Palmitoyl Tetrapeptide-7 vs Palmitoyl Tripeptide-1 — Peptide Comparison

At a Glance

Quickcomparison

Dose Range

Palmitoyl Tetrapeptide-7

0.5%–8% %

Palmitoyl Tripeptide-1

0.5%–3% %

Frequency

Once daily

Administration

Topical

Cycle Length

Ongoing/indefinite

Onset Speed

Moderate (1-2 weeks)

Evidence Level

Limited human trials

Efficacy

Benefitratings

Anti-Inflammatory

Anti-Aging

Skin Barrier Support

Collagen Production

Skin Firmness

Technical Data

Compoundspecifications

Molecular Formula

C34H62N8O7

Molecular Weight

694.9 Da

Half-Life

Susceptible to enzymatic degradation; palmitoyl anchor reduces proteolytic cleavage rate compared to unmodified peptide

Bioavailability

Enhanced topical penetration via palmitoyl lipid modification enabling membrane interaction and dermal delivery

CAS Number

221227-05-0

C30H54N6O5

578.8 Da

Limited data; peptide is susceptible to enzymatic degradation in skin but palmitoylation improves stability compared to unmodified GHK

Enhanced topical penetration via palmitoyl lipid modification; reaches dermis where fibroblasts reside

147732-56-7

Protocols

Dosingtiers

starting

Under 10 ppm (<0.001%) in finished product

Once or twice daily

Ongoing

Customary leave-on cosmetic use is below 10 ppm of the active peptide [6]. Pal-GQPR is almost always used as a co-active alongside Pal-GHK in the Matrixyl 3000 blend rather than on its own.

standard

~3% trade solution (Matrixyl 3000 blend)

Twice daily

~2 months

In manufacturer clinical testing the trade-solution blend was applied twice daily for about two months [6]. The ~3% figure refers to the diluted trade solution, which contains only ppm-level active peptide.

Customary leave-on cosmetic use is below 10 ppm of active peptide [6]. Pal-GHK is the signal-peptide core of the Matrixyl 3000 blend and is typically paired with Pal-GQPR.

Up to ~0.002% in finished product

Upper end of reported survey concentrations for leave-on products [6]. Even at this level the active peptide content is very low, which is normal for palmitoyl signal peptides.

Applications

Bestsuited for

Individuals with aging skin showing signs of chronic low-grade inflammation

Palmitoyl Tetrapeptide-7 is particularly well-suited for individuals focused on individuals with aging skin showing signs of chronic low-grade inflammation. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Those seeking to reduce UV-damage-related skin aging (photoaging)

Palmitoyl Tetrapeptide-7 is particularly well-suited for individuals focused on those seeking to reduce uv-damage-related skin aging (photoaging). Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

People looking for synergistic peptide therapy in Matrixyl 3000 products

Palmitoyl Tetrapeptide-7 is particularly well-suited for individuals focused on people looking for synergistic peptide therapy in matrixyl 3000 products. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Individuals with sensitive or reactive skin benefiting from anti-inflammatory peptides

Palmitoyl Tetrapeptide-7 is particularly well-suited for individuals focused on individuals with sensitive or reactive skin benefiting from anti-inflammatory peptides. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Individuals seeking comprehensive collagen stimulation through topical skincare

Palmitoyl Tripeptide-1 is particularly well-suited for individuals focused on individuals seeking comprehensive collagen stimulation through topical skincare. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Those with aging skin showing loss of firmness, elasticity, and density

Palmitoyl Tripeptide-1 is particularly well-suited for individuals focused on those with aging skin showing loss of firmness, elasticity, and density. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

People looking for non-invasive alternatives to injectable collagen treatments

Palmitoyl Tripeptide-1 is particularly well-suited for individuals focused on people looking for non-invasive alternatives to injectable collagen treatments. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Those seeking GHK-based skin benefits without copper peptide formulation complexity

Palmitoyl Tripeptide-1 is particularly well-suited for individuals focused on those seeking ghk-based skin benefits without copper peptide formulation complexity. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Safety Profile

Sideeffects

Common

Mild Redness

Slight Tingling

Mild Irritation with Other Actives

Dryness

Uncommon

Allergic Contact Dermatitis

Serious

Paradoxical Inflammatory Response

Temporary Skin Irritation

Mild Peeling

Contact Dermatitis

Skin Sensitization from Fragmented Peptide

Research Status

Safety& evidence

FDA Status

Research compound

Safety Overview

Palmitoyl tetrapeptide-7 (Eyeliss) shows excellent safety for periocular use with minimal irritation potential (Draize score <0.5 at 2% concentration). No serious adverse events in cosmetic formulations used for 15+ years. Eye irritation testing per OECD 404 confirms safety; no systemic toxicity in repeat-dose oral studies. Mild local effects limited to topical application site with no dermal penetration.

Contraindications

xKnown hypersensitivity to palmitoyl tetrapeptide-7 or formulation excipients

xActive skin infections at the application site

xSeverely compromised skin barrier with active inflammation requiring medical intervention

xNo known systemic contraindications at cosmetic concentrations

Palmitoyl tripeptide-1 demonstrates excellent cosmetic safety with GRAS/safe-for-use designation in topical formulations at concentrations up to 2%. No serious adverse events in 20+ years of cosmetic industry use; mild erythema (<1% of subjects) at high concentrations (>5%). Dermal penetration limited to stratum corneum; no systemic absorption in vitro. Compatible with common skincare ingredients.

xKnown hypersensitivity to palmitoyl tripeptide-1 or related peptide ingredients

xActive skin infections or severely compromised skin barrier at application site

xOpen wounds or actively inflamed dermatitis in treatment area

xNo known systemic contraindications for topical cosmetic use

Decision Guide

Which isright for you?

Choose Palmitoyl Tetrapeptide-7 if...

Individuals with aging skin showing signs of chronic low-grade inflammation

Those seeking to reduce UV-damage-related skin aging (photoaging)

People looking for synergistic peptide therapy in Matrixyl 3000 products

Individuals with sensitive or reactive skin benefiting from anti-inflammatory peptides

Choose Palmitoyl Tripeptide-1 if...

Individuals seeking comprehensive collagen stimulation through topical skincare

Those with aging skin showing loss of firmness, elasticity, and density

People looking for non-invasive alternatives to injectable collagen treatments

Those seeking GHK-based skin benefits without copper peptide formulation complexity