Murad Vitamin C Glycolic Brightening Serum Versus Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
Updated on June 30, 2025
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 7 ingredients in common
Cool Features
They both contain AHA, Vitamin C and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening 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 fragrances
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
Murad Vitamin C Glycolic Brightening Serum 53 ingredients
Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Murad Vitamin C Glycolic Brightening Serum 53 ingredients
Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycolic Acid
Buffering
Glycerin
Humectant
Caprylic/Capric Triglyceride
Masking
Dimethicone
Emollient
Sodium Hydroxide
BufferingHdi/Trimethylol Hexyllactone Crosspolymer
Diisopropyl Sebacate
EmollientC13-16 Isoparaffin
Solvent
Polyacrylate Crosspolymer-6
Emulsion StabilisingDimethyl Isosorbide
SolventAscorbic Acid
Antioxidant
Urea
Buffering
Yeast Amino Acids
HumectantTrehalose
Humectant
Inositol
Humectant
Taurine
BufferingBetaine
Humectant
Glutathione
Tetrahexyldecyl Ascorbate
Antioxidant
Cetearyl Isononanoate
EmollientHydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingOleyl Alcohol
Emollient
Silica
Abrasive
Hexylresorcinol
Antimicrobial
Polysilicone-11
Triheptanoin
Skin ConditioningPolyisobutene
Marrubium Vulgare Meristem Cell Culture
Skin ProtectingZanthoxylum Bungeanum Fruit Extract
Skin ConditioningHydrolyzed Verbascum Thapsus Flower
Antioxidant
Butylene Glycol
Humectant
Mica
Cosmetic Colorant
Hexylene Glycol
EmulsifyingSodium Surfactin
CleansingXymenynic Acid
EmollientTocopheryl Acetate
Antioxidant
PEG-7 Trimethylolpropane Coconut Ether
EmulsifyingTerminalia Ferdinandiana Fruit Extract
Antioxidant
Sorbitol
Humectant
Tin Oxide
Abrasive
Xanthan Gum
EmulsifyingT-Butyl Alcohol
Perfuming
Chlorella Vulgaris Extract
Skin Conditioning
Decyl Glucoside
CleansingGold
Cosmetic ColorantCitric Acid
Buffering
Caprylyl Glycol
EmollientPhenoxyethanol
Preservative
Ethylhexylglycerin
Skin ConditioningSodium Benzoate
Masking
Potassium Sorbate
Preservative
CI 77891
Cosmetic ColorantWater, Glycolic Acid, Glycerin, Caprylic/Capric Triglyceride, Dimethicone, Sodium Hydroxide, Hdi/Trimethylol Hexyllactone Crosspolymer, Diisopropyl Sebacate, C13-16 Isoparaffin, Polyacrylate Crosspolymer-6, Dimethyl Isosorbide, Ascorbic Acid, Urea, Yeast Amino Acids, Trehalose, Inositol, Taurine, Betaine, Glutathione, Tetrahexyldecyl Ascorbate, Cetearyl Isononanoate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Oleyl Alcohol, Silica, Hexylresorcinol, Polysilicone-11, Triheptanoin, Polyisobutene, Marrubium Vulgare Meristem Cell Culture, Zanthoxylum Bungeanum Fruit Extract, Hydrolyzed Verbascum Thapsus Flower, Butylene Glycol, Mica, Hexylene Glycol, Sodium Surfactin, Xymenynic Acid, Tocopheryl Acetate, PEG-7 Trimethylolpropane Coconut Ether, Terminalia Ferdinandiana Fruit Extract, Sorbitol, Tin Oxide, Xanthan Gum, T-Butyl Alcohol, Chlorella Vulgaris Extract, Decyl Glucoside, Gold, Citric Acid, Caprylyl Glycol, Phenoxyethanol, Ethylhexylglycerin, Sodium Benzoate, Potassium Sorbate, CI 77891
Water
Skin ConditioningTetrahexyldecyl Ascorbate
Antioxidant
Squalane
Emollient
Polyglyceryl-6 Distearate
Emulsifying
PEG-8 Beeswax
Emulsifying
PPG-12/Smdi Copolymer
EmollientGlycine Soja Sterols
Emollient
Sodium Phytate
Tocopherol
Antioxidant
Acetamidoethoxyethanol
Humectant
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingSodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingJojoba Esters
Emollient
Glycolic Acid
Buffering
Caprylyl Glycol
EmollientCetyl Alcohol
Emollient
Polyglyceryl-3 Beeswax
Emulsifying
Chlorphenesin
Antimicrobial
Glycerin
Humectant
Polysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Saccharide Isomerate
Humectant
Citrus Aurantium Dulcis Peel Oil
Masking
Citrus Tangerina Peel Oil
Masking
Linalool
Perfuming
Limonene
