Potent C Brightening Vitamin C Moisturizer

Peter Thomas Roth

Potent C Brightening Vitamin C Moisturizer

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About this product

The Peter Thomas Roth Potent C Brightening Vitamin C Moisturizer is a emulsion. Our analysis of its 59 ingredients (50 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to dry skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Emulsion
Ingredients
59
Low-risk
50
Fragrance
Fragrance-free
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 23/16
Good for dry skin
Gluconolactone Glyceryl Stearate Lauryl Alcohol Behenyl Alcohol Cetyl Alcohol Cetyl Palmitate Stearyl Alcohol Arachidyl Alcohol Oleic Acid Calcium Gluconate Sodium PCA Sodium Hyaluronate Glycerin Coco-Caprylate/Caprate Palmitic Acid Polyglyceryl-2 Stearate Polyglyceryl-6 Distearate Hydrolyzed Collagen Jojoba Esters Sodium Lactate Lactic Acid Brassica Oleracea Acephala Leaf Extract Soy Acid
Caution for dry skin
Lauric Acid Cetyl Alcohol Sodium Stearoyl Lactylate Sodium Carboxymethyl Beta-Glucan Stearic Acid Stearyl Alcohol Arachidic Acid Oleic Acid Xanthan Gum Glycerin Palmitic Acid Polyglyceryl-2 Stearate Polyglyceryl-3 Beeswax Polyglyceryl-6 Distearate Sodium Hydroxide Soy Acid
Oily/Acne-Prone Skin No data
Sensitive Skin 7/14
Good for sensitive skin
Wheat Amino Acids Glycerin Tetrahexyldecyl Ascorbate Jojoba Esters Histidine HCl Ferulic Acid Tocopheryl Acetate
Caution for sensitive skin
Gluconolactone Lauric Acid Myristic Acid Cetyl Alcohol Cetyl Palmitate Stearic Acid Stearyl Alcohol Oleic Acid Glycerin Palmitic Acid Sodium Benzoate Potassium Sorbate Lactic Acid Phenoxyethanol

Ingredients list

59 total
Lower hazard (1) Higher hazard (4)
All59 Skin Conditioning38 Fragrance15 Emollient15 Emulsifying14 Emulsion Stabilising14 Viscosity Controlling12 Humectant11 Viscosity Increasing Agent9
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
C9-12 Alkane
(Solvent)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
A
Behenyl Alcohol
(Binding Agent, Emulsion Stabilising, Viscosity Increasing Agent, Binding, Emollient, Viscosity Controlling)
1
A
Palmitic Acid
(Fragrance, Opacifying, Sufactant, Surfactant Emulsifying Agentsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Palmitic Acid., Emollient)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
1
B
Cetyl Palmitate
(Fragrance, Emollient, Masking, Skin Conditioning)
1
B
Polyglyceryl-2 Stearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
A
Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
1
A
Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling)
1
A
Oleic Acid
(Fragrance, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Oleic Acid., Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
A
Soy Acid
(Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Soy Acid., Emollient, Refatting)
2
Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial)
Brassica Oleracea Acephala Leaf Extract
(Humectant, Skin Conditioning)
Olea Europaea Fruit Extract
(Bleaching, Skin Conditioning)
1
A
Hydrolyzed Collagen
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Emollient, Film Forming, Humectant)
1
Elastin
(Hair Conditioning, Skin Conditioning, Smoothing)
Good for Dry Skin
Good for Dry Skin
Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic)
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling)
1
A
Wheat Amino Acids
(Hair Conditioning, Skin Conditioning, Skin Protecting, Soothing)
Glycine Soja Sterols
(Skin Conditioning, Skin Conditioning Emollient)
1
Saccharomyces Ferment
(Skin Conditioning)
1
A
Jojoba Esters
(Emollient, Moisturising, Skin Conditioning, Soothing)
Olus oil
(Skin Conditioning Emollient)
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
Gluconolactone
(Fragrance, Humectant, Solvent)
1
A
Calcium Gluconate
(Skin Conditioning, Humectant, Oral Care Agent)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
Sodium Stearoyl Lactylate
(Emulsifying, Surfactant)
1
A
Myristic Acid
(Fragrance, Opacifying, Sufactant, Emulsifying, Perfuming)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
3
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
1
B
Lauroyl Lysine
(Hair Conditioning, Skin Conditioning, Viscosity Controlling)
1
Arachidic Acid
(Opacifying, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Arachidic Acid., Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
A
Lauric Acid
(Fragrance, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Lauric Acid., Emulsifying)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
3
A
Potassium Sorbate
(Fragrance, Preservative)
1
B
Coco-Caprylate/Caprate
(Emollient, Skin Conditioning)
1
A
Sodium Carboxymethyl Beta-Glucan
(Binding, Cleansing, Viscosity Controlling)
1
A
Histidine HCl
(Hair Conditioning, Skin Conditioning, Antioxidant, Reducing)
1
Carnosine
(Skin Conditioning)
1
B
Polyglyceryl-6 Distearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
Arachidyl Alcohol
(Emulsion Stabilising, Viscosity Increasing Agent, Emollient, Viscosity Controlling)
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
1
Lauryl Alcohol
(Emollient, Emulsifying, Emulsion Stabilising, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
B
Polyglyceryl-3 Beeswax
(Emulsifying, Surfactant)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
2
Mica
(Cosmetic Colorant, Opacifying)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
CI 15985
(Cosmetic Colorant)
3
CI 19140
(Colorant, Cosmetic Colorant)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Tetrahexyldecyl Ascorbate
Antioxidant, Skin Conditioning
Glycerin
Humectant, Skin Protecting
Tocopheryl Acetate
Antioxidant, Skin Conditioning
Behenyl Alcohol
Emollient
Palmitic Acid
Emollient
Cetyl Palmitate
Emollient, Skin Conditioning

