Palmitoyl tripeptide 5 in skin care (CAS: 623172-56-5), as the earliest and most widely used signal based beauty peptide, activates the transforming growth factor - β (TGF - β) pathway by mimicking platelet reactive protein-1 (TSP-1), achieving a dual channel anti-aging mechanism of "promoting synthesis+inhibiting degradation". It is a systemic skin rejuvenation factor with the TGF - β pathway as its core, collagen synthesis as its main focus, MMP inhibition as its defense line, antioxidant and whitening as its wings, and anti-inflammatory and repair as its depth. From type I, III, IV collagen to elastin, hyaluronic acid, glycosaminoglycans, fibronectin, from tyrosinase inhibition to free radical scavenging, from facial wrinkle resistance to intimate tightening


Palmitoyl Tripeptide-5 COA
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| Certificate of Analysis | ||
| Compound name | Palmitoyl Tripeptide-5 | |
| Grade | Pharmaceutical grade | |
| CAS No. | 623172-56-5 | |
| Quantity | 80g | |
| Packaging standard | PE bag+Al foil bag | |
| Manufacturer | Shaanxi BLOOM TECH Co., Ltd | |
| Lot No. | 202601090067 | |
| MFG | Jan 9th 2026 | |
| EXP | Jan 8th 2029 | |
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| Item | Enterprise standard | Analysis result |
| Appearance | White or almost white powder | Conformed |
| Water content | ≤5.0% | 0.58% |
| Loss on drying | ≤1.0% | 0.49% |
| Heavy Metals | Pb≤0.5ppm | N.D. |
| As≤0.5ppm | N.D. | |
| Hg≤0.5ppm | N.D. | |
| Cd≤0.5ppm | N.D. | |
| Purity (HPLC) | ≥99.0% | 99.98% |
| Single impurity | <0.8% | 0.68% |
| Total microbial count | ≤750cfu/g | 140 |
| E. Coli | ≤2MPN/g | N.D. |
| Salmonella | N.D. | N.D. |
| Ethanol (by GC) | ≤5000ppm | 400ppm |
| Storage | Store in a sealed, dark, and dry place below 2-8°C | |
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| Chemical Formula: | C35H66F3N5O7 |
| Exact Mass: | 725 |
| Molecular Weight: | 726 |
| m/z: | 725 (100.0%), 726 (37.9%), 727 (4.3%), 727 (2.7%), 726 (1.8%), 727 (1.4%) |
| Elemental Analysis: | C, 57.91; H, 9.16; F, 7.85; N, 9.65; O, 15.43 |
Palmitoyl Tripeptide 5 uses
The essence of skin aging is the imbalance of extracellular matrix (ECM) - reduced collagen synthesis and accelerated degradation. Palmitoyl tripeptide 5 in skin care, also known as SYN ®- COLL,Pal-KVK, Composed of lysine valine lysine tripeptide coupled with palmitic acid, with a molecular weight of 611.92 and a molecular formula of C33H65N5O5. Its palmitoyl group endows excellent transdermal ability, while the tripeptide sequence accurately simulates TSP-1 function, releasing active TGF - β and initiating the collagen synthesis program of fibroblasts.

Activate collagen synthesis - the first engine for anti wrinkle and firming
This is the most fundamental and persuasive use.
Promoting the synthesis of type I, III, and IV collagen: Palmitoyl tripeptide-5 simulates the binding of TSP-1 to the inactive precursor of TGF - β, releasing active TGF - β and directly upregulating the gene expression of type I, III, and IV collagen in fibroblasts. In vitro skin tissue tests showed that ≥ 2.5ppm can promote type I collagen synthesis, and 5ppm has the same effect as TGF - β 1; ≥ 0.63ppm can promote the synthesis of type IV collagen and strengthen the epidermal junction layer. According to third-party human trials, continuous use for 28 days resulted in a 19.6% increase in collagen density in the dermis of the subjects and a 22.3% decrease in dynamic stripe depth.
QPCR detection confirmed that it can upregulate the expression of key factors in the TGF - β pathway, promote fibroblast activity, and increase collagen synthesis ability by 119% compared to the positive control TGF - β.
Clinical comparative data: In a controlled trial of 60 healthy volunteers, the 2.5% palmitoyl tripeptide 5 in skin care cream group was used twice a day for 84 days. The average roughness (Ra) and maximum roughness (Rz, Rt) parameters of the skin surface were significantly improved, and the effect was better than that of the higher concentration palmitoyl tripeptide-3 group. Wrinkle related parameters were significantly reduced by 12%.
Its efficacy mode is similar to vitamin A acid, but without the side effects of vitamin A acid such as peeling, redness, and photosensitivity, it is an ideal alternative for anti-aging sensitive muscles.


