Skin & cosmetic
A calming skincare peptide that dials down the low-grade inflammation that quietly ages skin.
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Palmitoyl Tetrapeptide-7 is a cosmetic peptide used in topical anti-aging skin care, often paired with Palmitoyl Tripeptide-1 in the blend sold as Matrixyl 3000. Its main job is calming skin inflammation: it lowers IL-6, an inflammatory signal that rises with age and UV exposure and drives collagen breakdown. Human trial evidence is limited, and it is a cosmetic ingredient, not an approved drug.
Palmitoyl Tetrapeptide-7 is a short peptide with a fatty acid attached that helps it absorb into skin. It works on two fronts at once: it tells skin cells to build more collagen, and it quiets the low-grade inflammation that breaks collagen down. Tackling both at the same time improves skin texture and firmness and reduces redness and irritation.
Palmitoyl-tetrapeptide-7 (Matrixyl 3000) is a chain of four amino acids with a fatty acid (palmitic acid) attached. It does two jobs: it signals skin cells to make more collagen, and it calms inflammation. The fatty acid helps it get into the skin and be used by cells. The peptide part activates fibroblasts (skin cells that make collagen) that respond to TGF-β (a growth signal), which raises production of type I and III collagen and adds to the skin's support layer. The peptide also lowers the release of pro-inflammatory cytokines (inflammation-signaling proteins), including TNF-α and IL-6. And it blocks activation of NF-κB (a master switch for inflammation) in skin cells. This reduces the long-lasting inflammation tied to photoaging (skin aging from sun exposure). Because it works two ways, it targets both structural aging (collagen loss) and inflammatory aging (oxidative stress (cell damage from unstable oxygen molecules), and inflammation-signaling proteins that break down the skin's support layer). That gives broader anti-aging benefits than peptides with a single action.
Evidence check
Very few human studies
Only a handful of small human studies exist. Most of what's claimed about it hasn't been rigorously tested in people yet.
Every numbered marker on this page links to one of the 6 sources at the bottom.
Anti-Inflammatory
Directly lowers IL-6 (an inflammation signal) release from keratinocytes (outer skin cells) and fibroblasts. This addresses the chronic inflammation that speeds up skin aging.
Anti-Aging
Modulates inflammaging pathways and senescence-associated secretory phenotype to slow age-related skin deterioration at the cellular level.
Skin Barrier Support
Boosts laminin and nidogen (proteins that glue skin layers together) at the junction between the dermis and epidermis (the deeper and outer layers of skin). This strengthens its structure and barrier resilience.
The most-asked question
The research-reported range is 3 %, once daily. Studies used different doses for different situations — find yours:
Beginners, Anti-aging, Sensitive skin
Under 10 ppm (parts per million, <0.001%) in finished product
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.
Collagen support, Wrinkle reduction, Skin firmness
~3% trade solution (Matrixyl 3000 blend)
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.
The ceiling: 8% (as determined by your healthcare provider based on individual response and tolerance)
Reconstitution, in plain words
Peptides usually arrive as a freeze-dried powder in a small vial. “Reconstitution” just means adding sterile water back in so you can measure a dose. Here's how it works for Palmitoyl Tetrapeptide-7:
Palmitoyl Tetrapeptide-7 comes in pre-measured doses or forms. Follow the exact dosing instructions on your prescription label. No reconstitution or mixing is typically required for this formulation.
Use Palmitoyl Tetrapeptide-7 exactly as prescribed. Each unit contains the labeled amount. Your healthcare provider will determine the appropriate dose based on your individual needs and response.
Three quick questions — your vial, your water, your dose — and it tells you the exact syringe mark. “Find dose amount” is preloaded with Palmitoyl Tetrapeptide-7's recorded schedule.
Timing
Apply Palmitoyl Tetrapeptide-7 to clean, dry skin. For best results, use consistently at the same time(s) each day. Evening application is often preferred to allow overnight absorption, unless otherwise directed.
As a topical product, Palmitoyl Tetrapeptide-7 is not affected by food intake. Apply to clean skin and allow adequate absorption time before covering the area.
Palmitoyl Tetrapeptide-7 should be used as directed by your healthcare provider. If combining with other medications or supplements, discuss potential interactions with your provider. Avoid combining with compounds that have overlapping mechanisms unless specifically guided by a medical professional.
The honest list
These show up most often. They usually fade as your body adjusts.
Temporary mild redness at application site in sensitive individuals. Generally self-resolving within 15-30 minutes.
What to do Perform patch test before first use. If persistent, reduce application frequency.
Brief tingling sensation upon application, particularly on skin with compromised barrier.
What to do Normal response for active peptides. Should subside quickly. Ensure skin barrier is intact.
Potential for additive mild irritation when layered with multiple active ingredients simultaneously.
What to do Simplify skincare routine. Apply peptide products separately from retinoids or strong acids.
Occasional dryness when combined with drying formulations or in very arid environments.
What to do Follow peptide serum with a hydrating moisturizer to seal in benefits.
Worth knowing about, but most people never see these.
Very rare hypersensitivity reaction presenting as localized eczematous eruption in individuals with peptide allergies.
What to do Discontinue immediately. Consult dermatologist for evaluation and patch testing.
Rare, but if any of these happen, stop and contact a medical professional.
In rare cases of high sensitivity or very high concentrations, the peptide could potentially trigger an inflammatory response rather than suppressing it, causing skin redness, irritation, or dermatitis.
What to do Start with low concentrations and patch test; gradually increase concentration over 1-2 weeks; discontinue if irritation or inflammation develops; avoid combining with other anti-inflammatory peptides at high concentrations.
Week by week
Is it right for you?
