Palmitoyl Tripeptide-5
low riskAlso: SYN-COLL · Pal-KVK · Palmitoyl-Lys-Val-Lys · SYN-COLL peptide
Palmitoyl Tripeptide-5 (trade name SYN-COLL by Pentapharm/DSM) is a lipidated tripeptide designed to mimic the TGF-β (transforming growth factor beta) binding domain. TGF-β is a key regulator of collagen synthesis in dermal fibroblasts, and Palmitoyl Tripeptide-5 activates this pathway without the growth factor itself. In vitro data and several clinical studies support its ability to stimulate collagen I production and reduce visible wrinkle depth. It is among the more mechanistically specific cosmetic peptides available.
Reported Benefits
Collagen I and III synthesis
In vitro studies on human dermal fibroblasts consistently show increased collagen I production. Clinical studies (SYN-COLL validation data) support this with measurable skin parameter improvements.
Wrinkle depth reduction
Manufacturer-sponsored clinical studies report statistically significant reductions in wrinkle depth after 12 weeks at 3% SYN-COLL complex concentration. Independent replication is limited.
Skin firmness and elasticity
Clinical evaluations using Cutometer measurements show modest improvement in skin elastic recovery; results consistent but effect sizes are small.
Mechanism of Action
Palmitoyl Tripeptide-5 mimics the sequence of thrombospondin-1, which activates latent TGF-β1 by releasing it from its inhibitory complex. Active TGF-β1 then signals through SMAD2/3 pathways in dermal fibroblasts to upregulate collagen I, collagen III, and fibronectin synthesis while downregulating MMP-1 (collagenase). The palmitoyl group serves the same penetration-enhancing function as in other palmitoyl peptides — facilitating transit through the stratum corneum.
Key Clinical Studies
Pentapharm (DSM) Clinical Data (2007)
Randomized, double-blind, split-face vs. placebo · 33
3% SYN-COLL reduced wrinkle depth by ~52% vs. 34% for placebo at 84 days (silicone replica analysis); statistically significant
Schagen et al. (2017)
Narrative review · Review
SYN-COLL and Palmitoyl Tripeptide-5 cited as among the better-evidenced cosmetic collagen-stimulating peptides
Overview
Palmitoyl Tripeptide-5 (SYN-COLL) was developed by Swiss specialty chemical company Pentapharm (now part of DSM) as a targeted TGF-β pathway activator for cosmetic applications. Unlike peptides that work through receptor binding or as direct growth factor analogs, Palmitoyl Tripeptide-5 works upstream — mimicking thrombospondin-1’s role in activating latent TGF-β already present in the dermis. This mechanism is theoretically more tissue-specific than broad growth factor stimulation and has driven interest in SYN-COLL as a precision collagen-induction ingredient.
Evidence Summary
The evidence is meaningful by cosmetic peptide standards. The in vitro mechanistic data is consistent and the proposed TGF-β pathway is well-characterized. Clinical data from the manufacturer’s studies shows measurable wrinkle reduction, though sample sizes are small (33 subjects) and studies are industry-sponsored. Independent academic replication is limited. The key limitation is that TGF-β signaling is pleiotropic — chronic upregulation of TGF-β in any context carries theoretical considerations, though cosmetic concentrations are far below thresholds relevant to pathological fibrosis.
Regulatory Status
Palmitoyl Tripeptide-5 is a cosmetic ingredient regulated under general cosmetic safety frameworks in the US (FDA), EU (ECHA/CosIng), and other jurisdictions. It is not a drug and does not require a prescription. INCI name: Palmitoyl Tripeptide-5.
Most Common Use Cases
Found in premium anti-aging serums, eye creams, and neck treatments. Often formulated alongside complementary peptides (Argireline for expression line reduction, Matrixyl for volume-based collagen stimulation) to address multiple mechanisms. Performs best in leave-on formulations with adequate penetration support (liposomal delivery or appropriate solvent vehicles). Most effective in the 1–3% SYN-COLL complex concentration range.
✦ Sponsored
Stop Guessing About Your Health. Start Optimizing It.
Advanced diagnostics and licensed medical providers delivering personalized longevity care to uncover root causes, optimize health, and track progress virtually or in person.
Learn More →
Regulatory Status
Research OnlySafety Profile
Side Effects
- •Generally well tolerated at cosmetic concentrations
- •Rare: mild irritation in sensitive skin types
Contraindications
- •Known hypersensitivity to constituent amino acids or palmitic acid
Drug Interactions
- •None established at cosmetic use concentrations
Primary Uses
Related Peptides
Planning a protocol?
Use the AI Stack Builder to generate a phased schedule, compatibility analysis, and monitoring checklist.
Weekly Briefing
Regulatory updates + new study breakdowns.
For Practitioners
Do you prescribe Palmitoyl Tripeptide-5?
Get in front of patients who've already researched this protocol and are ready to consult. Featured listings from $199/mo.
Get Listed →