Benton Vitamin C Serum Versus Remedy For Daily Defense 15% Vitamin C Antioxidant Complex Brightening Serum
This brightening serum is formulated around Ascorbic Acid and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and soften the look of wrinkles.
This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Ferulic Acid to brighten dull-looking skin and calm redness.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Propanediol
Solvent
Ascorbic Acid
Antioxidant
Butylene Glycol
Humectant
Glycerin
Humectant
Pentylene Glycol
Skin Conditioning
Candida Bombicola/Glucose/Methyl Rapeseedate Ferment
AntimicrobialGlyceryl Glucoside
Humectant
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Panthenol
Skin Conditioning
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Prunus Armeniaca Kernel Oil
Masking
Sodium Polyacrylate
Absorbent
Polyquaternium-10
Adenosine
Skin Conditioning
Ferulic Acid
Antimicrobial
Ectoin
Skin Conditioning
Glutathione
Oryza Sativa Bran Oil
Emollient
Tocotrienols
Skin Conditioning
Tocopherol
Antioxidant
Propanediol, Ascorbic Acid, Butylene Glycol, Glycerin, Pentylene Glycol, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Glyceryl Glucoside, 3-O-Ethyl Ascorbic Acid, Panthenol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Prunus Armeniaca Kernel Oil, Sodium Polyacrylate, Polyquaternium-10, Adenosine, Ferulic Acid, Ectoin, Glutathione, Oryza Sativa Bran Oil, Tocotrienols, Tocopherol
Water
Skin Conditioning3-O-Ethyl Ascorbic Acid
Skin Conditioning
Glycerin
Humectant
Propanediol
Solvent
Squalane
Emollient
C12-15 Alkyl Lactate
EmollientButylene Glycol
Humectant
Aloe Barbadensis Leaf Juice
Skin Conditioning
Polyglyceryl-10 Laurate
Skin Conditioning
Hydrolyzed Hyaluronic Acid
Humectant
Allantoin
Skin Conditioning
Panthenol
Skin Conditioning
Escin
TonicRuscus Aculeatus Root Extract
Astringent
Ammonium Glycyrrhizate
MaskingCentella Asiatica Leaf Extract
Skin Conditioning
Hydrolyzed Yeast Protein
Skin ConditioningCalendula Officinalis Flower Extract
Masking
Tocopheryl Acetate
Antioxidant
Acetyl Zingerone
Antioxidant
Superoxide Dismutase
Antioxidant
Ergothioneine
Antioxidant
Plankton Extract
Skin ConditioningSpirulina Platensis Extract
Skin ProtectingBifida Ferment Lysate
Skin Conditioning
Ferulic Acid
Antimicrobial
Ectoin
Skin Conditioning
1,2-Hexanediol
Skin Conditioning
Curcuma Longa Root Extract
Antioxidant
Glycyrrhiza Glabra Root Extract
Bleaching
Camellia Sinensis Leaf Extract
Antimicrobial
Hydroxyacetophenone
Antioxidant
Trisodium Ethylenediamine Disuccinate
ChelatingSodium Citrate
BufferingCitric Acid
Buffering
Sodium Hydroxide
BufferingSodium Benzoate
Masking
Potassium Sorbate
Preservative
Leuconostoc/Radish Root Ferment Filtrate
Antimicrobial
Phenoxyethanol
Preservative
Ethylhexylglycerin
Skin ConditioningWater, 3-O-Ethyl Ascorbic Acid, Glycerin, Propanediol, Squalane, C12-15 Alkyl Lactate, Butylene Glycol, Aloe Barbadensis Leaf Juice, Polyglyceryl-10 Laurate, Hydrolyzed Hyaluronic Acid, Allantoin, Panthenol, Escin, Ruscus Aculeatus Root Extract, Ammonium Glycyrrhizate, Centella Asiatica Leaf Extract, Hydrolyzed Yeast Protein, Calendula Officinalis Flower Extract, Tocopheryl Acetate, Acetyl Zingerone, Superoxide Dismutase, Ergothioneine, Plankton Extract, Spirulina Platensis Extract, Bifida Ferment Lysate, Ferulic Acid, Ectoin, 1,2-Hexanediol, Curcuma Longa Root Extract, Glycyrrhiza Glabra Root Extract, Camellia Sinensis Leaf Extract, Hydroxyacetophenone, Trisodium Ethylenediamine Disuccinate, Sodium Citrate, Citric Acid, Sodium Hydroxide, Sodium Benzoate, Potassium Sorbate, Leuconostoc/Radish Root Ferment Filtrate, Phenoxyethanol, Ethylhexylglycerin
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
3-O-Ethyl Ascorbic Acid is one of the most popular "stable" vitamin C derivatives in skincare.
