Here's our complete breakdown comparing the ingredients, attributes, and more of Peter Thomas Roth Peptide 21 Wrinkle Resist Serum versus Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment .
Published on March 01, 2023
Overview
Cool Features
They both contain exfoliants and Vitamin E
Suited For
They're both likely to be good for fighting acne, 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 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 need an update? Let us know.
Serum
Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.
Facial Treatment
Facial treatments are specially designed to treat a skin concern. Acne treatments and anti-aging products are common examples of facial treatments.
Price
Ingredient Info
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment 46 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Contains Silicon
Ingredients in this product that are types of silicon:
Fragrance Free
This product is free of fragrances 🎉
Contains Sulfate
Ingredients in this product that are types of sulfate:
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
Contains Alcohol
Ingredients in this product that are types of alcohol:
Contains Silicon
Ingredients in this product that are types of silicon:
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Not Reef Safe
Ingredients in this product that are not reef safe:
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment 46 ingredients
Notable Ingredients
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This product contains 16 ingredients that may have this attribute:
- 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
Benefits
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Concerns
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Notable Ingredients
This product contains 1 ingredient that may have this attribute:
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This product contains 1 ingredient that may have this attribute:
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Benefits
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Concerns
This product contains 2 ingredients that may have this attribute:
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Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment 46 ingredients
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
Water • Niacinamide • Isononyl Isononanoate • Dimethyl Isosorbide • Tranexamic Acid • Dimethicone • Propanediol • Pentylene Glycol • Caprylic Acid • Alpha-Arbutin • Glyceryl Stearate • C9-12 Alkane • Cetyl Alcohol • Butyrospermum Parkii Butter • Citric Acid • Kojic Acid • Morus Alba Root Extract • Resveratrol • Scutellaria Lateriflora Extract • Hydrangea Arborescens Root Extract • Squalane • Hydrolyzed Vegetable Protein • Phenoxyethanol • Peg-100 Stearate • Tocopheryl Acetate • Polyacrylate Crosspolymer-6 • Peg-75 Stearate • Ceteareth-20 • Steareth-20 • Silica • Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer • Dimethiconol • Coco-Caprylate/Caprate • Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer • Titanium Dioxide • Sodium Phytate • Diethylhexyl Syringylidenemalonate • Potassium Sorbate • Sodium Benzoate • Polysorbate 60 • Polysorbate 20 • T-Butyl Alcohol • Caprylic/Capric Triglyceride • Caprylyl Glycol • Hexylene Glycol • Sorbitan Isostearate
Ingredients Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterPeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 1.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 1.
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 SqualanePeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 5.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 21.
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 AcetatePeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 27.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 25.
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 20Peter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 36.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 41.
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 IsosorbidePeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 37.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 4.
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 SilicaPeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 50.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 30.
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 GlycolPeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 53.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 44.
Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
Potassium sorbate is potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
Potassium sorbate is often used with stronger preservatives.
Learn more about Potassium SorbatePeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 54.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 38.
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.
Sodium Benzoate 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 BenzoatePeter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 55.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 39.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and 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.
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum contains this as ingredient number 56.
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment contains this as ingredient number 23.
Here's what our community thinks of the ingredients in these two products.
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment 46 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Peter Thomas Roth Peptide 21 Wrinkle Resist Serum 56 ingredients
Peter Thomas Roth PRO Strength Niacinamide Discoloration Treatment 46 ingredients
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