Palmitoyl Pentapeptide-4 (Matrixyl) vs Palmitoyl Tripeptide-1
Collagen-boosting signal peptide clinically proven to reduce wrinkles and fine lines in photoaged skin.
Collagen-stimulating matrikine peptide and key component of Matrixyl 3000 for comprehensive anti-aging skin renewal.
Written by Michael Carroll — Owner, Director of Research · Reviewed by the Peptide Initiative Research Team · Editorial standards
Quick comparison
Dose range
Palmitoyl Pentapeptide-4 (Matrixyl)
0.012–0.012 %
Palmitoyl Tripeptide-1
0.002–0.002 %
Frequency
Palmitoyl Pentapeptide-4 (Matrixyl)
Once daily
Palmitoyl Tripeptide-1
Once daily
Administration
Palmitoyl Pentapeptide-4 (Matrixyl)
Topical
Palmitoyl Tripeptide-1
Topical
Cycle length
Palmitoyl Pentapeptide-4 (Matrixyl)
Ongoing/indefinite
Palmitoyl Tripeptide-1
Ongoing/indefinite
Onset speed
Palmitoyl Pentapeptide-4 (Matrixyl)
Moderate (1-2 weeks)
Palmitoyl Tripeptide-1
Moderate (1-2 weeks)
Evidence level
Palmitoyl Pentapeptide-4 (Matrixyl)
Limited human trials
Palmitoyl Tripeptide-1
Limited human trials
Benefit ratings
Anti-Wrinkle
Collagen Production
Skin Rejuvenation
Anti-Aging
Skin Firmness
Compound specifications
Palmitoyl Pentapeptide-4 (Matrixyl)
Molecular formula
C39H75N7O10
Molecular weight
802.1 Da
Half-life
Approximately 20-30 minutes in skin (rapidly degraded by aminopeptidases; palmitoylation improves stability vs unmodified KTTKS)
Bioavailability
Topical penetration through stratum corneum to dermis; detected at 4.2 µg/cm² in SC, 2.8 µg/cm² in epidermis, 0.3 µg/cm² in dermis
CAS number
214047-00-4
Palmitoyl Tripeptide-1
Molecular formula
C30H54N6O5
Molecular weight
578.8 Da
Half-life
Limited data; peptide is susceptible to enzymatic degradation in skin but palmitoylation improves stability compared to unmodified GHK
Bioavailability
Enhanced topical penetration via palmitoyl lipid modification; reaches dermis where fibroblasts reside
CAS number
147732-56-7
Dosing compared
Palmitoyl Pentapeptide-4 (Matrixyl)
Topical
3 ppm (0.0003%) active peptide
Twice daily · 12 weeks
The dose with proven clinical results: a randomized controlled trial (n=93) showed visible improvement in photoaged facial skin at 3 ppm of active Pal-KTTKS applied twice daily over 12 weeks [1]. This is the active-peptide concentration, not the trade solution.
Up to 0.012% in finished product
Twice daily · Ongoing
Typical concentration range found in commercial leave-on anti-aging products, considered safe for cosmetic use by industry review [6]. Higher than the minimum clinical dose but well within the safety-assessed range.
Palmitoyl Tripeptide-1
Topical
Under 10 ppm (<0.001%) in finished product
Once or twice daily · Ongoing
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
Once or twice daily · Ongoing
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.
Best suited for
Palmitoyl Pentapeptide-4 (Matrixyl)
Individuals seeking non-invasive anti-wrinkle treatment
Palmitoyl Pentapeptide-4 (Matrixyl) is particularly well-suited for individuals focused on individuals seeking non-invasive anti-wrinkle treatment. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Those with photoaged skin showing fine lines and loss of firmness
Palmitoyl Pentapeptide-4 (Matrixyl) is particularly well-suited for individuals focused on those with photoaged skin showing fine lines and loss of firmness. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
People looking to boost collagen production through topical skincare
Palmitoyl Pentapeptide-4 (Matrixyl) is particularly well-suited for individuals focused on people looking to boost collagen production through topical skincare. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Sensitive skin types seeking well-tolerated anti-aging actives
Palmitoyl Pentapeptide-4 (Matrixyl) is particularly well-suited for individuals focused on sensitive skin types seeking well-tolerated anti-aging actives. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Palmitoyl Tripeptide-1
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.
Side effects
Palmitoyl Pentapeptide-4 (Matrixyl)
Common
- Mild Tingling
- Transient Redness
- Dryness with Exfoliants
- Mild Irritation
Uncommon
- Contact Dermatitis
Serious
- Excessive Collagen Synthesis and Scar Risk
Palmitoyl Tripeptide-1
Common
- Temporary Skin Irritation
- Mild Redness
- Dryness
- Mild Peeling
Uncommon
- Contact Dermatitis
Serious
- Skin Sensitization from Fragmented Peptide
Safety & evidence
Palmitoyl Pentapeptide-4 (Matrixyl)
Evidence level
Limited human trials
FDA status
Research compound
Safety overview
Palmitoyl pentapeptide-4 (Matrixyl) demonstrates excellent dermatological safety with GRAS/safe-for-cosmetic status; extensively used in anti-aging skincare for 20+ years with no serious adverse events. Skin irritation potential is minimal at recommended 2-3% concentrations (irritation index <0.5). No systemic absorption via intact skin; confined to epidermis/dermis per Franz diffusion cell studies. Stability in formulations verified through HPLC analysis.
Contraindications
- Known hypersensitivity to palmitoyl pentapeptide-4 or formulation excipients
- Active skin infections at the application site
- Severely compromised skin barrier with open wounds
- No known systemic contraindications at cosmetic concentrations
Palmitoyl Tripeptide-1
Evidence level
Limited human trials
FDA status
Research compound
Safety overview
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.
Contraindications
- Known hypersensitivity to palmitoyl tripeptide-1 or related peptide ingredients
- Active skin infections or severely compromised skin barrier at application site
- Open wounds or actively inflamed dermatitis in treatment area
- No known systemic contraindications for topical cosmetic use
Which is right for you?
Choose Palmitoyl Pentapeptide-4 (Matrixyl) if...
- Individuals seeking non-invasive anti-wrinkle treatment
- Those with photoaged skin showing fine lines and loss of firmness
- People looking to boost collagen production through topical skincare
- Sensitive skin types seeking well-tolerated anti-aging actives
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