Syn-Coll
A synthetic signal peptide that mimics thrombospondin-1 to activate TGF-beta signaling, stimulating type I and III collagen production in dermal fibroblasts for anti-wrinkle and skin-firming effects.
What is Syn-Coll?
Syn-Coll (Palmitoyl Tripeptide-5) is a synthetic lipopeptide developed by Pentapharm (now dsm-firmenich) consisting of three amino acids — lysine-valine-lysine (Lys-Val-Lys) — conjugated to palmitic acid for enhanced skin penetration. It is classified as a signal peptide: it mimics a functional motif of thrombospondin-1 (TSP-1), an extracellular matrix glycoprotein that activates latent transforming growth factor-beta (TGF-beta). By triggering TGF-beta signaling, Syn-Coll stimulates dermal fibroblasts to increase production of type I and type III collagen, fibronectin, and other extracellular matrix proteins. It also inhibits collagen-degrading matrix metalloproteinases (MMP-1 and MMP-3), providing dual action — building new collagen while protecting existing collagen from enzymatic breakdown. Its molecular formula is C33H65N5O5 with a molecular weight of approximately 612 Da (CAS 623172-56-5).
Why People Talk About It
Wrinkle reduction and skin smoothing (topical)
PreliminaryCollagen stimulation via TGF-beta activation
PreliminarySkin firming and elasticity improvement
PreliminaryMMP inhibition and collagen protection
LimitedAnti-aging skincare (as Palmitoyl Tripeptide-5)
PreliminaryHow It Works
Syn-Coll tricks your skin into making more collagen. It mimics a natural protein called thrombospondin-1 that activates TGF-beta, one of the most powerful signals telling fibroblasts (skin's collagen factories) to produce collagen. When Syn-Coll activates TGF-beta, fibroblasts ramp up production of type I and type III collagen — the structural proteins that keep skin firm and smooth. At the same time, Syn-Coll blocks MMP-1 and MMP-3, enzymes that break down existing collagen. The result is a two-pronged approach: more collagen production plus less collagen destruction.
Common Questions
Safety Information
Common Side Effects
Cautions
- • Not FDA-approved as a drug — marketed as a cosmeceutical ingredient
- • Injectable use is not established for humans
- • TGF-beta activation has complex downstream effects — topical use keeps activity localized to skin
- • Most efficacy data comes from manufacturer-sponsored studies, not independent peer-reviewed trials
- • Quality and concentration vary across cosmeceutical and research suppliers
What We Don't Know
Long-term safety of topical Syn-Coll is supported by widespread cosmeceutical use but not by formal long-term clinical trials. The Cosmetic Ingredient Review (CIR) panel has deemed palmitoyl oligopeptides safe for topical cosmetic use, but systemic effects of injectable or oral administration have not been studied. The extent to which topical TGF-beta activation translates to meaningful dermal collagen remodeling in vivo — versus surface-level improvements — remains an open question.
Published Research
9 studiesDelivery of Active Peptides by Self-Healing, Biocompatible and Supramolecular Hydrogels
Explores hydrogel delivery systems for palmitoyl tripeptide-5 and transdermal permeation.
Usage of Synthetic Peptides in Cosmetics for Sensitive Skin
Identifies palmitoyl tripeptide-5 as a signal peptide in 17% of analyzed cosmetics for sensitive skin, noting limited independent clinical evidence.
Thrombospondin-1 regulation of latent TGF-beta activation: a therapeutic target for fibrotic disease
Reviews TSP-1 as a major activator of TGF-beta1 in vivo and its role in tissue repair and fibrosis.
Activation of latent TGF-beta by thrombospondin-1: mechanisms and physiology
Foundational review of TSP-1-mediated TGF-beta activation mechanism that Syn-Coll is designed to mimic.
The activation sequence of thrombospondin-1 interacts with the latency-associated peptide to regulate activation of latent transforming growth factor-beta
Characterizes the KRFK activation sequence in TSP-1 and its interaction with LAP to activate latent TGF-beta.
Regulation of transforming growth factor-beta activation by discrete sequences of thrombospondin 1
Identifies specific TSP-1 sequences responsible for TGF-beta activation, establishing the molecular basis for Syn-Coll's design.
Topical Peptide Treatments with Effective Anti-Aging Results
Comprehensive review of cosmeceutical peptides including palmitoyl tripeptide-5 as a signal peptide that stimulates collagen via TGF-beta.
Current Approaches in Cosmeceuticals: Peptides, Biotics and Marine Biopolymers
Reviews Syn-Coll as a TSP-1 mimetic that upregulates TGF-beta to enhance collagen synthesis and skin elasticity.
Cosmeceutical Peptides in the Framework of Sustainable Wellness Economy
Reviews cosmeceutical peptides including signal peptides that modulate TGF-beta for collagen stimulation.
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Quick Facts
- Class
- Cosmeceutical Peptide
- Evidence
- Preliminary
- Safety
- Moderate Data
- Updated
- Apr 2026
- Citations
- 9PubMed
Also known as
Tags
Related Goals
Evidence Score
Clinical Trials
View Clinical TrialsLinks to ClinicalTrials.gov for reference. Listing does not imply endorsement.