Versus

Peter Thomas Roth Peptide 21 Wrinkle Resist Serum Versus Clinique Smart Clinical Repair Wrinkle Correcting Serum

Serum
Serum
American Brand United States
American Brand United States

Updated on February 06, 2025

Overview

What they are

These products are both reef safe serums. They have a total of 18 ingredients in common

Cool Features

They both contain exfoliants, hyaluronic acid, peptides, retinoid, Vitamin C and Vitamin E

Suited For

They're both likely to be good for fighting acne, 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 harsh alcohols, common allergens, fragrances, oils or parabens

What's Inside

They both contain 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
Peptide 21 Wrinkle Resist Serum

Water

Skin Conditioning

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin 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

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Natto Gum

Tripeptide-10 Citrulline

Skin Conditioning
Peptide Icon

Acetyl Octapeptide-3

Humectant
Peptide 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 with Anti-Aging Icon

Acetyl Hexapeptide-1

Skin Conditioning
Peptide Icon

Palmitoyl Oligopeptide

Cleansing
Peptide 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 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 IconNot safe for Fungal Acne Icon

Sodium Polyglutamate

Humectant

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid 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

Hydrolyzed Wheat Protein

Skin Conditioning

Lecithin

Emollient

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

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
Smart Clinical Repair Wrinkle Correcting Serum

Water

Skin Conditioning

Dimethicone

Emollient
1 / 0 Silicon Icon

Isododecane

Emollient

Butylene Glycol

Humectant
1 / 0 Helps hydrate Dry Skin Icon

Glycerin

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

Polysilicone-11

Ascorbyl Glucoside

Antioxidant
Vitamin C IconAntioxidant IconHelps reduce Skin Redness IconGood for Skin Texture IconGood for Minimizing Pores IconHelps brighten skin Icon

Sodium Hyaluronate

Humectant
0 / 0 Hyaluronic Acid Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Hypnea Musciformis Extract

Skin Protecting

Gelidiella Acerosa Extract

Skin Protecting

Sigesbeckia Orientalis Extract

Skin Conditioning

Helianthus Annuus Seed Extract

Skin Conditioning

Hordeum Vulgare Extract

Emollient

Triticum Vulgare Germ Extract

Skin Conditioning

Cucumis Sativus Fruit Extract

Emollient

Caffeine

Skin Conditioning

Acetyl Hexapeptide-8

Humectant
Peptide IconHelps with Anti-Aging Icon

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

Palmitoyl Hexapeptide-12

Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon

PEG-10 Dimethicone

Skin Conditioning
Silicon Icon

Glycyrrhetinic Acid

Skin Conditioning

Lactis Proteinum

Skin Conditioning

Isohexadecane

Emollient

Propylene Glycol Dicaprate

Emollient

Caprylyl Glycol

Emollient

Hydroxypinacolone Retinoate

Skin Conditioning
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 Icon

Acetyl Glucosamine

Skin Conditioning

Cholesterol

Emollient
0 / 0 Helps hydrate Dry Skin Icon

PEG-8

Humectant

Yeast Extract

Skin Conditioning
Not safe for Fungal Acne Icon

PEG-6

Humectant

Dimethyl Isosorbide

Solvent

Glyceryl Polymethacrylate

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Sodium Phosphate

Buffering

Synthetic Fluorphlogopite

Polysorbate 80

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

Carbomer

Emulsion Stabilising
1 / 0

Hexylene Glycol

Emulsifying
0-2 / 0-1

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Acrylamide/Sodium Acryloyldimethyltaurate Copolymer

Emulsion Stabilising

Potassium Hydroxide

Buffering

Tin Oxide

Abrasive
Exfoliant Icon

Disodium Phosphate

Buffering

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

Disodium EDTA

Sodium Citrate

Buffering

Phenoxyethanol

Preservative
Preservative Icon

Potassium Sorbate

Preservative
Preservative Icon

CI 77891

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

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
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.

Skin Conditioning

Palmitoyl Hexapeptide-12 is a synthetic peptide made with glycine, histidine, lysine, and palmitic acid.

The sequence of this peptide matches that of elastin, a key protein that plays a role in how firm our skin is.

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

Learn more about Palmitoyl Hexapeptide-12
Humectant, Skin Conditioning

Acetyl Hexapeptide-8 is a peptide. A common name for this peptide is Argireline.

Argireline has a similar function to botox; it prevents muscle movement and contractions slightly. By preventing muscles from moving, argireline also prohibits the formation of fine lines and wrinkles. However, research is lacking in proving this ingredient to be as effective as botox.

On the other hand, argireline tells our body to create more collagen. Collagen is a protein that makes connective tissue. Boosting collagen production leads to a healthier skin barrier. Having a healthy skin barrier means having firm and hydrated skin.

Read more about other common types of peptides here:

Learn more about Acetyl Hexapeptide-8
Skin Conditioning

Palmitoyl Tetrapeptide-7 is a peptide. Peptides are building blocks for protein.

This ingredient consists of four amino acids and palmitic acid. These amino acids are arginine, proline, glutamine, and glycine.

This ingredient has many benefits. These benefits include boosting collagen production, fighting inflammation, and reversing UV damage.

By preventing our bodies from producing interleukins, Palmitoyl Tetrapeptide-7 helps fight inflammation. An interleukin is a chemical that signals to the body to produce an inflammatory response. Interleukin production is accelerated by UV radiation.

Palmitoyl Tetrapeptide-7 tells our body to create more collagen. Collagen is a protein that makes connective tissue. Boosting collagen production leads to a healthier skin barrier. Having a healthy skin barrier means having firm and hydrated skin.

Read more about other common types of peptides here:

Learn more about Palmitoyl Tetrapeptide-7
Skin Conditioning

Palmitoyl Tripeptide-1 is a 3-amino acid peptide. Peptides are building blocks for protein.

This ingredient is a signal peptide, meaning it tells our skin to create collagen. Collagen is a protein that makes connective tissue. Boosting collagen production leads to a healthier skin barrier. Having a healthy skin barrier means having firm and hydrated skin.

Palmitoyl Tripeptide-1 can help reduce wrinkles and make the skin look more youthful.

Read more about other common types of peptides here:

Learn more about Palmitoyl Tripeptide-1
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
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
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

Dimethyl Isosorbide is a solvent and helps deliver actives into your skin. It is created from sorbitol.

As a solvent, dimethyl isosorbide helps dissolve other ingredients. This helps ensure even distribution of an ingredient. It may also be used to decrease the thickness of a product.

Studies show dimethyl isosorbide is able to penetrate skin to deliver other ingredients into the skin, making them more effective.

Learn more about Dimethyl Isosorbide
Buffering, Masking

Disodium Phosphate is a water-soluble powder used as a pH adjuster.

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.

Buffering

We don't have a description for Sodium Phosphate yet.

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
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
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.

When to use

18 Routines
56% use in am
44% use in pm
89% use every day
49 Routines
37% use in am
63% use in pm
84% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients

Peptide 21 Wrinkle Resist Serum hasn't been rated yet.
Rate it now

Clinique Smart Clinical Repair Wrinkle Correcting Serum 53 ingredients

4.0 /5
from 1 rating
Absorbs Well (1) Expensive (1) Light (1)
carriedulan's avatar

Carrie Dulan

5 months ago
Review

I still try tretinion every now and again. I've never made it past 3 days a week before the flakes set in. So I use other serums like this one from Clinique. I really love this because I don't have to be as concserned with getting it in my hairline, in the small folds on the each side of my nostrils. I can put it on day (I always use sunscreen) and night and it does knock the edges off any Show more

#expensive
#light
#absorbs well
#no scent