Paula's Choice Pro-Collagen Multi-Peptide Booster Versus Peter Thomas Roth Peptide 21 Wrinkle Resist Serum
Updated on February 06, 2025
Overview
What they are
These products are both reef safe serums. They have a total of 9 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 and brightening skin
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
Paula's Choice Pro-Collagen Multi-Peptide Booster 30 ingredients
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Paula's Choice Pro-Collagen Multi-Peptide Booster 30 ingredients
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Pentylene Glycol
Skin ConditioningHydrolyzed Yeast Extract
Skin ConditioningPyrus Malus Fruit Extract
Skin ConditioningDimethicone
Emollient
Propanediol
SolventCeramide AP
Skin Conditioning
1,2-Hexanediol
Skin ConditioningGlyceryl Glucoside
HumectantPalmitoyl Tetrapeptide-72 Amide
Skin Conditioning
Sh-Polypeptide-121
Skin Conditioning
Tridecapeptide-1
Skin Conditioning
Polyglucuronic Acid
Skin ConditioningSodium Hyaluronate
Humectant
C9-12 Alkane
SolventAmmonium Polyacryloyldimethyl Taurate
Emulsion StabilisingPolygonum Bistorta Root Extract
Skin ConditioningBacillus Ferment
Skin Conditioning
Lecithin
EmollientSodium Phytate
Coco-Caprylate/Caprate
Emollient
Hexylene Glycol
EmulsifyingCetyl Hydroxyethylcellulose
Emulsion StabilisingXanthan Gum
EmulsifyingEthylhexylglycerin
Skin ConditioningCaprylyl Glycol
EmollientMagnesium Chloride
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Water, Glycerin, Pentylene Glycol, Hydrolyzed Yeast Extract, Pyrus Malus Fruit Extract, Dimethicone, Propanediol, Ceramide AP, 1,2-Hexanediol, Glyceryl Glucoside, Palmitoyl Tetrapeptide-72 Amide, Sh-Polypeptide-121, Tridecapeptide-1, Polyglucuronic Acid, Sodium Hyaluronate, C9-12 Alkane, Ammonium Polyacryloyldimethyl Taurate, Polygonum Bistorta Root Extract, Bacillus Ferment, Lecithin, Sodium Phytate, Coco-Caprylate/Caprate, Hexylene Glycol, Cetyl Hydroxyethylcellulose, Xanthan Gum, Ethylhexylglycerin, Caprylyl Glycol, Magnesium Chloride, Potassium Sorbate, Sodium Benzoate
Water
Skin ConditioningGlycerin
Humectant
Rosa Centifolia Flower Water
Skin ConditioningIsopropyl Myristate
Emollient
Squalane
Emollient
Mannitol
HumectantButylene Glycol
Humectant
Natto Gum
Tripeptide-10 Citrulline
Skin Conditioning
Acetyl Octapeptide-3
Humectant
Palmitoyl Hexapeptide-12
Skin Conditioning
Acetyl Tetrapeptide-11
Skin Conditioning
Acetyl Hexapeptide-8
Humectant
Acetyl Hexapeptide-1
Skin Conditioning
Palmitoyl Oligopeptide
Cleansing
Acetyl Tetrapeptide-9
Skin Conditioning
Acetyl Tetrapeptide-2
Skin Conditioning
Tripeptide-1
Skin Conditioning
Palmitoyl Tetrapeptide-7
Skin Conditioning
Hexapeptide-11
Skin Conditioning
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Palmitoyl Tripeptide-5
Skin Conditioning
Trifluoroacetyl Tripeptide-2
Skin Conditioning
Palmitoyl Tripeptide-1
Skin Conditioning
Sodium Polyglutamate
HumectantSodium Hyaluronate
Humectant
Tocopheryl Acetate
Antioxidant
Retinyl Palmitate
Skin Conditioning
Ascorbic Acid
Antioxidant
Hydrolyzed Soy Protein
HumectantHydrolyzed Wheat Protein
Skin ConditioningLecithin
EmollientPseudoalteromonas Ferment Extract
Humectant
Acrylates Copolymer
Magnesium Chloride
Polysorbate 20
Emulsifying
Dimethyl Isosorbide
SolventAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingLeuconostoc/Radish Root Ferment Filtrate
Antimicrobial
PEG-8 Dimethicone
Emulsifying
Disodium Phosphate
BufferingCarbomer
Emulsion StabilisingDextran
Sodium Lactate
BufferingTetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate
Skin ConditioningXanthan Gum
EmulsifyingTriethanolamine
BufferingSodium Phosphate
BufferingOctyldodecanol
EmollientSilica
Abrasive
Sodium Propoxyhydroxypropyl Thiosulfate Silica
Sodium Hydroxide
BufferingCaprylyl Glycol
EmollientPotassium Sorbate
Preservative
Sodium Benzoate
Masking
Phenoxyethanol
Preservative
Water, Glycerin, Rosa Centifolia Flower Water, Isopropyl Myristate, Squalane, Mannitol, Butylene Glycol, Natto Gum, Tripeptide-10 Citrulline, Acetyl Octapeptide-3, Palmitoyl Hexapeptide-12, Acetyl Tetrapeptide-11, Acetyl Hexapeptide-8, Acetyl Hexapeptide-1, Palmitoyl Oligopeptide, Acetyl Tetrapeptide-9, Acetyl Tetrapeptide-2, Tripeptide-1, Palmitoyl Tetrapeptide-7, Hexapeptide-11, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Palmitoyl Tripeptide-5, Trifluoroacetyl Tripeptide-2, Palmitoyl Tripeptide-1, Sodium Polyglutamate, Sodium Hyaluronate, Tocopheryl Acetate, Retinyl Palmitate, Ascorbic Acid, Hydrolyzed Soy Protein, Hydrolyzed Wheat Protein, Lecithin, Pseudoalteromonas Ferment Extract, Acrylates Copolymer, Magnesium Chloride, Polysorbate 20, Dimethyl Isosorbide, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Leuconostoc/Radish Root Ferment Filtrate, PEG-8 Dimethicone, Disodium Phosphate, Carbomer, Dextran, Sodium Lactate, Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate, Xanthan Gum, Triethanolamine, Sodium Phosphate, Octyldodecanol, Silica, Sodium Propoxyhydroxypropyl Thiosulfate Silica, Sodium Hydroxide, Caprylyl Glycol, Potassium Sorbate, Sodium Benzoate, Phenoxyethanol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterGlycerin 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 GlycerinSodium 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 HyaluronateLecithin 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 LecithinXanthan 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 GumCaprylyl 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 GlycolWe don't have a description for Magnesium Chloride yet.
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 SorbateSodium 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 BenzoateIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Paula's Choice Pro-Collagen Multi-Peptide Booster 30 ingredients
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Reviews
Here's what our community thinks
