Science
Mechanism of Action
SH-Polypeptide-1, a synthetic mimetic of Basic Fibroblast Growth Factor (bFGF), critically stimulates fibroblast proliferation, increasing the synthesis of collagen and elastin to enhance skin elasticity and reduce wrinkle depth. It also fosters microcirculation by promoting blood vessel development, ensuring optimal nutrient delivery to epidermal cells. This peptide can also interact synergistically with Epidermal Growth Factor (EGF) and Insulin-like Growth Factor-1 (IGF-1) to boost hyaluronic acid production, thereby improving skin hydration. SH-Decapeptide-1, interpreted as Epidermal Growth Factor (EGF), complements this action by directly stimulating epidermal cell proliferation, accelerating skin healing, and enhancing surface renewal. Both peptides can also influence hair growth and melanocyte migration for potential repigmentation.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Given their complex nature and high value as growth factor mimetics, these peptides are typically incorporated into premium formulations where their biological activity is a core claim, making intentional 'dusting' (inclusion at ineffective trace amounts) less probable for product differentiation.
The Formula
Formulation
Stability
As relatively large peptide molecules, both SH-Polypeptide-1 and SH-Decapeptide-1 inherently possess low stability and a short half-life. To optimize their penetration and efficacy in topical applications, they are frequently stabilized and delivered using advanced encapsulation systems, such as liposomes or PLGA-coated nanoparticles.
Synergies
- SH-Polypeptide-1 interacts with EGF (SH-Decapeptide-1) and IGF-1 to enhance hyaluronic acid synthesis.
- SH-Decapeptide-1 (EGF) and SH-Polypeptide-1 (bFGF) synergistically promote cell proliferation and tissue repair.
Safety
Safety Profile
Topical application of sh-Polypeptide-1 has demonstrated no significant irritation or general toxicity. However, caution is advised as bFGF mimetics (like sh-Polypeptide-1) have been associated with melanoma progression. SH-Decapeptide-1 (EGF) is authorized for cosmetic use in various concentrations, but its long-term risks are currently unknown. The Cosmetic Ingredient Review (CIR) Expert Panel has generally concluded that 'Tissue-Derived Proteins and Peptides' are safe under present practices of use and concentration.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This dual growth factor complex holds significant promise for advanced skin rejuvenation, repair, and anti-aging due to its multifaceted cellular actions, making it a valuable addition to precision skincare formulations, albeit with certain safety considerations that warrant ongoing research.
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