---
title: Lupo MP, Cole AL, “Cosmeceutical peptides” (Dermatologic Therapy)
entity_type: Source
canonical_url: https://skinknowledgebase.com/sources/lupo-cole-cosmeceutical-peptides
date_modified: 2026-05-07
date_reviewed: 2026-05-07
mcp_eligible: true
source_type: peer_reviewed
original_source_url: https://pubmed.ncbi.nlm.nih.gov/18045359/
evidence_sources: []
product_fact_sources: []
---

# Lupo MP, Cole AL, “Cosmeceutical peptides” (Dermatologic Therapy)

## Quick Summary

A peer-reviewed dermatologic review on cosmeceutical peptides written for a clinical-dermatology audience. Lupo and Cole walk through the major peptide classes used in over-the-counter anti-aging skincare, including the Matrixyl pentapeptide signaling story, with a clinician-facing assessment of what the published cosmetic-appearance evidence does and does not show.

## What Studied

The article is a narrative review of cosmeceutical peptide categories — signal, carrier, and neurotransmitter-influencing peptides — and the published cosmetic-appearance studies cited for each. It treats Pal-KTTKS / Matrixyl pentapeptide as a prototypical signal peptide and discusses how the class is positioned in dermatology practice.

## Main Findings

The review reports that signal peptides such as the Matrixyl pentapeptide are associated with reported improvements in the look of fine lines and wrinkles in the cited cosmetic-appearance studies, while making clear that effect sizes are modest and that peptide cosmetics are not a substitute for prescription anti-aging therapy. The authors describe peptides as part of a layered cosmetic-appearance routine rather than as a standalone hero ingredient.

## Why It Matters

This source gives the Question its honest evidence-base framing for a dermatologist-leaning audience. It supports the cosmetic-appearance benefit story for Matrixyl while clearly bounding the claim — useful for the "does it really work" arc of the answer.

## Related Entities

- [Topical Collagen](https://skinknowledgebase.com/ingredients/topical-collagen)
- [Fine Lines](https://skinknowledgebase.com/concerns/fine-lines)
- [Wrinkles](https://skinknowledgebase.com/concerns/wrinkles)
- [Dermagist Collastin](https://skinknowledgebase.com/products/dermagist-collastin)
- [Matrixyl](https://skinknowledgebase.com/ingredients/matrixyl)
- [What does Matrixyl do for skin?](https://skinknowledgebase.com/questions/what-does-matrixyl-do-for-skin)
- [Does collagen cream actually work for wrinkles?](https://skinknowledgebase.com/questions/does-collagen-cream-actually-work-for-wrinkles)