Versus

Guerlain The Radiance Concentrate Youth Replenisher - Brightening Versus La Prairie Platinum Rare Cellular Night Elixir

Serum
Serum
French Brand France
Swiss Brand Switzerland

Updated on February 12, 2025

Overview

What they are

These products are both serums. They have a total of 23 ingredients in common

Cool Features

They both contain AHA, exfoliants, hyaluronic acid, peptides and Vitamin E

Suited For

They're both likely to be good for 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 oils or sulfates

What's Inside

They both contain harsh alcohols, common allergens, fragrances 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

About this product

About this product

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
The Radiance Concentrate Youth Replenisher - Brightening

Water

Skin Conditioning

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Dimethicone

Emollient
1 / 0 Silicon Icon

Alcohol

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

Caprylic/Capric Triglyceride

Masking

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Polyglycerin-3

Humectant

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

C14-22 Alcohols

Emulsion Stabilising

Gastrodia Elata Root Extract

Skin Conditioning

Phalaenopsis Amabilis Extract

Humectant

Dendrobium Nobile Extract

Skin Conditioning

Lactic Acid

Buffering
AHA 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 brighten skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Steareth-21

Cleansing

Synthetic Fluorphlogopite

Phenoxyethanol

Preservative
Preservative Icon

Decyloxazolidinone

Antimicrobial

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Polymethylsilsesquioxane

Silicon Icon

Coco-Glucoside

Cleansing

Sodium Citrate

Buffering

Sodium Hydroxide

Buffering

C12-20 Alkyl Glucoside

Emulsifying

Coconut Alcohol

Emollient

Pentylene Glycol

Skin Conditioning

Sodium Stearoyl Glutamate

Cleansing

CI 77891

Cosmetic Colorant

Behenyl Alcohol

Emollient
Fatty Alcohol Icon

Batyl Alcohol

Emollient

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Xanthan Gum

Emulsifying

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Cetyl Palmitate

Emollient
0 / 0 Not safe for Fungal Acne Icon

Menthoxypropanediol

Masking
May cause irritation Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Lecithin

Emollient

Stearyl Glycyrrhetinate

Skin Conditioning

Polysorbate 80

Emulsifying
0 / 0 May worsen Oily Skin IconNot safe for Fungal Acne Icon

Sorbitan Stearate

Emulsifying
0 / 1 Not safe for Fungal Acne 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

Malva Sylvestris Extract

Astringent

Adenosine

Skin Conditioning
Good for Minimizing Pores IconGood for Scar Healing Icon

Linalool

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

Helianthus Annuus Seed Extract

Skin Conditioning

Alpha-Isomethyl Ionone

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Geraniol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Sodium Metabisulfite

Antioxidant
Antioxidant IconPreservative Icon

Sodium Benzoate

Masking
Preservative Icon

Tin Oxide

Abrasive
Exfoliant Icon

Potassium Sorbate

Preservative
Preservative Icon

Tropaeolum Majus Extract

Antimicrobial

Citronellol

Perfuming
Fragrance IconMay cause irritation IconEU Allergen Icon

Hydrogenated Lecithin

Emulsifying

Limonene

Perfuming
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Ethylhexylglycerin

Skin Conditioning

Diamond Powder

Abrasive
Exfoliant Icon

Tocopherol

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

Glucose

Humectant

BHT

Antioxidant
Antioxidant Icon

Palmitoyl Tetrapeptide-10

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

Hexapeptide-2

Bleaching
Peptide Icon
Platinum Rare Cellular Night Elixir

Water

Skin Conditioning

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Sd Alcohol 40-B

Astringent
Alcohol IconCan worsen Dry Skin Icon

Caprylic/Capric Triglyceride

Masking

Ethylhexyl Palmitate

Emollient
2-3 / 0 May worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Ascorbyl Tetraisopalmitate

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconNot safe for Fungal Acne Icon

Synthetic Fluorphlogopite

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Dimethicone

Emollient
1 / 0 Silicon Icon

Glycoproteins

Skin Conditioning
Helps hydrate Dry Skin Icon

Platinum

Antimicrobial
Antioxidant Icon

Panax Ginseng Root Extract

Emollient
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Equisetum Arvense Extract

Astringent

Palmitoyl Tripeptide-1

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

Palmitoyl Tetrapeptide-7

Skin Conditioning
Peptide IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Calendula Officinalis Flower Extract

Masking
Fragrance IconHelps reduce Skin Redness IconHelps reduce irritation Icon

Sodium Hydroxide

Buffering

Nicotiana Sylvestris Leaf Cell Culture

Skin Conditioning

Disodium EDTA

Polyglyceryl-6 Polyricinoleate

Emulsifying
Not safe for Fungal Acne Icon

Yeast Extract

Skin Conditioning
Not safe for Fungal Acne Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Tocopherol

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

Rna

Skin Conditioning

Magnesium Carboxymethyl Beta-Glucan

Skin Conditioning

Soy Amino Acids

Skin Conditioning

Polyacrylamide

Polyglyceryl-10 Laurate

Skin Conditioning
Not safe for Fungal Acne Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Polyacrylate Crosspolymer-6

Emulsion Stabilising

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

Coco-Glucoside

Cleansing

Biosaccharide Gum-1

Skin Conditioning

Bisabolol

Masking
Helps reduce irritation Icon

C13-14 Isoparaffin

Emollient
May worsen Oily Skin IconNot safe for Fungal Acne Icon

Carbomer

Emulsion Stabilising
1 / 0

Sodium Lactate

Buffering

Laureth-7

Emulsifying

Tin Oxide

Abrasive
Exfoliant Icon

Charcoal Powder

Abrasive
Exfoliant Icon

Glycolic Acid

Buffering
AHA 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 brighten skin IconMay worsen Rosacea Icon