Plain ascorbic acid is fantastic but notoriously fragile; it browns, oxidizes, and loses potency fast. So attaching an ethyl group to the third carbon of the molecule gives it some cool perks:
In a formula, it does the 3 classic vitamin C jobs: it acts as an antioxidant, helps brighten skin tone by inhibiting tyrosinase, and supports collagen.
The evidence is reasonably solid for a cosmetic ingredient; Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective.
A 2021 study by Zerbinati and colleagues tested a serum with 30% 3-O-ethyl-l-ascorbic acid and 1% lactic acid significantly increased collagen production, reduced UVB-induced DNA damage, and decreased melanin on a reconstructed pigmented skin model.
Typical real world usage sits around 0.5-5% (and 1-2% is common for daily serums).
Amounts up to 30% have been shown to be non-irritating on human skin samples, but two isolated cases reported allergic contact dermatitis so a patch test is sensible if you have reactive skin.
Learn more about 3-O-Ethyl Ascorbic AcidButylene 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 GlycolEctoin is a compound found naturally in some species of bacteria. It can be synthetically created for skincare use.
This ingredient is an osmolyte; Osmolytes help organisms survive osmotic shock (it protects them from extreme conditions). It does this by influencing the properties of biological fluids within cells.
When applied to the skin, ectoin helps bind water molecules to protect our skin. The water forms a sort of armor for the parts of our skin cells, enzymes, proteins, and more.
Besides this, ectoin has many uses in skincare:
A study from 2004 found ectoin to counteract the damage from UV-A exposure at different cell levels. It has also been shown to protect skin against both UV-A, UV-B rays, infrared light, and visible light.
Studies show ectoin to have dual-action pollution protection: first, it protects our skin from further pollution damage. Second, it helps repair damage from pollution.
In fact, ectoin has been shown to help with:
Fun fact: In the EU, ectoin is used in inhalation medication as an anti-pollution ingredient.
Ectoin is a highly stable ingredient. It has a wide pH range of 1-9. Light, oxygen, and temperature do not affect this ingredient.
The chemical name for this ingredient is Tetrahydromethylpyrimidine Carboxylic Acid.
Learn more about EctoinFerulic Acid is a plant based antioxidant that can be naturally found in the cell walls of grains like rice, oats, and corn. It has antioxidant and antimicrobial properties, and has the ability to boost the performance of other antioxidants as well.
A well-known study found that adding Ferulic Acid to a solution of Vitamins C and E doubled the photoprotection of skin. This is why you'll often see it paired with Vitamin C or Vitamin E serums rather than sold on its own.
A 2025 review of 18 human studies found that using Ferulic Acid (0.5-1%) daily for one to three months showed improvements in:
As far as allergies go, Ferulic acid is generally well-tolerated but can cause an allergic reaction in very rare cases. It's also worth noting that Ferulic acid is often extracted from plant sources like rice bran or wheat bran, so be sure to path test if you have known grain allergies.
Outside of skincare, researchers are also looking into Ferulic Acid for its potential benefits in areas like diabetes, Alzheimer's, and heart health.
Learn more about Ferulic AcidGlycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
Topically, glycerin does several things at once:
Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
Just know very high concentrations (>40%) can feel tacky in low humidity.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinPanthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Learn more about PanthenolPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
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 Propanediol
