FIRMx Collagen Serum
The Peter Thomas Roth FIRMx Collagen Serum is a serums, essence, ampoule. Our analysis of its 39 ingredients (38 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry skin.
The Peter Thomas Roth FIRMx Collagen Serum is a serums, essence, ampoule. Our analysis of its 39 ingredients (38 low-risk) rates it Excellent (99/100). 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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Collagen
(Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
|
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|
Water
(Solvent) |
|
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|
|
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
|
|
|
|
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
|
|
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|
Polysilicone-11
(Film Forming) |
|
|
|
|
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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|
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Caffeine
(Fragrance, Skin Conditioning, Masking) |
|
|
|
|
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning) |
|
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Soluble Collagen
(Hair Conditioning, Skin Conditioning, Antistatic Agent, Film Forming, Humectant) |
|
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|
Collagen Amino Acids
(Hair Conditioning, Skin Conditioning, Moisturising) |
|
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Hydrolyzed Collagen
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Emollient, Film Forming, Humectant) |
|
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Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine
(Skin Conditioning) |
|
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Palmitoyl Tripeptide-5
(Skin Conditioning) |
|
|
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|
Acetyl Tetrapeptide-2
(Skin Conditioning) |
|
|
|
|
Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
|
|
|
|
Hydroxyproline
(Hair Conditioning, Skin Conditioning, Antistatic Agent, Surfactant) |
|
|
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Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
|
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
|
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|
Acrylamide/Sodium Acryloyldimethyltaurate Copolymer
(Emulsion Stabilising, Viscosity Controlling) |
|
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Ammonium Acryloyldimethyltaurate/VP Copolymer
(Viscosity Controlling) |
|
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Hydroxystearic Acid
(Cleansing, Emulsifying, Surfactant) |
|
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Magnesium Chloride
(Viscosity Controlling) |
|
|
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|
Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
|
|
Polysorbate 80
(Denaturant, Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
|
|
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
|
|
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Sorbitan Isostearate
(Emulsifying, Surfactant) |
|
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Decyl Glucoside
(Cleansing, Emulsion Stabilising, Surfactant) |
|
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Lauryl Glucoside
(Cleansing, Surfactant) |
|
|
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Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate
(Skin Conditioning) |
|
|
|
|
Leuconostoc/Radish Root Ferment Filtrate
(Antidandruff Agent, Antimicrobial) |
|
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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
|
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Potassium Sorbate
(Fragrance, Preservative) |
|
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
|
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Isohexadecane
(Skin Conditioning, Emollient, Solvent) |
|
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
|
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Hexylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Emulsifying, Perfuming, Skin Conditioning, Surfactant) |
|
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
|
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
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Mica
(Cosmetic Colorant, Opacifying) |
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How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
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