Peter Thomas Roth Collagen Skinjection Plumping & Firming Serum — collagen peptides, exosomes & hydration

Peter Thomas Roth Collagen Skinjection™ Plumping & Firming Serum is a science-forward face serum that combines plant-derived exosomes, growth factor technology, and collagen-supporting ingredients to visibly boost the look of fullness and firmness.

This lightweight serum is formulated to address the appearance of lost volume and weakened skin resilience. Laboratory-backed actives—including plant-derived Exosomes, Growth Factor and Stem Cells—work alongside collagen, elastin, hyaluronic acid and glycerin to support a plumper-looking complexion while helping to reinforce the skin barrier. The texture absorbs smoothly and layers well under moisturizers and sunscreen.

How does this serum help improve the look of lost volume?

The formula targets multiple visual drivers of volume loss rather than a single symptom. Plant-derived exosomes and growth-supporting ingredients aim to encourage a healthier-looking skin environment, while collagen and elastin peptides help renew surface resilience for a fuller appearance.

• Plant-derived Exosomes and Growth Factor for skin-supportive signaling
• Collagen and elastin peptides to help restore visible firmness
• Hyaluronic acid and glycerin for immediate hydration and plumping
• Lightweight delivery that layers under makeup and creams

What results can I expect and when might I notice them?

Results vary by individual, but the serum is clinically tested to improve the appearance of youthful volume. Many users notice enhanced surface hydration quickly from humectants like hyaluronic acid, while firmer-looking texture and fullness may develop with consistent use over weeks.

• Immediate smoothing and hydration due to hyaluronic acid
• Progressively firmer-looking skin with routine application
• Clinically tested claims aimed at the look of improved volume
• Compatible with morning and evening regimens

How do I incorporate this into my skincare routine?

Apply the serum after cleansing and toning, before heavier creams or oils. A small amount spreads easily across the face and neck; follow with moisturizer and sunscreen in the daytime. Because the texture is non-greasy, it layers well with treatments and makeup.

• Use morning and/or night on cleansed skin
• Pat or press gently into face and neck until absorbed
• Follow with a moisturizer; use SPF during the day
• Works alongside serums that target pigmentation or exfoliation—alternate as needed

Is this serum suitable for sensitive or barrier-compromised skin?

The formula includes skin-strengthening ingredients designed to help support the barrier and deliver hydration. If you have known sensitivities, patch testing is recommended since actives like growth factors and botanically derived exosomes can vary in reactiveness between individuals.

• Contains humectants and peptides that support barrier hydration
• Designed to improve the look of skin resilience, not to act as a healing treatment
• Patch test before full-face use if you are reactive to active serums
• Layer with calming moisturizers if irritation appears

Who is this for: This serum is aimed at people noticing a decrease in facial fullness, loss of firmness, or a desire for a plumper-looking complexion without heavy creams. It suits those who prefer science-backed formulations and want a product that layers easily into existing routines, from hydration-first regimens to advanced anti-aging stacks. If you prioritize clinically tested actives and multi-benefit performance—hydration, visible plumping, and appearance of improved elasticity—this treatment serum is formulated to address those goals.

• Feature: Clinically tested formula helps to combat signs of collagen loss by improving the look of youthful volume.

Ingredients

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.