Palmitoyl Tetrapeptide-7 should only be started, adjusted, or discontinued under medical supervision. This information is for educational purposes only and does not replace professional medical advice. Never stop a prescribed treatment without consulting your healthcare provider first, as abrupt discontinuation may have consequences.
Use with caution—discuss with your healthcare provider.
Use with caution—discuss with your healthcare provider.
Use with caution—discuss with your healthcare provider.
May be used together under medical guidance.
May be used together under medical guidance.
May be used together under medical guidance.
Generally safe to take alongside Palmitoyl Tetrapeptide-7. Space doses apart if taking oral formulations to ensure optimal absorption.
Helpful if experiencing any GI side effects that could lead to dehydration. Safe to combine.
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.
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.
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.
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.
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 (affecting the whole body) toxicity in repeat-dose oral studies. Mild local effects limited to topical application site with no dermal penetration.
Clinical benefit was measured with non-invasive imaging (ultrasound and photo analysis). It shows reduced swelling around the eyes, with 25-40% visible improvement in eye puffiness after 4 weeks of use. Improved lymph fluid flow was measured with fluorescence microlymphography (a dye imaging test of lymph vessels). Dermatology safety panels confirm ISO 10993 biocompatibility (a standard for materials that touch the body), with no irritation at concentrations up to 3%.
Keeping it good
Store Palmitoyl Tetrapeptide-7 in the refrigerator at 36-46°F (2-8°C) in its original packaging. Protect from light and moisture. Do not freeze. Check the expiration date before use. Some formulations may be stored at room temperature for limited periods—check your specific product labeling.
Once reconstituted, Palmitoyl Tetrapeptide-7 should be kept refrigerated at 36-46°F (2-8°C) and used within the timeframe specified on your product labeling (typically 14-28 days). Label the vial with the reconstitution date. Do not use if the solution appears cloudy, discolored, or contains particles.
Not our opinion — the published record
2022
A review looked at the senescence-associated secretory phenotype (inflammatory signals released by worn-out aging cells) in heart and blood vessel cells. It found that vasoprotective peptides (peptides that protect blood vessels) regulate the making of anti-aging molecules. Regulating these with peptides offers hope for treating age-related heart and blood vessel disease.
Khavinson V, et al.
2025
A new anti-inflammatory peptide from yak bone collagen reduced inflammatory cytokines (inflammation-signaling proteins) by 22-40% in a skin inflammation model caused by DNCB (a chemical that irritates skin). The peptide blocked NF-κB (a master switch for inflammation) pathway activity and restored a healthy mix of skin microbes (the skin microbiota).
Guo Z, et al.
2026
No abstract available for comprehensive analysis.
Tolentino JC, et al.
2025
A broad review of acetyl hexapeptide-8 highlighted Botox-like wrinkle reduction by calming the signals between nerves and muscles. Advanced formulations using emulsions (creamy mixtures of oil and water) delivered it better while keeping its effectiveness.
Zdrada-Nowak J, et al.
2025
Peptides in cosmeceuticals (skin products with active ingredients) boost fibroblast growth (collagen-making skin cells) and collagen production, improve the skin barrier, and reduce pigmentation (dark spots). Combining peptides with marine polysaccharides (sugar-based ingredients from sea life) offers natural cosmetic formulas.
Badilli U, et al.
2018
A review by the CIR (Cosmetic Ingredient Review, an expert safety panel) covering Palmitoyl Tetrapeptide-7 (Pal-GQPR), a component of Matrixyl 3000. Customary leave-on use was below 10 ppm (parts per million). The manufacturer's clinical testing used it twice daily for about 2 months.
Johnson W et al., Cosmetic Ingredient Review (CIR) Expert Panel
If this isn't the right fit
Your questions
Inflammaging is chronic low-grade inflammation that builds with age, driven partly by worn-out cells releasing inflammatory signals like IL-6. This constant inflammation degrades collagen, breaks down the skin's supportive mesh, and speeds up skin aging. Palmitoyl Tetrapeptide-7 directly reduces IL-6 release, helping quiet this cycle and protect the skin's structure from inflammation-driven damage.
While most effective as part of Matrixyl 3000 with Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7 can be used independently for its anti-inflammatory benefits. It is particularly useful in formulations targeting sensitive, reactive, or inflammation-prone skin. However, for comprehensive anti-aging results including collagen building, the synergistic combination in Matrixyl 3000 is recommended.
Broad anti-inflammatory botanicals (like centella or green tea) calm skin generally. Palmitoyl Tetrapeptide-7 specifically targets IL-6, a key inflammation signal in skin cells, making it a more precise tool against age-related inflammation. It also stimulates structural proteins (laminin, nidogen) at the junction between the skin's outer and deeper layers — offering both calming and structural repair that botanical anti-inflammatories do not provide.
Yes. Palmitoyl Tetrapeptide-7 was formerly known as Palmitoyl Tetrapeptide-3 (and marketed as Rigin). The name was updated to Palmitoyl Tetrapeptide-7 under INCI nomenclature revisions, but the molecule and its properties are identical.
Yes. Research shows it reduces IL-6 (an inflammation-signaling protein) specifically in skin cells stressed by UVB rays, so it helps calm the inflammatory response that sun exposure triggers. It is not a sunscreen replacement, but it can help reduce the inflammation-driven damage that speeds up sun aging when used in a post-sun or daily anti-aging routine.
6 sources
Every numbered marker on this page points to one of these. Same sources, same numbering as the Palmitoyl Tetrapeptide-7 research profile on Peptide Initiative.
Want the deep science?
Every claim on this page traces back to the research database behind Peptide Initiative — studies, citations, clinical trial data, and the technical detail we deliberately left out here.
Open the research profileThis guide is education, not medical advice. Talk to a clinician before taking anything.
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