Benefits

Good for dry skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Tetrahexyldecyl Ascorbate
Antioxidant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 AntioxidantSkin conditioning
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
C9-12 Alkane
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Behenyl Alcohol
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingViscosity increasing agentBindingEmollientViscosity controlling
Cetyl Palmitate
Fragrance, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B FragranceEmollientMaskingSkin conditioning
Polyglyceryl-2 Stearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifyingSurfactant
Stearyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceEmulsifyingSurfactant- foamboosterViscosity increasing agentEmollientFoam boostingMaskingOpacifyingRefattingViscosity controlling
Soy Acid
Sufactant, Emulsifying
Limited public safety data.Read moreShow less
EWG N/A CIR A SufactantEmulsifyingSurfactantsurfactant-cleansing agent is included as a function for the soap form of soy acid.EmollientRefatting
Ferulic Acid
Antioxidant, Preservative
Low-hazard ingredient.Read moreShow less
EWG 2 AntioxidantPreservativeUv absorberAntimicrobial
Brassica Oleracea Acephala Leaf Extract
Humectant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A HumectantSkin conditioning
Olea Europaea Fruit Extract
Bleaching, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A BleachingSkin conditioning
Hydrolyzed Collagen
Hair conditioning, Nail conditioning agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningNail conditioning agentSkin conditioningAntistatic agentEmollientFilm formingHumectant
Zingiber Officinale Root Extract
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfumingSkin conditioningTonic
Ceramide NP
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
+ 30 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Palmitic Acid
Fragrance, Opacifying
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceOpacifyingSufactantSurfactant -emulsifying agentsurfactant-cleansing agent is included as a function for the soap form of palmitic acid.Emollient Bad for Oily SkinFungal-acne trigger
Stearic Acid
Fragrance, Sufactant
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSufactantEmulsifyingSurfactantsurfactant-cleansing agent is included as a function for the soap form of stearic acid.Emulsion stabilisingMaskingRefatting Bad for Oily SkinFungal-acne trigger
Oleic Acid
Fragrance, Sufactantsurfactant-cleansing agent is included as a function for the soap form of oleic acid.
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSufactantsurfactant-cleansing agent is included as a function for the soap form of oleic acid.EmollientEmulsifying Fungal-acne trigger
Elastin
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioningSmoothing Good for Dry Skin
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
Myristic Acid
Fragrance, Opacifying
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceOpacifyingSufactantEmulsifyingPerfuming Bad for Oily SkinFungal-acne trigger
Arachidic Acid
Opacifying, Sufactantsurfactant-cleansing agent is included as a function for the soap form of arachidic acid.
Low-hazard ingredient.Read moreShow less
EWG 1 OpacifyingSufactantsurfactant-cleansing agent is included as a function for the soap form of arachidic acid.Emulsifying Fungal-acne trigger
Lauric Acid
Fragrance, Sufactantsurfactant-cleansing agent is included as a function for the soap form of lauric acid.
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSufactantsurfactant-cleansing agent is included as a function for the soap form of lauric acid.Emulsifying Bad for Oily SkinFungal-acne trigger
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.
  • 2 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Officially notified as a cosmetic in Malaysia (NPRA). Government registration record.

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

Tetrahexyldecyl Ascorbate

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic Acid

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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