Skin Conditioning

Acetyl Glucosamine

Skin Conditioning

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Hydroxyacetophenone

Antioxidant
Antioxidant IconHelps reduce irritation Icon

Sodium Hyaluronate Crosspolymer

Humectant
Hyaluronic Acid IconHelps hydrate Dry Skin IconGood for Scar Healing Icon

Caprylyl Glycol

Emollient

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Cynanchum Atratum Extract

Skin Conditioning

Althaea Rosea Flower Extract

Skin Conditioning

Ethylhexylglycerin

Skin Conditioning

C30-45 Alkyldimethylsilyl Polypropylsilsesquioxane

Silicon Icon

Dibutyl Lauroyl Glutamide

Skin Conditioning

Dibutyl Ethylhexanoyl Glutamide

Skin Conditioning

Sodium Acrylates Crosspolymer-2

Absorbent

Sodium Polyacryloyldimethyl Taurate

Emulsion Stabilising

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Citrus Aurantium Bergamia Fruit Oil

Masking
Fragrance IconOil Icon

Limonene

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Linalool

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Xanthan Gum

Emulsifying

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Disodium EDTA

Hydrolyzed Hyaluronic Acid

Humectant
Hyaluronic Acid IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon

Pancratium Maritimum Extract

Bleaching

Fragaria Chiloensis Fruit Extract

Skin Conditioning
Helps hydrate Dry Skin Icon

Vaccinium Macrocarpon Fruit Extract

Astringent

Hyaluronic Acid

Humectant
Hyaluronic Acid IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon

Ascorbic Acid

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps brighten skin Icon

Linolenic Acid

Cleansing
Fragrance IconHelps hydrate Dry Skin IconHelps reduce irritation IconGood for Dark Spots IconNot safe for Fungal Acne Icon

Citrus Paradisi Fruit Extract

Skin Conditioning

Citrus Limon Fruit Extract

Masking
May cause irritation Icon

Rubus Idaeus Fruit Extract

Astringent

Citrus Aurantifolia Fruit Extract

Skin Conditioning

Citrus Junos Peel Extract

Skin Conditioning

Lactobacillus Ferment Lysate

Skin Conditioning
Not safe for Fungal Acne Icon

Citrus Unshiu Peel Extract

Masking

Riboflavin

Cosmetic Colorant

Pyridoxine

Skin Conditioning

Folic Acid

Skin Conditioning
Helps hydrate Dry Skin Icon

Pantothenic Acid

Skin Conditioning

Thiamine Hcl

Masking

Cyanocobalamin

Skin Conditioning

Biotin

Antiseborrhoeic

Linoleic Acid

Cleansing
Helps hydrate Dry Skin IconHelps reduce irritation IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Retinol

Skin Conditioning
Retinoid IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin IconMay worsen Rosacea Icon

Menadione

Masking

Glutathione

Good for Dark Spots Icon

Bioflavonoids

Skin Conditioning

Hippophae Rhamnoides Fruit Extract

Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce irritation Icon

Terminalia Ferdinandiana Fruit Extract

Antioxidant
Antioxidant Icon

Saccharide Isomerate

Humectant
Helps hydrate Dry Skin Icon

Citric Acid

Buffering
AHA IconGood for Oily Skin IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay worsen Rosacea Icon

Sodium Citrate

Buffering

Water, Dibutyl Adipate, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Alcohol, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, C12-15 Alkyl Benzoate, Silica, Phenethyl Benzoate, Ethylhexyl Triazone, Niacinamide, Isoamyl P-Methoxycinnamate, Polysilicone-15, Methylpropanediol, 1,2-Hexanediol, Glycerin, Pentylene Glycol, Acetyl Glucosamine, Sodium Hyaluronate, Hydroxyacetophenone, Sodium Hyaluronate Crosspolymer, Caprylyl Glycol, Butylene Glycol, Cynanchum Atratum Extract, Althaea Rosea Flower Extract, Ethylhexylglycerin, C30-45 Alkyldimethylsilyl Polypropylsilsesquioxane, Dibutyl Lauroyl Glutamide, Dibutyl Ethylhexanoyl Glutamide, Sodium Acrylates Crosspolymer-2, Sodium Polyacryloyldimethyl Taurate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Citrus Aurantium Bergamia Fruit Oil, Limonene, Linalool, Xanthan Gum, Tocopherol, Disodium EDTA, Hydrolyzed Hyaluronic Acid, Pancratium Maritimum Extract, Fragaria Chiloensis Fruit Extract, Vaccinium Macrocarpon Fruit Extract, Hyaluronic Acid, Ascorbic Acid, Linolenic Acid, Citrus Paradisi Fruit Extract, Citrus Limon Fruit Extract, Rubus Idaeus Fruit Extract, Citrus Aurantifolia Fruit Extract, Citrus Junos Peel Extract, Lactobacillus Ferment Lysate, Citrus Unshiu Peel Extract, Riboflavin, Pyridoxine, Folic Acid, Pantothenic Acid, Thiamine Hcl, Cyanocobalamin, Biotin, Linoleic Acid, Retinol, Menadione, Glutathione, Bioflavonoids, Hippophae Rhamnoides Fruit Extract, Terminalia Ferdinandiana Fruit Extract, Saccharide Isomerate, Citric Acid, Sodium Citrate

The Vitamin C 23 Serum

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning

Acetyl Glucosamine is an antioxidant and humectant. It is an amino acid sugar and is naturally found in our skin.

The cool thing about this ingredient? It helps the skin produce hyaluronic acid and boost hydration. It also has antioxidant benefits to protect skin cells.

When paired with niacinamide, Acetyl Glucosamine has been shown to be effective at reducing discoloration.

Learn more about Acetyl Glucosamine
Antioxidant, Buffering, Masking

Ascorbic 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 Acid
Humectant, Masking, Skin Conditioning

Butylene 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 Glycol

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA

Glutathione 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 Glutathione
Smoothing

Niacinamide 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 Niacinamide
Skin Conditioning, Solvent

Pentylene 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 Glycol
Humectant, Skin Conditioning

Sodium 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 Hyaluronate
Antioxidant, Masking, Skin Conditioning

Tocopherol (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 Tocopherol
Skin Conditioning, Solvent

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 Water

When to use

4 Routines
100% use in am
0% use in pm
100% use every day
643 Routines
76% use in am
24% use in pm
92% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

1.00
Overall rating
5
4
3
2
1
What people say
Broke Me Out 100% Heavy 100% Irritating 100%

COSRX The Vitamin C 23 Serum 34 ingredients

3.41
Overall rating
5
4
3
2
1
What people say
Oily 40% Works Well 40% Strong Scent 33%