Versus

Peter Thomas Roth Peptide 21 Wrinkle Resist Serum Versus Drunk Elephant Protini Polypeptide Cream - US

Serum
General Moisturizer
American Brand
American Brand

Updated on March 19, 2025

Overview

What they are

These products are both reef safe . They have a total of 14 ingredients in common

Cool Features

They both contain hyaluronic acid, peptides and Vitamin E

Suited For

They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, scar healing and dark spots

Free From

They both do not contain any harsh alcohols, common allergens or parabens

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
Peptide 21 Wrinkle Resist Serum

Water

Skin Conditioning

Glycerin

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

Rosa Centifolia Flower Water

Skin Conditioning

Isopropyl Myristate

Emollient
3-5 / 3 May worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Mannitol

Humectant
Helps hydrate Dry Skin Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Natto Gum

Tripeptide-10 Citrulline

Skin Conditioning
Peptide Icon

Acetyl Octapeptide-3

Humectant
Peptide IconHelps with Anti-Aging Icon

Palmitoyl Hexapeptide-12

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

Acetyl Tetrapeptide-11

Skin Conditioning
Peptide Icon

Acetyl Hexapeptide-8

Humectant
Peptide IconHelps hydrate Dry Skin IconHelps with Anti-Aging Icon

Acetyl Hexapeptide-1

Skin Conditioning
Peptide Icon

Palmitoyl Oligopeptide

Cleansing
Peptide IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconNot safe for Fungal Acne Icon

Acetyl Tetrapeptide-9

Skin Conditioning
Peptide Icon

Acetyl Tetrapeptide-2

Skin Conditioning
Peptide Icon

Tripeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging Icon

Palmitoyl Tetrapeptide-7

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

Hexapeptide-11

Skin Conditioning
Peptide Icon

Dipeptide Diaminobutyroyl Benzylamide Diacetate

Skin Conditioning
Peptide IconHelps with Anti-Aging Icon

Palmitoyl Tripeptide-5

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

Trifluoroacetyl Tripeptide-2

Skin Conditioning
Peptide Icon

Palmitoyl Tripeptide-1

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

Sodium Polyglutamate

Humectant

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Retinyl Palmitate

Skin Conditioning
1-3 / 1-3 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 IconNot safe for Fungal Acne IconMay worsen Rosacea 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

Hydrolyzed Soy Protein

Humectant
Helps hydrate Dry Skin Icon

Hydrolyzed Wheat Protein

Skin Conditioning

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Pseudoalteromonas Ferment Extract

Humectant
Not safe for Fungal Acne Icon

Acrylates Copolymer

Magnesium Chloride

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Dimethyl Isosorbide

Solvent

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Emulsion Stabilising

Leuconostoc/Radish Root Ferment Filtrate

Antimicrobial
Not safe for Fungal Acne Icon

PEG-8 Dimethicone

Emulsifying
Silicon Icon

Disodium Phosphate

Buffering

Carbomer

Emulsion Stabilising
1 / 0

Dextran

Helps hydrate Dry Skin Icon

Sodium Lactate

Buffering

Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate

Skin Conditioning

Xanthan Gum

Emulsifying

Triethanolamine

Buffering
2 / 0

Sodium Phosphate

Buffering

Octyldodecanol

Emollient

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

Sodium Propoxyhydroxypropyl Thiosulfate Silica

Sulfate Icon

Sodium Hydroxide

Buffering

Caprylyl Glycol

Emollient

Potassium Sorbate

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Phenoxyethanol

Preservative
Preservative Icon
Protini Polypeptide Cream

Water

Skin Conditioning

Dicaprylyl Carbonate

Emollient

Glycerin

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

Cetearyl Alcohol

Emollient
2 / 1 Fatty Alcohol IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Cetearyl Olivate

Not safe for Fungal Acne Icon

Sorbitan Olivate

Emulsifying
Not safe for Fungal Acne Icon

Sclerocarya Birrea Seed Oil

Humectant
Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Bacillus/Folic Acid Ferment Filtrate Extract

Antioxidant
Antioxidant Icon

Nymphaea Alba Root Extract

Skin Conditioning

Sh-Oligopeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Scar Healing Icon

Sh-Oligopeptide-2

Skin Conditioning
Peptide Icon

Sh-Polypeptide-1

Skin Conditioning
Peptide Icon

Sh-Polypeptide-9

Skin Conditioning
Peptide Icon

Sh-Polypeptide-11

Peptide IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Copper Palmitoyl Heptapeptide-14

Skin Conditioning
Peptide Icon

Heptapeptide-15 Palmitate

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

Palmitoyl Tripeptide-1

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

Alanine

Masking

Arginine

Masking
Good for Scar Healing IconNot safe for Fungal Acne Icon

Glycine

Buffering
Helps hydrate Dry Skin Icon

Histidine

Humectant
Helps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Isoleucine

Skin Conditioning

Phenylalanine

Masking
Helps hydrate Dry Skin IconGood for Scar Healing Icon

Proline

Skin Conditioning

Serine

Masking
Helps hydrate Dry Skin Icon

Threonine

Helps hydrate Dry Skin Icon

Valine

Masking

Acetyl Glutamine

Skin Conditioning

Coconut Alkanes

Emollient
Not safe for Fungal Acne Icon

Coco-Caprylate/Caprate

Emollient
Not safe for Fungal Acne Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Aspartic Acid