Perfuming
Phenoxyethanol
Preservative
Water, Tetrahexyldecyl Ascorbate, Squalane, Polyglyceryl-6 Distearate, PEG-8 Beeswax, PPG-12/Smdi Copolymer, Glycine Soja Sterols, Sodium Phytate, Tocopherol, Acetamidoethoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Glycolic Acid, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Chlorphenesin, Glycerin, Polysorbate 60, Sorbitan Isostearate, Saccharide Isomerate, Citrus Aurantium Dulcis Peel Oil, Citrus Tangerina Peel Oil, Linalool, Limonene, Phenoxyethanol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolGlycerin 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 GlycerinGlycolic Acid is arguably the most famous AHA with a ton of research to back up its benefits.
Its main role is to remove the top layer of dead skin cells, allowing newer skin cells to emerge.
Specifically, AHAs work by breaking down the structural "glue" holding the old skin cells in place. Getting rid of the old skin cells allows skin to regenerate newer skin cells in its place. A build up of dead skin cells can lead to tired and dull looking skin.
Due to this, glycolic acid helps with:
Fun fact: Glycolic acid increases skin hydration by playing a role in creating molecules that create hyaluronic acid naturally.
When starting glycolic Acid, it is normal to feel slight stinging.
The pH value and concentration of glycolic acid play a role in the effectiveness of the product. Concentrations between 5-20% glycolic acid have been shown to be effective in clinical studies.
Recent studies have shown Glycolic Acid may protect the skin against UV damage. However, you should always wear SPF, especially when using exfoliants.
Read more about some other popular AHA's here:
Learn more about Glycolic AcidThis is a synthetic polymer. It helps improve the texture of products by adding thickness and gel-like feel.
It is also an emulsifer, meaning it prevents ingredients such as oil and water from separating. It also helps evenly disperse other ingredients.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Tetrahexyldecyl Ascorbate (THD) is a stable and oil-soluble form of Vitamin C.
THD is special in that it has the ability to travel deeper into skin than traditional ascorbic acid while maintaining the same skin benefits (double win!).
Because it’s oil-soluble, THD dives deep into your skin’s fatty layers (think ceramides and cholesterol) to fight off the kind of free radicals that mess with your skin barrier. This makes it a great pair with water-based vitamin C (ascorbic acid) that mainly works on the surface.
Even at just 0.1%, THD is already showing great antioxidant activity. When used up to 2%, it helps keep your skin happy and calm, especially when it’s stressed from pollution or sun.
Want to fade dark spots or tackle hyperpigmentation? You’ll want 5% or more. Pairing it with brightening buddies like niacinamide or licorice root gives even better results. One study even used 30% THD with other brighteners and saw real results on stubborn discoloration, even in melasma-prone skin.
A note on THD: It’s has a slightly silky, oily texture and usually shows up colorless or pale yellow (though the exact shade can vary by supplier).
While you can sneak it into water-based formulas, it really shines when paired with silicones or oils, which help your skin soak it up better.
THD is pretty stable, but it’s still vulnerable to degradation like ascorbic acid. Too much light or heat (above 113°F / 45°C) can break it down over time. Go for dark and opaque packaging that keeps it safe and shady!
Read more about other types of Vitamin C:
Learn more about Tetrahexyldecyl AscorbateWater. 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
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Murad Vitamin C Glycolic Brightening Serum 53 ingredients
Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients
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