Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment Versus Sunday Riley B3 Nice 10% Niacinamide Serum
Updated on May 24, 2024
Overview
Cool Features
They both contain niacinamide and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, parabens or sulfates
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
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Sunday Riley B3 Nice 10% Niacinamide Serum 49 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
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Sunday Riley B3 Nice 10% Niacinamide Serum 49 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningNiacinamide
Smoothing
Dimethyl Isosorbide
SolventIsononyl Isononanoate
EmollientTranexamic Acid
Astringent
Dimethicone
Emollient
Caprylic/Capric Triglyceride
Masking
Alpha-Arbutin
Antioxidant
Cetyl Alcohol
Emollient
Glyceryl Stearate
Emollient
Pentylene Glycol
Skin ConditioningPropanediol
Solvent
C9-12 Alkane
SolventCitric Acid
Buffering
Glyceryl Stearate Se
Emulsifying
Butyrospermum Parkii Butter
Skin Conditioning
Tetrahexyldecyl Ascorbate
Antioxidant
Kojic Acid
Antioxidant
Resveratrol
Antioxidant
Tocopheryl Acetate
Antioxidant
Diethylhexyl Syringylidenemalonate
Skin ProtectingHydrangea Arborescens Root Extract
Skin ConditioningMorus Alba Root Extract
BleachingScutellaria Lateriflora Extract
Skin ConditioningHydrolyzed Vegetable Protein
Skin ConditioningSilica
Abrasive
Sodium Stearoyl Glutamate
CleansingCoco-Caprylate/Caprate
Emollient
Dimethiconol
Emollient
Glycerin
Humectant
Sodium Phytate
Potassium Sorbate
Preservative
Sodium Benzoate
Masking
Caprylyl Glycol
EmollientHexylene Glycol
EmulsifyingPolysorbate 20
Emulsifying
Ceteth-20
CleansingSteareth-20
CleansingPolyacrylate Crosspolymer-6
Emulsion StabilisingPEG-75 Stearate
Titanium Dioxide
Cosmetic Colorant
Phenoxyethanol
Preservative
Water, Niacinamide, Dimethyl Isosorbide, Isononyl Isononanoate, Tranexamic Acid, Dimethicone, Caprylic/Capric Triglyceride, Alpha-Arbutin, Cetyl Alcohol, Glyceryl Stearate, Pentylene Glycol, Propanediol, C9-12 Alkane, Citric Acid, Glyceryl Stearate Se, Butyrospermum Parkii Butter, Tetrahexyldecyl Ascorbate, Kojic Acid, Resveratrol, Tocopheryl Acetate, Diethylhexyl Syringylidenemalonate, Hydrangea Arborescens Root Extract, Morus Alba Root Extract, Scutellaria Lateriflora Extract, Hydrolyzed Vegetable Protein, Silica, Sodium Stearoyl Glutamate, Coco-Caprylate/Caprate, Dimethiconol, Glycerin, Sodium Phytate, Potassium Sorbate, Sodium Benzoate, Caprylyl Glycol, Hexylene Glycol, Polysorbate 20, Ceteth-20, Steareth-20, Polyacrylate Crosspolymer-6, PEG-75 Stearate, Titanium Dioxide, Phenoxyethanol
Water
Skin ConditioningNiacinamide
Smoothing
Glycerin
Humectant
Phenyl Trimethicone
Skin Conditioning
Dimethyl Isosorbide
SolventOctyldodecanol
EmollientResveratrol
Antioxidant
Diglucosyl Gallic Acid
Asiaticoside
Antioxidant
Madecassoside
Antioxidant
Epigallocatechin Gallatyl Glucoside
Antioxidant
Boswellia Serrata Resin Extract
SmoothingCurcuma Longa Root Extract
Masking
Ocimum Basilicum Flower/Leaf Extract
TonicOcimum Sanctum Leaf Extract
Skin Conditioning
Aloe Barbadensis Flower Extract
EmollientSolanum Melongena Fruit Extract
Skin ConditioningCoccinia Indica Fruit Extract
Skin ConditioningBetaine
Humectant
Corallina Officinalis Extract
Skin Conditioning
Melia Azadirachta Flower Extract
Skin ConditioningMelia Azadirachta Leaf Extract
Skin ConditioningBenzotriazolyl Dodecyl P-Cresol
UV AbsorberPEG-8
HumectantTetrahydrodiferuloylmethane
Antioxidant
Tetrahydrodemethoxydiferuloylmethane
Antioxidant
Tetrahydrobisdemethoxydiferuloylmethane
Antioxidant
Punica Granatum Fruit Extract
Antioxidant
Argania Spinosa Kernel Oil
Emollient
Citrus Aurantium Dulcis Peel Extract
Emulsion Stabilising
Citrus Grandis Peel Extract
Astringent
Citrus Tangerina Peel Oil
Masking
Calendula Officinalis Flower Extract
Masking
Citrus Limon Peel Oil
Masking
Sodium Phytate
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingPolysorbate 60
