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Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum ingredients: is it worth it?
Mostly expensive hydration and optical plumping dressed up as collagen science—not a serious firming treatment.
Mostly expensive hydration and optical plumping dressed up as collagen science—not a serious firming treatment.
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The efficacy score is 3.3/5: glycerin, butylene glycol, sodium hyaluronate, dimethicone, and film-forming proteins can temporarily increase surface hydration and fullness, while the peptide complex may offer limited anti-aging support, but the formula provides no retinoid, vitamin C, niacinamide, exfoliating acid, or other high-evidence treatment active. Collagen, elastin, botanical extracts, and the product’s regeneration-oriented marketing do not meaningfully drive the score; several headline materials are positioned after the base and their concentrations and clinical relevance are unclear. The formula is adequately designed as a hydrating serum, but it does not demonstrate a clinically strong firming system.
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DemythSkin rates Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum 3.3/5 for efficacy and 4.5/5 for safety.
ACTIVE INGREDIENTS BY TIER
Gold Standards
High clinical proof | Skin-transformativeReliable
Proven resultsPotent
Developing evidenceOverhyped | Marketing
Hype | Limited dataDocumented Irritants
Evidence-backed flagFORMULATION BASE (15)⌄
FULL INGREDIENT LIST⌄
Water/Aqua/Eau, Glycerin, Butylene Glycol, Dicaprylyl Carbonate, Dimethicone, Isodecyl Neopentanoate, Mica, Nicotiana Benthamiana Hexapeptide-40 sh-Polypeptide-76, Althaea Rosea Flower Extract, Lycium Barbarum Callus Culture Extract, Hydrolyzed Collagen, Soluble Collagen, Hydrolyzed Elastin, Sodium Hyaluronate, Bifida Ferment Lysate, Citric Acid, Leuconostoc/Radish Root Ferment Filtrate, Olive Oil Polyglyceryl-6 Esters, Glycolipids, Lecithin, Xanthan Gum, Caprylyl/Capryl Glucoside, Sodium Cocoyl Glutamate, Isomalt, Sodium Phytate, Acacia Senegal Gum, Ethylhexylglycerin, Potassium Sorbate, Sodium Benzoate, Propanediol, Sodium Acryloyldimethyltaurate/VP Crosspolymer, Triethylhexanoin, Phenoxyethanol
WHAT EACH INGREDIENT DOES (24)⌄
- Water/Aqua/Eau
- Formula solvent
- Glycerin
- Humectant moisturizer
- Butylene Glycol
- Humectant and solvent
- Dicaprylyl Carbonate
- Light emollient
- Dimethicone
- Silicone skin protectant
- Isodecyl Neopentanoate
- Emollient texture enhancer
- Mica
- Light-reflecting mineral
- Nicotiana Benthamiana Hexapeptide-40 sh-Polypeptide-76
- Peptide complex
- Althaea Rosea Flower Extract
- Botanical conditioning extract
- Lycium Barbarum Callus Culture Extract
- Botanical conditioning extract
- Hydrolyzed Collagen
- Film-forming protein
- Soluble Collagen
- Film-forming protein
- Hydrolyzed Elastin
- Film-forming protein
- Sodium Hyaluronate
- Humectant skin hydrator
- Bifida Ferment Lysate
- Fermented skin conditioner
- Citric Acid
- pH adjuster
- Leuconostoc/Radish Root Ferment Filtrate
- Ferment-based preservative
- Olive Oil Polyglyceryl-6 Esters
- Emulsifier and emollient
- Glycolipids
- Emollient and emulsifier
- Lecithin
- Emulsifier and conditioner
- Xanthan Gum
- Viscosity control
- Caprylyl/Capryl Glucoside
- Nonionic solubilizer
- Sodium Cocoyl Glutamate
- Mild cleansing surfactant
- Isomalt
- Humectant and stabilizer
EXTERNAL CITATIONS
Glycerin: Well-established humectant that increases water content in the outer skin layer.
Sodium Hyaluronate: Hyaluronic-acid salt used as a topical humectant and temporary plumping agent.
Dimethicone: Silicone occlusive that reduces transepidermal water loss and improves skin feel.
DISCLAIMER: THIS ANALYSIS IS FOR INFORMATION ONLY. NOT MEDICAL ADVICE. AI-GENERATED DATA BASED ON PUBLICLY AVAILABLE INGREDIENT LISTS. VERIFY WITH A MEDICAL PROFESSIONAL.
A cheaper serum that scores as high or higher
A different formula for the same concern (hydration) that scores at least as high on both efficacy and safety.
Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum: common questions
Is Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum worth it?
Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum scores 3.3 out of 5.0 for efficacy (Mid) and 4.5 out of 5.0 for safety (Very Gentle) on DemythSkin's independent ingredient analysis. Mostly expensive hydration and optical plumping dressed up as collagen science—not a serious firming treatment.
What are the key active ingredients in Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum?
Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum contains no gold-standard actives. Its formula is built on supporting and base ingredients rather than clinically transformative actives.
Does Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum contain fragrance or known irritants?
DemythSkin's analysis found no flagged irritants in Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum. It scores 4.5 out of 5.0 for safety.
How is Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum scored?
DemythSkin grades every product on two independent scores: efficacy (whether the ingredients have clinical evidence of working) and safety (irritation and sensitisation risk). Ingredients are graded S through D against a database of over 3,000 compounds. Brand and price are not part of the score, and no brand pays for one.
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