Palmitoyl Tetrapeptide-7 vs Snap-8
Anti-inflammatory matrikine peptide that reduces IL-6-driven inflammaging for calmer, more youthful skin.
An advanced 8-amino-acid peptide that relaxes facial muscles from the outside in—think of it as 'Botox in a bottle' that you apply to your skin to smooth expression lines without needles or injections.
Written by Michael Carroll — Owner, Director of Research · Reviewed by the Peptide Initiative Research Team · Editorial standards
Quick comparison
Dose range
Palmitoyl Tetrapeptide-7
3–3 %
Snap-8
10–10 %
Frequency
Palmitoyl Tetrapeptide-7
Once daily
Snap-8
Once daily
Administration
Palmitoyl Tetrapeptide-7
Topical
Snap-8
Topical application
Cycle length
Palmitoyl Tetrapeptide-7
Ongoing/indefinite
Snap-8
Ongoing/indefinite
Onset speed
Palmitoyl Tetrapeptide-7
Moderate (1-2 weeks)
Snap-8
Moderate (1-2 weeks)
Evidence level
Palmitoyl Tetrapeptide-7
Limited human trials
Snap-8
Moderate human trials (Phase 1-2)
Benefit ratings
Anti-Inflammatory
Anti-Aging
Skin Barrier Support
Wrinkle Reduction
Muscle Relaxation
Skin Smoothing
Compound specifications
Palmitoyl Tetrapeptide-7
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
Snap-8
Molecular formula
C41H70N16O16S
Molecular weight
1075.16 g/mol
Half-life
Topical activity persists 12-24 hours on skin
Bioavailability
Penetrates stratum corneum; reaches viable epidermis with appropriate formulation
CAS number
868844-74-0
Dosing compared
Palmitoyl Tetrapeptide-7
Topical
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.
~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.
Snap-8
Topical
3-5% of supplied peptide solution in formulation
Once to twice daily · 4 weeks initial trial
Source class: manufacturer recommendation, not peer-reviewed clinical data. Lipotec/Lubrizol recommends 3-10% of supplied peptide solution in formulations [1][2]. No peer-reviewed study has tested any specific concentration of Snap-8 alone in a topical formulation.
10% of supplied peptide solution in formulation
Twice daily · Ongoing use
Source class: manufacturer recommendation, not peer-reviewed clinical data. Lipotec/Lubrizol recommends up to 10% concentration [1][2]. The wrinkle-reduction percentages attributed to this concentration (such as 63%) originate from manufacturer datasheets, not peer-reviewed publications, and have not been independently verified.
Best suited for
Palmitoyl Tetrapeptide-7
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.
Snap-8
Expression Line Fighters
If you've noticed those lines that form when you smile, frown, or squint are starting to stick around even when your face is relaxed, Snap-8 is designed exactly for this. It works on the muscle-skin connection that creates these dynamic wrinkles.
Botox-Curious but Needle-Shy
Love the idea of smoother skin but not ready for injections? Snap-8 offers a topical alternative that works through a similar mechanism as Botox—just gentler and without the commitment. Perfect for testing the waters of muscle-relaxing anti-aging.
Prevention-Focused Millennials
Starting in your late 20s or early 30s with preventive skincare? Snap-8 can help keep expression lines from becoming permanent fixtures by calming the repetitive muscle movements that eventually etch wrinkles into your skin.
Sensitive Skin Types
Unlike some anti-aging actives that can be harsh, Snap-8 is remarkably well-tolerated. If retinoids make your skin angry or acids cause irritation, peptides like Snap-8 offer effective anti-aging without the drama.
Side effects
Palmitoyl Tetrapeptide-7
Common
- Mild Redness
- Slight Tingling
- Mild Irritation with Other Actives
- Dryness
Uncommon
- Allergic Contact Dermatitis
Serious
- Paradoxical Inflammatory Response
Snap-8
Common
- Mild tingling sensation
- Temporary redness
- Skin dryness
Uncommon
- Contact irritation
- Skin tightness
Serious
- Allergic reaction
Safety & evidence
Palmitoyl Tetrapeptide-7
Evidence level
Limited human trials
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
- Known hypersensitivity to palmitoyl tetrapeptide-7 or formulation excipients
- Active skin infections at the application site
- Severely compromised skin barrier with active inflammation requiring medical intervention
- No known systemic contraindications at cosmetic concentrations
Snap-8
Evidence level
Moderate human trials (Phase 1-2)
FDA status
Not FDA approved
Safety overview
No peer-reviewed study has tested Snap-8 (acetyl octapeptide-3) alone for safety or efficacy. The compound has been included in two published multi-component microneedle patch studies, both of which combined it with several other active ingredients. Avcil et al. (2020) tested a hyaluronic acid microneedle patch loaded with acetyl octapeptide-3 plus palmitoyl tripeptide-5, adenosine, and seaweed extracts in a 12-week monocentric trial on the eye area. None of the subjects reported any primary or cumulative skin reactions [1]. Shin et al. (2024) tested a dissolving microneedle patch containing acetyl octapeptide-3, L-ascorbic acid 2-glucoside, and sodium cyclic lysophosphatidic acid in 24 subjects over 28 days (patch vs placebo on opposite eyes). No adverse effects were reported [2]. In both studies, multiple active ingredients were present — adverse effects cannot be attributed to or excluded from Snap-8 specifically. An FDA in vitro study of the related compound acetyl hexapeptide-8 (Argireline, 6 amino acids vs Snap-8's 8) found that the peptide remains mostly in the stratum corneum (0.22% of applied dose in human skin) with none reaching the dermis, supporting low systemic exposure for topical SNARE-interfering peptides [4].
Contraindications
- Known allergy to peptide ingredients
- Active skin infections at application site
- Open wounds or severe skin irritation
- Pregnancy (as a precaution due to limited data)
Which is right 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 Snap-8 if...
- Wrinkle reduction
- Expression line smoothing
- Preventive anti-aging
- Non-invasive cosmetic enhancement