Inhibition of matrix metalloproteinases - the "gatekeeper" that blocks collagen degradation
Inhibition of MMP-1 and MMP-3: In vitro studies have shown that palmitoyl tripeptide-5 can interfere with collagen degradation mediated by MMP-1 and MMP-3, with an inhibition rate of 82%, preventing existing collagen from being degraded at the source.
Inhibition of MMP-2 and MMP-9: In enzymatic experiments, the effective inhibitory concentration (IC50) of MMP-2/9 is at the nanomolar (nM) level, indicating its high efficiency. Quickly reduce damage to existing type I and IV collagen, providing immediate improvement in fine lines.
Downregulation of inflammatory factors: Simultaneously inhibiting the production of interleukin-8 (IL-8) and tumor necrosis factor - α (TNF - α), protecting collagen from degradation at the inflammatory level.
The dual channel mechanism of "promoting synthesis+inhibiting degradation" makes its anti wrinkle effect far superior to that of a single supplementary ingredient.
Promoting elastin synthesis - constructing a skin elastic network
Collagen gives the skin toughness, while elastin gives the skin resilience. While promoting collagen synthesis, it significantly increases the production of elastin. The two work together to build a complete skin support network, making the skin not only "plump" but also "elastic". Research has shown that it may interact with the elastin production system, resulting in an overall effect of increasing skin moisture content, improving fine line appearance, and thickening the skin.

Promoting the synthesis of hyaluronic acid - an invisible engine for deep hydration
Can increase the synthesis of hyaluronic acid (HA) in the intercellular matrix. Hyaluronic acid is the core moisturizing molecule in the intercellular matrix, and its content directly determines the degree of skin hydration. This means that palmitoyl tripeptide-5 not only resists wrinkles, but also "stores water" internally, increases skin moisture, restores smoothness and firmness, improves skin tone, and enhances radiance and transparency.
In formula application, it is recommended to mix with hyaluronic acid: 2-10ppm palmitoyl tripeptide-5+hyaluronic acid, which can achieve a synergistic effect of "collagen regeneration+instant filling".
Promoting the synthesis of glycosaminoglycans and fibronectin - improving the extracellular matrix
It can also increase the production of glycosaminoglycans (GAGs) and fibronectin. These two types of substances are important components of the extracellular matrix, involved in cell signaling and tissue repair. May increase the generation of both, further enhancing the structural integrity of the skin and achieving comprehensive rejuvenation of the skin at the microscopic level.


Antioxidant - an elite force for clearing free radicals
The two main culprits of skin aging are collagen loss and oxidative damage. There has been sufficient evidence on the former, and it also performs excellently on the latter.
Clearing oxygen and hydroxyl radicals: Palmitoyl tripeptide 5 in skin care can promote skin cell growth and inhibit the damage of matrix proteins by oxygen and hydroxyl radicals. Laboratory studies have shown that its antioxidant capacity is 4 times that of vitamin C and 2 times that of vitamin E.
Anti UVB light damage: Master's thesis research shows that collagen peptides can improve the immune level of the body in UVB damage models, and the spleen and thymus indices significantly increase, indicating that they can not only "repair" light damage, but also "defend" light damage from the immune level.
References
References
[1] Sohu website Palmitoyl tripeptide-5 is indispensable for effective anti-aging [EB/OL]. 2022-09-16
[2] Gao Yaqian, Tang Jian, Wang Zhiyong, etc Research on the Skin Whitening Efficacy and Mechanism of Palmitoyl Tripeptide-5 [J]. Daily Chemical Industry, 2018, 48 (3): 166-171
[3] Peptide Biology [Targeted Anti Wrinkle Black Technology] Palmitoyl Tripeptide-5: Collagen Activating Device Penetrating the Keratinum Layer [EB/OL]. April 25, 2025
[4] Book118. Study on the Skin Whitening Efficacy and Mechanism of Palmitoyl Tripeptide-5 [EB/OL]. February 2, 2025
[5] Peptide Biology Palmitoyl Tripeptide-5: Analysis of Cosmetic Raw Materials and Application Prospects [EB/OL]. September 10, 2025
Frequently Asked Questions
What is palmitoyl tripeptide-5 used for?
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Palmitoyl tripeptide-5 is also used in anti-aging cosmetic products, due to its ability to reduce MMP'S and promote the synthesis of type I and type II collagen from extracellular matrix, as well as for inhibiting melanin production by reducing tyrosinase activity.
Is palmitoyl tripeptide a retinol?
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Palmitoyl Tripeptide-1 description
It's categorise as a "messenger peptide" because of its ability to "tell" skin how to look better, specifically regarding reducing signs of sun damage like wrinkles and rough texture. Some research has shown that this peptide has similar anti-ageing benefits to retinol.
Is palmitoyl tripeptide-5 natural?
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Palmitoyl Tripeptide-5 is a synthetic, patented signal peptide made from the amino acids lysine and valine combined with the fatty acid palmitic acid, which aids penetration.
What does palmitoyl tripeptide-5 do for skin?
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Palmitoyl tripeptide-5 is a potent synthetic anti-aging peptide that deeply penetrates the skin to boost collagen production, improve elasticity, and smooth fine lines. By mimicking the body's natural signaling, it helps firm the skin, reduce wrinkles, and protect existing collagen from environmental degradation.
Key Skin Benefits
Boosts Collagen Synthesis: It actively stimulates your skin's cells (fibroblasts) to produce more collagen, giving skin a fuller, more youthful bounce.
Firms and Lifts: By supporting both collagen and elastin, it tightens sagging skin and restores overall elasticity.
Reduces Wrinkles: It actively smooths both fine lines and deeper wrinkles. Clinical studies show visible improvements in wrinkle depth and texture after just 4 to 12 weeks of daily use.
Minimizes Pores: It helps refine skin texture, which can visibly reduce the appearance of enlarged pores.
Protects Skin Structure: It inhibits matrix metalloproteinases (MMPs)-enzymes that are known to break down and degrade collagen.
Enhances Hydration: It helps support the skin's extracellular matrix, promoting better moisture retention.
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