Medik8 Daily Radiance Vitamin C Versus Elemis Pro-Collagen Morning Matrix
Medik8 Daily Radiance Vitamin C Versus Elemis Pro-Collagen Morning Matrix This brightening day moisturizer is formulated around Tetrahexyldecyl Ascorbate and Tocopheryl Acetate to brighten dull-looking skin and soften the look of wrinkles. This anti-aging day
Medik8 Daily Radiance Vitamin C Versus Elemis Pro-Collagen Morning Matrix
This brightening day moisturizer is formulated around Tetrahexyldecyl Ascorbate and Tocopheryl Acetate to brighten dull-looking skin and soften the look of wrinkles.
This anti-aging day moisturizer is formulated around Squalane to soften the look of wrinkles and hydrate skin.
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Tetrahexyldecyl Ascorbate
Diethylamino Hydroxybenzoyl Hexyl Benzoate
Dibutyl Adipate
Dimethicone
Ethylhexyl Triazone
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine
C12-15 Alkyl Benzoate
Dicaprylyl Carbonate
Cetearyl Alcohol
Glycerin
Coco-Glucoside
Phenoxyethanol
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Cetearyl Glucoside
Tocopheryl Acetate
Hydroxyacetophenone
Disodium EDTA
Benzoic Acid
Xanthan Gum
Citrus Grandis Peel Oil
Sodium Hydroxide
Dehydroacetic Acid
Sodium Hyaluronate
Citrus Limon Peel Oil
Citrus Aurantium Bergamia Fruit Oil
Pelargonium Graveolens Flower Oil
Ethylhexylglycerin
Limonene
Citronellol
Linalool
Geraniol
Citral
Water, Tetrahexyldecyl Ascorbate, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Dibutyl Adipate, Dimethicone, Ethylhexyl Triazone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, C12-15 Alkyl Benzoate, Dicaprylyl Carbonate, Cetearyl Alcohol, Glycerin, Coco-Glucoside, Phenoxyethanol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Cetearyl Glucoside, Tocopheryl Acetate, Hydroxyacetophenone, Disodium EDTA, Benzoic Acid, Xanthan Gum, Citrus Grandis Peel Oil, Sodium Hydroxide, Dehydroacetic Acid, Sodium Hyaluronate, Citrus Limon Peel Oil, Citrus Aurantium Bergamia Fruit Oil, Pelargonium Graveolens Flower Oil, Ethylhexylglycerin, Limonene, Citronellol, Linalool, Geraniol, Citral
Vegetable Oil
Propanediol
Behenyl Alcohol
Squalane
Octyldodecanol
Butylene Glycol
Helianthus Annuus Seed Oil
Beheneth-25
Glyceryl Acrylate/Acrylic Acid Copolymer
Lavandula Angustifolia Oil
Dunaliella Salina Extract
Rhizobian Gum
Lavandula Hybrida Oil
Padina Pavonica Thallus Extract
Eucalyptus Globulus Leaf Oil
Chlorphenesin
Plankton Extract
Anthemis Nobilis Flower Oil
Potassium Sorbate
Sodium Benzoate
Caramel
Mentha Arvensis Leaf Oil
Tocopherol
Collagen Amino Acids
Caprylyl Glycol
Citrus Aurantium Dulcis Oil
Parfum
Tephrosia Purpurea Seed Extract
Vitis Vinifera Seed Oil
Leuconostoc/Radish Root Ferment Filtrate
Menthol
Eugenia Caryophyllus Leaf Oil
Glyceryl Caprylate
Lactic Acid/Glycolic Acid Copolymer
Phenylpropanol
Polyvinyl Alcohol
Hydroxyproline
Proline
Alanine
Lysine
Serine
Threonine
Water, Glycerin, Vegetable Oil, Propanediol, Behenyl Alcohol, Squalane, Octyldodecanol, Butylene Glycol, Dicaprylyl Carbonate, Helianthus Annuus Seed Oil, Phenoxyethanol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Beheneth-25, Glyceryl Acrylate/Acrylic Acid Copolymer, Sodium Hydroxide, Benzoic Acid, Lavandula Angustifolia Oil, Disodium EDTA, Dunaliella Salina Extract, Rhizobian Gum, Sodium Hyaluronate, Dehydroacetic Acid, Lavandula Hybrida Oil, Pelargonium Graveolens Flower Oil, Padina Pavonica Thallus Extract, Eucalyptus Globulus Leaf Oil, Chlorphenesin, Plankton Extract, Anthemis Nobilis Flower Oil, Potassium Sorbate, Sodium Benzoate, Caramel, Mentha Arvensis Leaf Oil, Tocopherol, Xanthan Gum, Collagen Amino Acids, Caprylyl Glycol, Citrus Aurantium Dulcis Oil, Parfum, Tephrosia Purpurea Seed Extract, Vitis Vinifera Seed Oil, Leuconostoc/Radish Root Ferment Filtrate, Menthol, Eugenia Caryophyllus Leaf Oil, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Phenylpropanol, Polyvinyl Alcohol, Hydroxyproline, Proline, Alanine, Lysine, Serine, Threonine, Linalool, Geraniol, Limonene
Alternatives
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken, emulsify, and improve the texture of products.
