Science
Mechanism of Action
This hexapeptide operates by temporarily modulating neurotransmitter release at neuromuscular junctions, specifically interfering with the formation of the SNARE complex. This action non-paralytically reduces the intensity of facial muscle contractions, thereby minimizing the formation and depth of dynamic wrinkles. Beyond its targeted effect on muscle contractions, research indicates its capacity to support overall skin elasticity, enhance hydration, and stimulate collagen production, leading to firmer, more refined skin texture.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Reduced wrinkle depth around the eyes by 17% after 15 days of use.
- 02 Reduced wrinkle depth by 16.26% after 28 days of use.
- 03 Improved periorbital rhytids (wrinkles around the eyes) by 27% after 30 days of twice-daily application in a semi-solid formulation.
- 04 Significantly decreased the anisotropy of face skin, indicating improved mechanical properties, after 2 and 4 weeks of daily application.
Transparency
Dusting Analysis
The Cosmetic Ingredient Review (CIR) Expert Panel indicates a maximum safe use concentration of 0.005% for the pure peptide in leave-on cosmetic formulations. However, clinical studies and product claims often refer to '5%' or '10%' concentrations. This apparent discrepancy typically arises because the peptide is supplied as a diluted stock solution (e.g., Argireline solution often contains approximately 0.05% active peptide). The cited percentages usually refer to the concentration of this *solution* within the final product, not the pure peptide itself. For instance, a 10% solution containing 0.05% active peptide results in a 0.005% final pure peptide concentration in the product, aligning with both safety guidelines and observed efficacy. Moumoujus precisely formulates to ensure optimal efficacy within established safety limits.
The Formula
Formulation
Stability
This peptide is highly soluble in water; however, for optimal stability and efficacy, aqueous solutions should be prepared fresh for immediate use, as prolonged storage (beyond one day) is not recommended. Its relatively large molecular weight (889 Da) and hydrophilic nature result in limited cutaneous absorption, necessitating advanced delivery systems for enhanced penetration.
Safety
Safety Profile
The CIR Expert Panel has deemed Acetyl Hexapeptide-8 (which encompasses SH-HEXAPEPTIDE-3) safe for use in cosmetics under current practices. It is characterized as naturally derived, non-irritating, and has shown no significant adverse effects in clinical assessments.
Your Skin
Skin Compatibility
Our Assessment
Verdict
SH-HEXAPEPTIDE-3 is a scientifically supported peptide highly valuable for addressing dynamic wrinkles, enhancing skin elasticity, and promoting a more youthful appearance across all skin types, with a favorable safety profile.
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References
Sources