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Hexapeptide-9 Professional Sensitive Skin Care
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Product Description
1. Mechanism of Action (MOA)
Hexapeptide-9 is a biomimetic peptide designed to mimic the activity of Laminin, a critical glycoprotein that is a major component of the dermal-epidermal junction (DEJ) and the skin's basement membrane. Its primary mechanism is foundational and restorative:
*Laminin Mimetic & DEJ Reinforcement: The peptide sequence is derived from the active site of the Laminin α1 chain. It competitively binds to cell surface receptors (integrins), mimicking the natural signaling of Laminin.
Physiological Result: This binding promotes the adhesion of keratinocytes and fibroblasts, leading to a direct strengthening of the DEJ. A robust DEJ is essential for overall skin structural integrity, firmness, and efficient communication between the dermis and epidermis.
*Stimulation of Extracellular Matrix (ECM) Synthesis: By strengthening the foundational DEJ, it creates a favorable environment for fibroblasts to produce key structural proteins.
Physiological Result: This leads to increased synthesis of Collagen IV (a key DEJ component), Collagen I & III (dermal structural collagens), and Fibronectin, resulting in a thicker, more resilient dermis.
*Barrier Function Support: A strong DEJ is intrinsically linked to a healthy skin barrier. By reinforcing this junction, Hexapeptide-9 indirectly contributes to better barrier function, reducing transepidermal water loss (TEWL) and improving skin's resistance to environmental stressors.
2. In Vitro Efficacy Data
Cell Adhesion & DEJ Integrity: In vitro studies demonstrate that Hexapeptide-9 significantly enhances the adhesion of human keratinocytes to the basement membrane, a direct indicator of its Laminin-mimetic activity.
ECM Protein Synthesis: Data from human dermal fibroblast cultures show a marked upregulation in the production of Collagen IV (by >150%) and Collagen I (by >80%) after treatment with Hexapeptide-9, compared to untreated controls.
Gene Expression: PCR analysis confirms the upregulation of genes associated with DEJ and dermal matrix proteins, including Laminin, Collagen IV, and Collagen I.
3. Clinical Results
Human clinical studies over 4-12 weeks have demonstrated significant cosmetic benefits:
Improved Skin Firmness & Elasticity: Instrumental measurements (e.g., Cutometer) showed a significant improvement (up to 20%) in skin firmness and elasticity after 56 days of use.
Reduction in Wrinkle Depth: Silicone replicas and image analysis confirmed a visible reduction in the depth and volume of fine lines and wrinkles, particularly in the eye and cheek areas.
Enhanced Skin Barrier & Hydration: Subjects reported improved skin comfort, and TEWL measurements indicated better barrier function, leading to increased skin hydration.
Overall Skin Quality: Clinical grading revealed improvements in skin smoothness, density, and overall youthful appearance.
Safety Profile
Hexapeptide-9 is a synthetic peptide with high biocompatibility. It is non-irritating and non-sensitizing at recommended use levels, making it suitable for all skin types, including sensitive skin.
Compatibility
*Other structural peptides (e.g., Palmitoyl Tripeptide-1, Matrixyl) *Hyaluronic Acid and other humectants *Niacinamide *Ceramides and barrier-supporting lipids *Antioxidants (Vitamin C, E)
Formulation Stability
Stable in a wide pH range (4.0-8.0) and shows good thermal stability for standard manufacturing processes.
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Recommended Usage & Formulations
Recommended Concentration: 2% - 5% (of the raw peptide material).
Ideal Formulations: Due to its water-soluble nature and foundational action, it is perfectly suited for:
Anti-Aging Serums & Ampoules
Firming Creams & Lotions
Eye Contour Treatments
Barrier-Repair Creams
Pre- & Post-Procedure Skincare
Application: Ideal for daily-use, leave-on products aimed at improving skin structure, firmness, and resilience.
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Foundational Repair
Uniquely targets the dermal-epidermal junction (DEJ), the "root" of skin's structure, for fundamental anti-aging.
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Laminin Mimetic Action
Directly mimics a key skin structural protein, a sophisticated and compelling mechanism.
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Clinically Proven Firming
Delivers measurable improvements in skin firmness, elasticity, and wrinkle reduction.
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Barrier-Supporting
Goes beyond traditional anti-aging by strengthening the skin's foundational barrier, improving overall health and resilience.
Storage
Store in a closed container at a dry place at room temperature.
Animal Testing
Not animal tested
Vegan
Does not contain animal-derived components
GMO
No data available