A synthetic signal peptide that mimics a fragment of collagen, designed to support the skin's collagen-related matrix renewal. Widely used in anti-aging serums and creams, Palmitoyl Tripeptide-1 is one of two core peptides in the Matrixyl 3000 complex and is valued for its potential to help maintain skin firmness and reduce the appearance of fine lines.
Palmitoyl Tripeptide-1 (INCI: Palmitoyl Tripeptide-1, CAS 147732-56-7) is a synthetic lipopeptide consisting of a palmitic acid chain attached to a three-amino-acid sequence (glycine–histidine–lysine, or GHK). This GHK fragment is a naturally occurring peptide motif found in human collagen type I. By mimicking this collagen fragment, Palmitoyl Tripeptide-1 acts as a signal peptide — it is designed to communicate with skin cells (fibroblasts) and support the renewal of collagen, fibronectin, and other extracellular matrix components. The palmitic acid modification enhances skin penetration and stability compared to the unmodified GHK tripeptide. The CIR Expert Panel has concluded that this ingredient is safe as used in cosmetics.
Palmitoyl Tripeptide-1 is most commonly encountered as part of the Matrixyl 3000 complex, a trademarked blend by Sederma that pairs it with Palmitoyl Tetrapeptide-7 (an anti-inflammatory peptide). The two peptides are designed to work through complementary pathways: Palmitoyl Tripeptide-1 is intended to support collagen-related matrix renewal while Palmitoyl Tetrapeptide-7 targets interleukin-6-mediated inflammation that contributes to skin aging. In vitro studies and small-scale human studies have shown that the GHK motif is associated with increased collagen production in fibroblast cultures and improvements in wrinkle appearance and skin thickness, though these are not large-scale, independently replicated clinical trials. The degree of clinical benefit in finished cosmetic products depends on concentration, formulation, and individual skin conditions.
This peptide is typically used at very low concentrations in cosmetic formulations — often in the parts per million (ppm) range — because peptides are designed to be active at small doses. It is found across a wide range of anti-aging products including serums, eye creams, moisturisers, and sheet masks. Our database identifies Palmitoyl Tripeptide-1 in 2,619 product variants, reflecting its widespread adoption in the cosmetics industry.
As a signal peptide mimicking a collagen fragment (GHK), Palmitoyl Tripeptide-1 is designed to support fibroblasts in collagen-related matrix renewal. In vitro and small-scale human studies suggest an association with increased collagen production, though large-scale clinical validation is limited and real-world results depend on formulation and concentration.
By supporting the skin's matrix renewal processes, this peptide may help improve the appearance of fine lines and wrinkles over time. Effects are typically gradual, becoming more noticeable with consistent use over several weeks.
Supporting collagen and fibronectin renewal may contribute to improved skin firmness and elasticity over time. This makes Palmitoyl Tripeptide-1 a common choice in formulations targeting skin laxity and loss of tone associated with aging.
The GHK peptide motif has been studied for its role in tissue remodelling and wound healing. In cosmetic applications, this translates to general skin conditioning benefits that may help maintain a smoother, more even skin texture.
Generally suitable for: Most skin types, including mature, dry, normal, combination, and sensitive skin. Peptides are typically well-tolerated, though individual results may vary depending on the overall formulation.
Based on the CIR assessment, Palmitoyl Tripeptide-1 is considered safe at current cosmetic use concentrations. It is typically used at very low concentrations (<10 ppm per CIR data), and due to these low use levels, the overall irritation and sensitisation risk is expected to be low. No allergen flags or GHS hazard classifications are recorded in our database, and it is permitted in the EU without restrictions.
Palmitoyl Tripeptide-1 is a signal peptide, not a direct structural protein. Its anti-aging effects depend on the skin's own ability to respond to the signal and produce collagen. Results vary by individual and are typically gradual rather than immediate — expect 4 to 12 weeks of consistent use before visible changes.
Some peptide formulations may have reduced stability in low-pH environments. While this is not a universally confirmed rule, it is common practice to use peptides and strong acids (such as high-concentration AHAs or L-ascorbic acid at low pH) at different times of day as a precaution.
No SCCS (Scientific Committee on Consumer Safety) opinion is available specifically for Palmitoyl Tripeptide-1. Our safety assessment relies on CIR data, EU regulatory status, and the ingredient's established use history at low concentrations.
No specific reproductive or developmental toxicity studies are publicly available for Palmitoyl Tripeptide-1. However, this peptide is used at very low concentrations (ppm range) in cosmetic products, and systemic absorption from topical application is expected to be limited. It is generally considered a lower-risk cosmetic ingredient compared to retinoids or certain chemical exfoliants. As with any cosmetic ingredient during pregnancy, consult your healthcare provider for personalised advice.
Start with a gentle cleanser to remove impurities. Clean skin allows peptides to be absorbed more effectively.
Apply your Palmitoyl Tripeptide-1 serum or cream to the face and neck. Peptide products work best on slightly damp skin. Pat gently — avoid rubbing, which can reduce absorption.
If using a peptide serum, follow with a moisturiser to lock in the active ingredients. Peptides are compatible with most moisturiser types including those containing ceramides, hyaluronic acid, or niacinamide.
Finish your morning routine with broad-spectrum SPF 30+. While Palmitoyl Tripeptide-1 is not photosensitising, daily sun protection is essential for any anti-aging regimen.
Higher active concentration, lightweight texture. Ideal for layering and targeted anti-aging treatment.
Combines peptide delivery with occlusion and hydration. Best for drier skin types or simplified routines.
Peptides are especially popular in eye-area products, where the delicate skin benefits from gentle, collagen-supporting ingredients.
HA provides deep hydration while the peptide works on collagen support. Complementary mechanisms with no known conflicts.
Niacinamide strengthens the skin barrier and reduces inflammation, creating an optimal environment for peptide activity. An excellent combination for anti-aging.
Occlusive and barrier-repair ingredients help seal in the peptide and support overall skin health. Ideal follow-up to a peptide serum.
The other half of the Matrixyl 3000 complex. Together they address collagen loss and inflammation-driven aging through complementary pathways.
Some peptide formulations may have reduced stability in low-pH environments. While this has not been universally confirmed, it is common practice to separate peptide and strong acid products (glycolic acid, lactic acid, L-ascorbic acid at low pH) by using them at different times of day.
While peptides and retinol can complement each other, retinol's irritation potential may reduce comfort for sensitive skin. If irritation occurs, alternate evenings or use the peptide in the AM and retinol in the PM.
Found in 2,619 product variants in our database. Here are some well-known options. Note: formulations may change over time — always check the current INCI list on the product packaging.
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