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Pentapeptide-1 (CAS:69558-55-0) Anti-Aging Peptide
PRODUCT PARAMETERS
Pentapeptide-1
CAS:69558-55-0
Anti-Aging/ Soothing and Anti-Inflammatory/ Sensitive Skin Care
Pentapeptide-1 (Thymopentin, CAS 69558-55-0): immunomodulatory peptide. Reduces IL-8 & MMP-9, boosts collagen, enhances barrier. Anti‑inflammatory, anti‑aging.
Description
Pentapeptide-1 Basic Information
| Field Name | Basic information |
| INCI Name | Pentapeptide-1 |
| CAS No. | 69558-55-0 |
| Synonyms | Thymopentin;Thymopoietin pentapeptide;TP-5; Arg-Lys-Asp-Val-Tyr (R-K-D-V-Y) |
| Key Benefits | Anti-Aging/ Soothing and Anti-Inflammatory/ Sensitive Skin Care |
Pentapeptide-1 Powder Specification
| Field Name | Basic information |
| Form | Powder |
| Appearance | White to off-white powder |
| Purity (HPLC) | ≥ 95%, or ≥ 98% |
| Storage Conditions | Store sealed, protected from light and moisture. Long-term storage at -20°C is recommended. |
| Packaging | Glass/plastic sample bottles, or customized packages based on special requests. |
| Shipping | Express air freight with moisture-proof protection. |
| Inquiry | [Request a Quote / Order Samples] |
Pentapeptide-1 Solution Specification
| Field Name | Basic information |
| Form | Liquid |
| Appearance | Clear Transparent Liquid |
| Peptide Content | 1000 ppm, 500 ppm (Customizable upon request) |
| Storage Conditions | Can transport at room temperature. Store in a dry, dark place at 2-8°C for long term storage. |
| Packaging | 1Kg or 5kg, or customized packages based on special requests. |
| Shipping | Express air freight with moisture-proof protection. |
| Sample | Request a Quote / Order Samples |
Pentapeptide-1 (Thymopentin, CAS 69558-55-0): immunomodulatory peptide. Reduces IL-8 & MMP-9, boosts collagen, enhances barrier. Anti‑inflammatory, anti‑aging.

Advantage and Benefit
| Feature | Details |
| IL‑8 Suppression | Decreases secretion of pro‑inflammatory cytokine IL‑8 in keratinocytes, effectively reducing redness, stinging, and irritation in sensitive and reactive skin. |
| Collagen & Elastin Synthesis | Stimulates dermal fibroblasts to produce collagen and elastin, improving skin thickness, firmness, and elasticity for anti‑aging benefits. |
| Skin Barrier Enhancement | Works synergistically with other oligopeptides to promote barrier‑related gene expression, strengthening the skin‘s defense against environmental stressors and microbes. |
| T‑Cell Modulation | Modulates helper T‑cell activity and reduces IL‑17 expression, helping regulate skin microflora and control chronic inflammation in conditions like psoriasis. |
FAQs
Q1:How does Pentapeptide-1 deliver anti-aging benefits for facial skin?
A: Pentapeptide-1 (sh-Pentapeptide-1, CAS 69558-55-0, sequence RKDVY) is a biomimetic signal peptide. As a fragment of the human hormone thymopoietin, it activates the skin‘s natural renewal processes. It works by stimulating dermal fibroblasts to synthesize type I/III collagen and elastin, which improves skin thickness, firmness, and elasticity. This targeted extracellular matrix remodeling reduces fine lines and wrinkles for a more youthful appearance. (Source: UL Prospector; CI.GUIDE)
Q2:How does Pentapeptide-1 promote collagen synthesis and support skin renewal?
A: Pentapeptide-1 is a biomimetic signal peptide derived from thymopoietin (sequence RKDVY). It activates dermal fibroblasts via the TGF-β pathway, upregulating the synthesis of type I/III collagen, fibronectin, and glycosaminoglycans, thereby improving skin thickness, firmness, and elasticity. By mimicking natural repair signals, it accelerates skin renewal and reduces the appearance of fine lines and wrinkles (Source: UL Prospector; CI.GUIDE).
Q3:What is the mechanism by which Pentapeptide-1 repairs the skin barrier and reduces inflammation?
A: Pentapeptide-1 enhances skin barrier function by stimulating the synthesis of barrier proteins such as filaggrin, involucrin, and loricrin, accelerating lamellar body secretion and lipid reorganization. At the same time, it reduces inflammation by inhibiting the release of pro-inflammatory cytokines IL-6 and TNF-α and decreasing IL-17 expression. This dual action significantly reduces TEWL, strengthens barrier integrity, and calms sensitive skin (Source: SciPeptide; BenchChem; CI.GUIDE).
Q4:How does Pentapeptide-1 regulate skin immune responses and manage sensitive skin conditions?
A: Pentapeptide-1 is the active fragment of thymopoietin (a human hormone with immunomodulating properties). It regulates skin microflora, reduces IL-17 expression, and controls helper T‑cell subsets (CD4⁺, Th17). In a 2024 animal study, topical thymopentin reduced epidermal thickness, inflammatory cell infiltration, and NF‑κB pathway expression while modulating skin microbiota (PMID: 38984208). These mechanisms make it effective for atopic dermatitis, contact dermatitis, psoriasis, and chronically sensitive skin (Source: CI.GUIDE; AusHealthIngredients).
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