Sunday Riley C.E.O. 15% Vitamin C Brightening Serum
Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment
Versus

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum Versus Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment

Serum
Facial Treatment
American Brand United States
American Brand United States

Updated on May 29, 2025

Overview

Cool Features

They both contain AHA, 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, parabens 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.

New Comparison

Ingredient Info

Click any item below to learn more and see relevant ingredients

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients

Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 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

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients

Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients

Key Ingredients

Benefits

Concerns

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
C.E.O. 15% Vitamin C Brightening Serum

Water

Skin Conditioning

Tetrahexyldecyl Ascorbate

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

Squalane

Emollient
1 / 0 Helps hydrate Dry Skin Icon

Polyglyceryl-6 Distearate

Emulsifying
Not safe for Fungal Acne Icon

PEG-8 Beeswax

Emulsifying
Not safe for Fungal Acne Icon

PPG-12/Smdi Copolymer

Emollient

Glycine Soja Sterols

Emollient
0 / 0 Helps hydrate Dry Skin IconNot safe for Fungal Acne Icon

Sodium Phytate

Tocopherol

Antioxidant
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing Icon

Acetamidoethoxyethanol

Humectant
Helps hydrate Dry Skin Icon

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Emulsion Stabilising

Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Emulsion Stabilising

Jojoba Esters

Emollient
Not safe for Fungal Acne Icon

Glycolic Acid

Buffering
AHA 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 IconMay worsen Rosacea Icon

Caprylyl Glycol

Emollient

Cetyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Polyglyceryl-3 Beeswax

Emulsifying
Not safe for Fungal Acne Icon

Chlorphenesin

Antimicrobial
Preservative Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Polysorbate 60

Emulsifying
Not safe for Fungal Acne Icon

Sorbitan Isostearate

Emulsifying
1-2 / 0 Not safe for Fungal Acne Icon

Saccharide Isomerate

Humectant
Helps hydrate Dry Skin Icon

Citrus Aurantium Dulcis Peel Oil

Masking
Oil Icon

Citrus Tangerina Peel Oil

Masking
Oil IconMay cause irritation Icon

Linalool

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Limonene

Perfuming
Fragrance IconMay cause irritation IconEU Allergen IconMay worsen Eczema IconMay worsen Rosacea Icon

Phenoxyethanol

Preservative
Preservative Icon

Water, Tetrahexyldecyl Ascorbate, Squalane, Polyglyceryl-6 Distearate, PEG-8 Beeswax, PPG-12/Smdi Copolymer, Glycine Soja Sterols, Sodium Phytate, Tocopherol, Acetamidoethoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Glycolic Acid, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Chlorphenesin, Glycerin, Polysorbate 60, Sorbitan Isostearate, Saccharide Isomerate, Citrus Aurantium Dulcis Peel Oil, Citrus Tangerina Peel Oil, Linalool, Limonene, Phenoxyethanol

Potent-C Niacinamide Discoloration Treatment

Water

Skin Conditioning

Niacinamide

Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne IconHelps brighten skin Icon

Dimethyl Isosorbide

Solvent

Isononyl Isononanoate

Emollient

Tranexamic Acid

Astringent
Helps reduce irritation IconGood for Dark Spots IconGood for Scar Healing Icon

Dimethicone

Emollient
1 / 0 Silicon Icon

Caprylic/Capric Triglyceride

Masking
Helps hydrate Dry Skin Icon

Alpha-Arbutin

Antioxidant
Antioxidant IconGood for Dark Spots IconGood for Scar Healing Icon

Cetyl Alcohol

Emollient
2 / 2 Fatty Alcohol Icon

Glyceryl Stearate

Emollient
1 / 0 Not safe for Fungal Acne Icon

Pentylene Glycol

Skin Conditioning

Propanediol

Solvent
Helps hydrate Dry Skin Icon

C9-12 Alkane

Solvent

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

Glyceryl Stearate Se

Emulsifying
3 / 2 Bad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Butyrospermum Parkii Butter

Skin Conditioning
Helps hydrate Dry Skin IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon

Tetrahexyldecyl Ascorbate

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

Kojic Acid

Antioxidant
Antioxidant IconGood for Dark Spots IconGood for Scar Healing IconHelps fight Acne Icon

Resveratrol

Antioxidant
Antioxidant IconHelps reduce irritation IconHelps with Anti-Aging IconGood for Dark Spots Icon

Tocopheryl Acetate

Antioxidant
0 / 0 Vitamin E IconAntioxidant Icon

Diethylhexyl Syringylidenemalonate

Skin Protecting

Hydrangea Arborescens Root Extract

Skin Conditioning

Morus Alba Root Extract

Bleaching

Scutellaria Lateriflora Extract

Skin Conditioning

Hydrolyzed Vegetable Protein

Skin Conditioning

Silica

Abrasive
Exfoliant IconMay worsen Eczema IconMay worsen Rosacea Icon

Sodium Stearoyl Glutamate

Cleansing

Coco-Caprylate/Caprate

Emollient
Not safe for Fungal Acne Icon

Dimethiconol

Emollient
Silicon Icon

Glycerin

Humectant
0 / 0 Helps hydrate Dry Skin IconGood for Scar Healing IconHelps brighten skin Icon

Sodium Phytate

Potassium Sorbate

Preservative
Preservative Icon

Sodium Benzoate

Masking
Preservative Icon

Caprylyl Glycol

Emollient

Hexylene Glycol

Emulsifying
0-2 / 0-1

Polysorbate 20

Emulsifying
0 / 0 Not safe for Fungal Acne Icon

Ceteth-20

Cleansing

Steareth-20

Cleansing
2 / 1

Polyacrylate Crosspolymer-6

Emulsion Stabilising

PEG-75 Stearate

Not safe for Fungal Acne Icon

Titanium Dioxide

Cosmetic Colorant
0 / 0 Mineral UV Filter IconNon-Reef-Safe Icon

Phenoxyethanol

Preservative
Preservative Icon

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

Ingredient Ratings

Here's what our community thinks of the ingredients in these products.

C.E.O. 15% Vitamin C Brightening Serum
10
10
10
liked
disliked
not rated
Unlock with Premium
Potent-C Niacinamide Discoloration Treatment
10
10
10
liked
mixed
disliked
not rated
Unlock with Premium

When to use

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients

Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients

275 Routines
89% use in am
11% use in pm
91% use every day
When to use See routines that use it ->
5 Routines
20% use in am
80% use in pm
100% use every day

Reviews

Here's what our community thinks

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum 27 ingredients

5.00
Overall rating
5
4
3
2
1

Peter Thomas Roth Potent-C Niacinamide Discoloration Treatment 42 ingredients

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