Emulsifying
Sorbitan Isostearate
Emulsifying
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Polyglyceryl-10 Stearate
Skin Conditioning
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingDimethicone
Emollient
Trideceth-6
EmulsifyingPEG/PPG-18/18 Dimethicone
Emulsifying
Tocopherol
Antioxidant
Phenoxyethanol
Preservative
Caprylyl Glycol
EmollientChlorphenesin
Antimicrobial
Triethyl Citrate
Masking
Water, Niacinamide, Glycerin, Phenyl Trimethicone, Dimethyl Isosorbide, Octyldodecanol, Resveratrol, Diglucosyl Gallic Acid, Asiaticoside, Madecassoside, Epigallocatechin Gallatyl Glucoside, Boswellia Serrata Resin Extract, Curcuma Longa Root Extract, Ocimum Basilicum Flower/Leaf Extract, Ocimum Sanctum Leaf Extract, Aloe Barbadensis Flower Extract, Solanum Melongena Fruit Extract, Coccinia Indica Fruit Extract, Betaine, Corallina Officinalis Extract, Melia Azadirachta Flower Extract, Melia Azadirachta Leaf Extract, Benzotriazolyl Dodecyl P-Cresol, PEG-8, Tetrahydrodiferuloylmethane, Tetrahydrodemethoxydiferuloylmethane, Tetrahydrobisdemethoxydiferuloylmethane, Punica Granatum Fruit Extract, Argania Spinosa Kernel Oil, Citrus Aurantium Dulcis Peel Extract, Citrus Grandis Peel Extract, Citrus Tangerina Peel Oil, Calendula Officinalis Flower Extract, Citrus Limon Peel Oil, Sodium Phytate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Polysorbate 60, Sorbitan Isostearate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Polyglyceryl-10 Stearate, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Dimethicone, Trideceth-6, PEG/PPG-18/18 Dimethicone, Tocopherol, Phenoxyethanol, Caprylyl Glycol, Chlorphenesin, Triethyl Citrate
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 WaterNiacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.
And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.
You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.
In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.
If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.
When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.
When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.
In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).
Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.
Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.
The type of niacinamide used in skincare is synthetically created.
Learn more about NiacinamideDimethyl 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 IsosorbideDimethicone is a type of synthetic silicone created from natural materials such as quartz.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
Learn more about DimethiconeResveratrol is a famous emerging antioxidant. It is a good alternative for sensitive skin types who cannot tolerate retinoids.
This antioxidant is most famous for it's anti-aging benefits. Studies show it combats the signs of aging by:
Besides anti-aging, this ingredient also helps with skin brightening and soothing.
The most effective forms of resveratrol are isobutyrate and butyrate. These have the strongest effect on increasing A1 collagen and reducing inflammation.
A note on it being a retinoid alternative: Despite it's amazing skin benefits, it is not a replacement for retinoids. However, it is recommended for people with sensitive skin or intolerance to retinoids.
Resveratrol is naturally found in grapes, peanuts, and berries.
Learn more about ResveratrolGlycerin 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 Phytate is the synthetic salt form of phytic acid. Phytic acid is an antioxidant and can be found in plant seeds.
Sodium Phytate is a chelating agent. Chelating agents help prevent metals from binding to water. This helps stabilize the ingredients and the product.
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 GlycolPhenoxyethanol 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.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients
Sunday Riley B3 Nice 10% Niacinamide Serum 49 ingredients