As an emulsifier, it helps stabilize oil-in-water emulsions to give products an elegant feel when applied.
It can also form a thin protective film on skin. One study found that a formula using this polymer helped slow down how quickly other ingredients (like DEET) were absorbed through skin.
A 2024 study of over 1,300 patients confirmed that sensitization to this ingredient is rare. It is also non-mutagenic and has a clean track record.
Benzoic Acid is an organic acid that shows up in cosmetics as a preservative. It helps keep a product from spoiling by holding back the growth of yeast, mold, and some bacteria.
This ingredient also functions as a fragrance ingredient that helps mask the unpleasant scent of other ingredients.
The way it works is worth understanding; benzoic acid works when the formula is acidic. It is able to sneak into a microbe's cell and mess up how it functions to stop it from growing in an acidic product.
However, the acid switches to an inactive form and stops working if a product isn't acidic enough (above ~5 pH). This is why you'll often see it in low pH products or teamed up with other preservatives to cover the gap.
Safety wise, it's one of the better studied preservatives out there.
The Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe for use in cosmetic formulations at concentrations up to 5%.
A large international review found this ingredient had no effects on the human body and had low irritation potential.
Just so you know, real world use is usually much lower than the 5% ceiling (usually 1% of less).
The EU caps it at 2.5% in rinse-off products, 1.7% in oral care, and 0.5% in leave-on products.
One thing worth mentioning (it's nothing to worry about): some people get a little stinging or flushing where they apply it. This isn't a true allergy; it's a temporary and harmless reaction. This is the same kind of mild tingle you might notice from sorbic acid.
Dehydroacetic Acid is a synthetic preservative that keeps your products safe from microbes.
As an organic acid, it penetrates microbial cell walls and disrupts cellular metabolism. This makes it effective against bacteria, yeast, and mold.
It is effective at low concentrations (<0.6%). Clinical studies have found it to be non-irritating, non-sensitizing, and non-photosensitizing.
Dicaprylyl Carbonate comes from carbonic acid and caprylyl alcohol, a fatty alcohol. It is an emollient and gives skin a velvet feel. The sources of Dicaprylyl Carbonate may be synthetic or from animals.
As an emollient, Dicaprylyl Carbonate creates a film on the skin. This film traps moisture in, keeping your skin soft and hydrated.
Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.
This ingredient mainly works behind the scenes and helps with:
On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.
One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).
Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.
You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.
Geraniol is used to add fragrance/parfum to a product. It is the main component of citronellol. It is a monoterpenoid and an alcohol.
Monoterpenes are naturally found in many parts of different plants.
Geraniol can be found in many essential oils including Rose Oil and Citronella Oil. The scent of Geraniol is often described as "rose-like". Many foods also contain Geraniol for fruit flavoring.
Geraniol can irritate the skin when exposed to air. However, irritation depends on the ability of geraniol to penetrate into the skin. In general, geraniol is not able to penetrate skin easily.
Geraniol is colorless and has low water-solubility. However, it is soluble in common organic solvents.
Like citronellol, it is a natural insect repellent.
2,6-Octadien-1-ol, 3,7-dimethyl-, (2E)-
Glycerin (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.
Limonene is a fragrance that adds scent and taste to a formulation.
It's found in the peel oil of citrus fruits and other plants such as lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus".
Limonene acts as an antioxidant, meaning it helps neutralize free radicals.
When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin.
The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance.
Linalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.
This ingredient has a scent that is floral, spicy tropical, and citrus-like.
Pelargonium Graveolens Flower Oil is the pressed oil of the Rose Geranium plant. It is volatile, meaning it evaporates off the skin.
Fragrant components of Rose Geranium include citronellol and geraniol. These may cause allergies and skin-sensitivity. We recommend speaking with a professional if you have any concerns.
The scent of Rose Geranium closely resembles traditional roses.
Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.
On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.
Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.
Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.
Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.
Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.
In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.
Interestingly, the size of the molecule affects its behavior:
Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.
Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.
You'll typically see concentrations between 0.1-2% for this ingredient.
Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
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. Remember to stay hydrated!
Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.