Versus

Peter Thomas Roth Un-Wrinkle Turbo Serum Versus Medik8 Liquid Peptides

Serum
Serum
American Brand
British Brand

Updated on June 26, 2024

Overview

What they are

These products are both serums. They have a total of 17 ingredients in common

Cool Features

They both contain hyaluronic acid and peptides

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 common allergens, oils, silicones or sulfates

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
Un-Wrinkle Turbo 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

Propanediol

Solvent
Helps hydrate Dry Skin Icon

Alcohol Denat.

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

Squalene

Emollient
Helps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Tetrapeptide-17

Skin Conditioning
Peptide Icon

Palmitoyl Dipeptide-10

Skin Conditioning
Peptide Icon

Palmitoyl Tetrapeptide-7

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

Palmitoyl Hexapeptide-19

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

Palmitoyl Oligopeptide

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

Tripeptide-10 Citrulline

Skin Conditioning
Peptide Icon

Tripeptide-1

Skin Conditioning
Peptide IconHelps with Anti-Aging Icon

Caprooyl Tetrapeptide-3

Skin Protecting
Peptide Icon

Acetyl Octapeptide-3

Humectant
Peptide IconHelps with Anti-Aging Icon

Acetyl Hexapeptide-30

Skin Conditioning
Peptide Icon

Acetyl Hexapeptide-8

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

Pentapeptide-18

Skin Conditioning
Peptide IconHelps with Anti-Aging IconGood for Dark Spots Icon

Palmitoyl Tripeptide-5

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

Palmitoyl Tripeptide-38

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

Dipeptide Diaminobutyroyl Benzylamide Diacetate

Skin Conditioning
Peptide IconHelps with Anti-Aging Icon

Acetyl Hexapeptide-24

Skin Conditioning
Peptide Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid IconHelps hydrate Dry Skin Icon

Arginine

Masking
Good for Scar Healing IconNot safe for Fungal Acne 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

Ascorbyl Palmitate

Antioxidant
2 / 0 Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin IconNot safe for Fungal Acne Icon

Pseudoalteromonas Ferment Extract

Humectant
Not safe for Fungal Acne Icon

Hydrolyzed Wheat Protein

Skin Conditioning

Hydrolyzed Soy Protein

Humectant
Helps hydrate Dry Skin Icon

Acetylarginyltryptophyl Diphenylglycine

Skin Conditioning

Hydroxypropyl Cyclodextrin

Masking

Isopropyl Myristate

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

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Gluconolactone

Skin Conditioning
PHA IconGood for Skin Texture IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin Icon

Xanthan Gum

Emulsifying

Lecithin

Emollient
Helps hydrate Dry Skin Icon

Carbomer

Emulsion Stabilising
1 / 0

Dextran

Helps hydrate Dry Skin Icon

Triethanolamine

Buffering
2 / 0

Potassium Sorbate

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Caprylyl Glycol

Emollient

Propylene Glycol

Humectant
0 / 0 Helps hydrate Dry Skin IconMay worsen Eczema IconMay worsen Rosacea Icon

Diazolidinyl Urea

Preservative
Preservative IconMay cause irritation Icon

Methylparaben

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

Propylparaben

Preservative
0 / 0 Preservative IconParaben IconCan worsen Dry Skin IconNon-Reef-Safe Icon

Isobutylparaben

Antimicrobial
Paraben IconCan worsen Dry Skin Icon

Ethylparaben

Preservative
Preservative IconParaben IconNon-Reef-Safe Icon

Butylparaben

Masking
Preservative IconParaben IconCan worsen Dry Skin IconNon-Reef-Safe IconMay worsen Eczema Icon

Phenoxyethanol

Preservative
Preservative Icon

CI 17200

Cosmetic Colorant
1 / 2
Liquid Peptides

Ingredients Explained

These ingredients are found in both products.

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

Humectant, Skin Conditioning

Acetyl Hexapeptide-8, commonly known as Argireline, is a popular peptide in skincare. It’s often referred to as a “Botox-like” ingredient because it helps reduce muscle movement.

By relaxing these micro-movements, Argireline may help minimize the appearance of fine lines and wrinkles. That said, it’s not as powerful as Botox, and research on its long-term effectiveness is still limited.

Beyond smoothing, Argireline may also support collagen production. Collagen is the protein that helps keep your skin firm, bouncy, and well-hydrated by strengthening the skin barrier.

So while Argireline isn’t a miracle fix, it can be a helpful addition to a routine focused on both prevention and skin health.

Read more about other common types of peptides here:

Learn more about Acetyl Hexapeptide-8
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
Masking, Skin Conditioning

We don't have a description for Hydroxypropyl Cyclodextrin yet.

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

This synthetic, signal peptide has unique skin conditioning properties in that is a matrikine-mimetic compound.

First of all, Palmitoyl Tripeptide-38 is a signal peptide; signal peptides tell the body to create more collagen.

What is a matrikine-mimetic compound?

This peptide has the ability to mimic matrikines in skin. Our skin created matrikines by breaking down matrix proteins into peptides.

Matrikines play a role in:

Though further research is needed, this ingredient seems pretty promising. In one study, women over the age of 40 with visible photoaging used a vitamin C serum with this ingredient for 56 days (15% ascorbid acid, 5 ppm palmitoyl tripeptide‐38). The results found improvement in skin roughness and skin tone.

Learn more about Palmitoyl Tripeptide-38
Skin Conditioning

This synthetic peptide is created from lysine, valine, and palmitic acid.

According to the manufacturer, in-vitro studies show tissue growth and collagen synthesis. Another in-vivo study found 60 volunteers saw a significant reduction in wrinkles after 84 days.

Due to its palmitic acid base, this peptide may not be fungal-acne safe.

Learn more about Palmitoyl Tripeptide-5
Skin Conditioning

This peptide is more commonly known as Leuphasyl. It has similar properties to argireline, the "botox peptide".

According to a manufacturer, Pentapeptide-18 mimics botulinum to freeze muscles and reduce the appearance of wrinkles. Their study found this 5% of this ingredient reduced wrinkles by 11%.

Combining this ingredient with Argireline showed improved results.

Learn more about Pentapeptide-18
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
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
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
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

3 Routines
33% use in am
67% use in pm
100% use every day
211 Routines
41% use in am
60% use in pm
92% use every day
When to use See routines that use it ->

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Medik8 Liquid Peptides 33 ingredients

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Works Well 67% Absorbs Well 33% Expensive 33%