Palmitoyl Oligopeptide vs Palmitoyl Pentapeptide-4 (Matrixyl)
Elastin-derived signal peptide that stimulates dermal matrix renewal and skin elasticity through matrikine signaling.
Collagen-boosting signal peptide clinically proven to reduce wrinkles and fine lines in photoaged skin.
Written by Michael Carroll — Owner, Director of Research · Reviewed by the Peptide Initiative Research Team · Editorial standards
Quick comparison
Dose range
Palmitoyl Oligopeptide
0.002–0.002 %
Palmitoyl Pentapeptide-4 (Matrixyl)
0.012–0.012 %
Frequency
Palmitoyl Oligopeptide
Once daily
Palmitoyl Pentapeptide-4 (Matrixyl)
Once daily
Administration
Palmitoyl Oligopeptide
Topical
Palmitoyl Pentapeptide-4 (Matrixyl)
Topical
Cycle length
Palmitoyl Oligopeptide
Ongoing/indefinite
Palmitoyl Pentapeptide-4 (Matrixyl)
Ongoing/indefinite
Onset speed
Palmitoyl Oligopeptide
Moderate (1-2 weeks)
Palmitoyl Pentapeptide-4 (Matrixyl)
Moderate (1-2 weeks)
Evidence level
Palmitoyl Oligopeptide
Limited human trials
Palmitoyl Pentapeptide-4 (Matrixyl)
Limited human trials
Benefit ratings
Collagen Stimulation
Skin Elasticity
Skin Hydration
Anti-Wrinkle
Collagen Production
Skin Rejuvenation
Compound specifications
Palmitoyl Oligopeptide
Molecular formula
C36H63N5O7 (hexapeptide-12 variant)
Molecular weight
694.9 Da (approximate for palmitoylated hexapeptide)
Half-life
Topical application; degradation rate dependent on formulation pH and temperature
Bioavailability
Enhanced dermal penetration via palmitate conjugation; self-assembles with endogenous skin proteins
CAS number
171263-26-6
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
Dosing compared
Palmitoyl Oligopeptide
Topical
Under 10 ppm (<0.001%) in finished product
Once or twice daily · Ongoing
In cosmetics the INCI name Palmitoyl Oligopeptide most often refers to Pal-GHK as used in the Matrixyl 3000 blend; customary leave-on use is below 10 ppm of active peptide [6].
Up to ~0.002% in finished product
Several times daily · Ongoing
Upper end of reported leave-on concentrations, applied as often as several times daily in surveyed products [6]. Active peptide content remains in the ppm range even at this level.
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.
Best suited for
Palmitoyl Oligopeptide
Individuals seeking collagen and elastin stimulation through topical peptides
Palmitoyl Oligopeptide is particularly well-suited for individuals focused on individuals seeking collagen and elastin stimulation through topical peptides. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Those with age-related loss of skin firmness and elasticity
Palmitoyl Oligopeptide is particularly well-suited for individuals focused on those with age-related loss of skin firmness and elasticity. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
People looking for gentle anti-aging actives suitable for sensitive skin
Palmitoyl Oligopeptide is particularly well-suited for individuals focused on people looking for gentle anti-aging actives suitable for sensitive skin. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
Users wanting to complement retinoid or vitamin C regimens with peptide support
Palmitoyl Oligopeptide is particularly well-suited for individuals focused on users wanting to complement retinoid or vitamin c regimens with peptide support. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.
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.
Side effects
Palmitoyl Oligopeptide
Common
- Transient Dryness
- Mild Tingling
- Product Interaction Sensitivity
- Minimal Erythema
Uncommon
- Contact Dermatitis
Serious
- Allergic Reaction
- Comedogenic Potential from Palmitic Acid
Palmitoyl Pentapeptide-4 (Matrixyl)
Common
- Mild Tingling
- Transient Redness
- Dryness with Exfoliants
- Mild Irritation
Uncommon
- Contact Dermatitis
Serious
- Excessive Collagen Synthesis and Scar Risk
Safety & evidence
Palmitoyl Oligopeptide
Evidence level
Limited human trials
FDA status
Research compound
Safety overview
Palmitoyl oligopeptide has GRAS-equivalent status for cosmetic use with no serious adverse events in safety testing up to 5% w/w in topical formulations. Mild skin irritation reported in <3% of subjects at high concentrations (irritation index 0-1 on 0-10 scale). No dermal penetration beyond stratum corneum in Franz diffusion cell studies. Long-term use data spans 15+ years of cosmetic industry application with no systemic toxicity.
Contraindications
- Known allergy or hypersensitivity to palmitoylated peptides or formulation excipients
- Active skin infections or open wounds at the application site
- Concurrent use with strong oxidizing agents that may degrade peptide structure
- Severe dermatitis or eczema flares at intended application areas
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
Which is right for you?
Choose Palmitoyl Oligopeptide if...
- Individuals seeking collagen and elastin stimulation through topical peptides
- Those with age-related loss of skin firmness and elasticity
- People looking for gentle anti-aging actives suitable for sensitive skin
- Users wanting to complement retinoid or vitamin C regimens with peptide support
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