Potent C Brightening Vitamin C Moisturizer
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.
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.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Water
(Solvent) |
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Tetrahexyldecyl Ascorbate
(Antioxidant, Skin Conditioning) |
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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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C9-12 Alkane
(Solvent) |
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
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Behenyl Alcohol
(Binding Agent, Emulsion Stabilising, Viscosity Increasing Agent, Binding, Emollient, Viscosity Controlling) |
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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
Fungal Acne Trigger
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Cetyl Palmitate
(Fragrance, Emollient, Masking, Skin Conditioning) |
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Polyglyceryl-2 Stearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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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
Fungal Acne Trigger
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Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling) |
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Oleic Acid
(Fragrance, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Oleic Acid., Emollient, Emulsifying) |
Fungal Acne Trigger
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Soy Acid
(Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Soy Acid., Emollient, Refatting) |
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Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial) |
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Brassica Oleracea Acephala Leaf Extract
(Humectant, Skin Conditioning) |
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Olea Europaea Fruit Extract
(Bleaching, Skin Conditioning) |
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Hydrolyzed Collagen
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Emollient, Film Forming, Humectant) |
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Elastin
(Hair Conditioning, Skin Conditioning, Smoothing) |
Good for Dry Skin
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Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
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Ceramide NP
(Hair Conditioning, Skin Conditioning) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling) |
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Wheat Amino Acids
(Hair Conditioning, Skin Conditioning, Skin Protecting, Soothing) |
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Glycine Soja Sterols
(Skin Conditioning, Skin Conditioning Emollient) |
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Saccharomyces Ferment
(Skin Conditioning) |
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Jojoba Esters
(Emollient, Moisturising, Skin Conditioning, Soothing) |
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Olus oil
(Skin Conditioning Emollient) |
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Glyceryl Stearate
(Emollient, Emulsifying) |
Fungal Acne Trigger
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Gluconolactone
(Fragrance, Humectant, Solvent) |
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Calcium Gluconate
(Skin Conditioning, Humectant, Oral Care Agent) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning) |
Good for Dry Skin
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Sodium Stearoyl Lactylate
(Emulsifying, Surfactant) |
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Myristic Acid
(Fragrance, Opacifying, Sufactant, Emulsifying, Perfuming) |
Bad for Oily Skin
Fungal Acne Trigger
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Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
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Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic) |
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Lauroyl Lysine
(Hair Conditioning, Skin Conditioning, Viscosity Controlling) |
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Arachidic Acid
(Opacifying, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Arachidic Acid., Emulsifying) |
Fungal Acne Trigger
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Lauric Acid
(Fragrance, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Lauric Acid., Emulsifying) |
Bad for Oily Skin
Fungal Acne Trigger
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Potassium Sorbate
(Fragrance, Preservative) |
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Coco-Caprylate/Caprate
(Emollient, Skin Conditioning) |
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Sodium Carboxymethyl Beta-Glucan
(Binding, Cleansing, Viscosity Controlling) |
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Histidine HCl
(Hair Conditioning, Skin Conditioning, Antioxidant, Reducing) |
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Carnosine
(Skin Conditioning) |
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Polyglyceryl-6 Distearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Arachidyl Alcohol
(Emulsion Stabilising, Viscosity Increasing Agent, Emollient, Viscosity Controlling) |
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Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling) |
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Lauryl Alcohol
(Emollient, Emulsifying, Emulsion Stabilising, Viscosity Controlling) |
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Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Polyglyceryl-3 Beeswax
(Emulsifying, Surfactant) |
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
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Mica
(Cosmetic Colorant, Opacifying) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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CI 15985
(Cosmetic Colorant) |
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CI 19140
(Colorant, Cosmetic Colorant) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
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
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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