Masking
Helps hydrate Dry Skin Icon

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

Linolenic Acid

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

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Polyvinyl Alcohol

Sodium Lactate

Buffering

Sodium PCA

Humectant
0 / 0 Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon

PCA

Humectant
Helps hydrate Dry Skin Icon

Sorbitan Isostearate

Emulsifying
1-2 / 0 Not safe for Fungal Acne Icon

Carbomer

Emulsion Stabilising
1 / 0

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Polysorbate 60

Emulsifying
Not safe for Fungal Acne Icon

Lactic Acid/Glycolic Acid Copolymer

Skin Conditioning

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Emulsion Stabilising

Xanthan Gum

Emulsifying

Isomalt

Humectant

1,2-Hexanediol

Skin Conditioning
Helps hydrate Dry Skin Icon

Caprylyl Glycol

Emollient

Chlorphenesin

Antimicrobial
Preservative Icon

Phenoxyethanol

Preservative
Preservative Icon

Tocopherol

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

Sodium Benzoate

Masking
Preservative Icon

Phenylpropanol

Masking
Fragrance Icon

Glyceryl Caprylate

Emollient

Symphytum Officinale Callus Culture Extract

Skin Conditioning

Ingredients Explained

These ingredients are found in both products.

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

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
Emollient, Humectant, Skin Conditioning

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 Glycol
Emulsion Stabilising, Gel Forming

Carbomer is a polymer of acrylic acid. Its main role is to create a gel consistency.

A high amount of carbomer can cause pilling or balling up of products. Don't worry, most products contain 1% or less of carbomer.

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, Emulsifying, Skin Conditioning

Lecithin is a term for a group of substances found in the cell membranes of plants, animals, and humans. They are made up of mixture of phospholipids.

This ingredient has emollient and emulsifying properties.

As an emollient, lecithen helps soften the skin and creates a barrier to keep moisture in.

As an emulsifier, it also helps prevent water and oil ingredients from separating. Lecithin can also help ingredients be better absorbed by the skin.

This is because the phospholipids in lecithin produce liposomes. Liposomes help other ingredients get through the skin barrier.

Depending on the source of this ingredient, lecithin may not be fungal acne safe. This is because some sources of lecithin come from soybean oil, which may feed the malassezia yeast that feeds fungal acne.

We recommend reaching out to the brand you are purchasing from to inquire about the source of their lecithin.

Learn more about Lecithin
Skin Conditioning

Palmitoyl Tetrapeptide-7 is a lab-made peptide with anti-inflammatory and skin-repairing benefits. It's made up of four amino acids (glycine, glutamine, proline, and arginine) and palmitic acid (which helps it penetrate skin more effectively).

This ingredient helps reduce inflammation by limiting the production of interleukin-6 (IL-6), a chemical that triggers inflammatory responses, particularly after UV exposure.

Less inflammation = slower collagen breakdown and a longer-lasting, youthful appearance.

Palmitoyl Tetrapeptide-7 also stimulates collagen production and supports a healthier skin barrier.

Over time, this can improve skin firmness, hydration, and reduce the appearance of fine lines. It’s commonly paired with Palmitoyl Tripeptide-1 in the well-known Matrixyl 3000 complex for enhanced anti-aging effects.

This ingredient has been shown to be effective and safe in cosmetic use and you'll typically find it in small amounts (less than 0.01%).

Due to its palmitic acid base, it may not be safe for Malassezia folliculitis.

Read more about other common types of peptides here:

Learn more about Palmitoyl Tetrapeptide-7
Skin Conditioning

Palmitoyl Tripeptide-1 is also known as pal-GHK. It is made up of 3 amino acids and palmitic acid, a fatty acid that helps it absorb into skin more easily.

This peptide is as a signal peptide, meaning it tells the skin to produce more collagen. Collagen is the key protein that helps form the skin's structure and keep it plump, firm, and hydrated.

By boosting collagen production, this ingredient supports a stronger skin barrier and helps reduce the appearance of wrinkles.

You'll most likely see this ingredient paired with Palmitoyl Tetrapeptide-7 in the well-known Matrixyl 3000 complex. While results from in-house testing should be viewed cautiously, this peptide duo is among the most studied and widely used in modern skincare.

Due to its palmitic acid base, this ingredient may not be safe for Malassezia folliculitis.

Read more about other common types of peptides here:

Learn more about Palmitoyl Tripeptide-1
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.

Emulsifying

Polysorbate 20 is made by combining ethoxylation of sorbitan, ethylene oxide, and lauric acid. It is a mild cleansing agent, surfactant, and emulsifier.

As a surfactant, it helps collect dirt and oils for washing. Emulsifiers prevent oils and water from separating.

Polysorbate 20 also adds scent to a product. Since it is made using sorbitol, it has a sweet scent. Sorbitol can also be found in fruits such as apples and peaches.

The lauric acid used to create Polysorbate 20 is often derived from coconuts.

Polysorbate 20 may not be fungal acne safe.

Learn more about Polysorbate 20
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
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
Humectant, Buffering

Sodium Lactate is the sodium salt of lactic acid, an AHA. It is a humectant and sometimes used to adjust the pH of a product.

This ingredient is part of our skin's NMF, or natural moisturizing factor. Our NMF is essential for the hydration of our top skin layers and plasticity of skin. NMF also influences our skin's natural acid mantle and pH, which protects our skin from harmful bacteria.

High percentages of Sodium Lactate can have an exfoliating effect.

Fun fact: Sodium Lactate is produced from fermented sugar.

Learn more about Sodium Lactate
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
Emulsifying, Emulsion Stabilising, Gel Forming

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.

Learn more about Xanthan Gum

When to use

19 Routines
53% use in am
47% use in pm
89% use every day
618 Routines
52% use in am
48% use in pm
94% use every day
When to use See routines that use it ->

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Expensive 67% Hydrating 50% Absorbs Well 33%