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Alcohol

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

Acetyl Tetrapeptide-17

Skin Conditioning
Peptide Icon

Lactobacillus Ferment

Skin Conditioning

Saccharomyces Cerevisiae Extract

Skin Conditioning

Ethylhexylglycerin

Skin Conditioning

Parfum

Masking
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon

Benzyl Alcohol

Perfuming
Alcohol IconFragrance IconPreservative IconCan worsen Dry Skin IconMay worsen Oily Skin 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

Potassium Sorbate

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Sodium Dehydroacetate

Preservative
Preservative Icon

Phenoxyethanol

Preservative
Preservative Icon

Methylparaben

Preservative
0 / 0 Preservative IconParaben IconNon-Reef-Safe IconMay worsen Eczema Icon

CI 77891

Cosmetic Colorant

CI 60730

Cosmetic Colorant

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, 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
Humectant, Skin Conditioning, Skin Protecting

Glycerin 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 Glycerin
Emollient, Skin Conditioning, Skin Protecting

Dimethicone is a type of synthetic silicone created from natural materials such as quartz.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.

Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.

Learn more about Dimethicone
Antimicrobial, Astringent, Masking

Alcohol comes in many different forms. Different types of alcohol will have different effects on skin. This ingredient is usually an astringent alcohol.

These alcohols are drying on the skin. They may strip away your skin's natural oils and even damage your skin barrier. Astringent alcohols may also irritate skin.

Other types of astringent alcohols include:

According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.

Any type of sanitizing product will have high amounts of alcohol to help kill bacteria and viruses.

Fatty alcohols come from plant oils such as coconut oil. These can help hydrate the skin and are non-irritating. Some fatty alcohols include cetyl and stearyl alcohol.

Learn more about Alcohol
Masking, Skin Conditioning

This ingredient is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.

It helps thicken a product's formula and makes it easier to spread by dissolving clumping compounds.

Caprylic Triglyceride is made by combining glycerin with coconut oil, forming a clear liquid.

While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this.

Learn more about Caprylic/Capric Triglyceride
Humectant, Masking, Skin Conditioning

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.
  • It has mild preservative properties.

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Emollient, Skin Conditioning

Squalane is an emollient that helps the skin hold onto moisture. It's an oily liquid that occurs naturally in certain types of fish and plant oils.

Because squalane boosts hydration in the skin, it also comes with plenty of benefits: it is an antioxidant and can help fight free radicals and skin damage. Squalane is also found to have a detoxifying effect when applied.

Squalane comes from squalene, which occurs naturally within the sebum of our skin. It is one of the oils our skin produces to keep itself hydrated. Squalane is the hydrogenated version of squalene and has a longer shelf life.

Research shows that squalane is non-irritating (even at 100% concentration).

In general, it's a fantastic ingredient. It does a great job at hydrating the skin, and it's suitable for those with sensitive skin.

The source of squalane may impact malassezia / fungal acne. This is because olive oil derived squalane can contain impurities such as fatty acids and plant waxes. Sugarcane derived squalane is recommended for anyone with malassezia concerns.

Is squalane vegan?

This depends on the source. Squalane can be derived from both plants and animals. Most squalane used in skincare comes from plants.

Please note: the source of squalane is only known if disclosed by the brand. We recommend reaching out to the brand if you have any questions about their squalane.

Read more about squalene with an "e".

Learn more about Squalane
Abrasive, Absorbent

Silica is a mineral naturally found in our skin. It helps to thicken and smooth the texture of a product. It also acts as an agent for other ingredients by increasing the absorption of other ingredients into the skin.

Silica is often used for absorption and can help reduce shine when products are applied. Silica occurs in naturally in materials like clay and sandstone, and it can also be produced synthetically.

Silica is present naturally within the skin during collagen production and when reducing inflammation.

Learn more about Silica

Synthetic Fluorphlogopite is the synthethic version of mica. It consists of fluorine, aluminum and silicate.

Synthetic Fluorphlogopite is used to add volume to products.

It is considered non-irritating on the skin.

Learn more about Synthetic Fluorphlogopite
Preservative

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.

Masking, Perfuming

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or '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 by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum
Cleansing, Foaming

Coco-Glucoside is a surfactant, or a cleansing ingredient. It is made from glucose and coconut oil.

Surfactants help gather dirt, oil, and other pollutants from your skin to be rinsed away.

This ingredient is considered gentle and non-comedogenic. However, it may still be irritating for some.

Learn more about Coco-Glucoside
Buffering

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.

Learn more about Sodium Hydroxide
Cosmetic Colorant

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

It's main function is to add a white color to cosmetics. It can also be mixed with other colors to create different shades.

Ci 77891 is commonly found in sunscreens due to its ability to block UV rays.

Learn more about CI 77891
Antioxidant, Skin Conditioning

Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.

One study found using Tocopheryl Acetate with Vitamin C decreased the number of sunburned cells.

Tocopheryl Acetate is commonly found in both skincare and dietary supplements.

Learn more about Tocopheryl Acetate

Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken and improve the texture of products. Due to its properties, it can prevent water and oil ingredients from separating.

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
Perfuming

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.

Learn more about Linalool
Masking, Preservative

Sodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.

It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.

Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.

We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.

Learn more about Sodium Benzoate
Abrasive

Tin Oxide is an inorganic oxide used to add opacity and volume to a product. In nature, it is already found in mineral form. The main ore of tin is an opaque and shiny mineral called casseterite.

Tin Oxide helps remove translucency in a product, or make it more opaque. Besides adding opacity, tin oxide is used for bulking to add volume.

Preservative

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

You'll often find this ingredient used with other preservatives.

Learn more about Potassium Sorbate
Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

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

When to use

1 Routine
0% use in am
100% use in pm
100% use every day