Science
Mechanism of Action
This peptide operates by regulating the activity of Proteinase-activated receptor 2 (PAR-2), which is present on epidermal keratinocytes and skin mast cells and plays a critical role in inflammatory signaling. By modulating PAR-2, Acetyl Hexapeptide-49 effectively calms neurogenic inflammation, leading to a notable reduction in pro-inflammatory cytokines such as IL-6 and IL-8. This action helps alleviate common sensitive skin sensations like itching, stinging, and tingling. Additionally, it promotes cellular proliferation and differentiation, which are vital processes for repairing the skin barrier and restoring tissue integrity, and contributes to skin hydration by minimizing transdermal moisture loss.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Demonstrated a substantial reduction in pro-inflammatory cytokine production, decreasing IL-6 by 69.6% and IL-8 by 71.5% in primary human epidermal keratinocytes challenged with a PAR-2 agonist.
- 02 Reduced IL-8 expression by 58.2% in a reconstructed epidermis model after exposure to common cosmetic allergens like hexyl cinnamal and farnesol, indicating significant anti-inflammatory action.
- 03 Formulations containing Acetyl Hexapeptide-49 (e.g., Delisens) were shown to increase skin hydration by 34% over a one-week period.
- 04 Supports fundamental processes of cell proliferation and differentiation, contributing to the repair of the skin barrier and the restoration of overall tissue integrity.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
To preserve the integrity and efficacy of the peptide, moderate processing temperatures are recommended.
Safety
Safety Profile
Acetyl Hexapeptide-49 is generally regarded as safe for topical cosmetic application. Adverse effects such as irritation, redness, or allergic reactions are infrequent, although patch testing is always advisable. It has demonstrated favorable skin compatibility in Human Repeat Insult Patch Tests (HRIPT) and no ocular irritation in Hen's Egg Test-Chorioallantoic Membrane (HET-CAM) tests, indicating it is not a sensitizer. Cytotoxic effects were observed at high concentrations (IC50 ~0.1%), significantly exceeding typical recommended dosages by 80 to 200 times. Information regarding its topical use during pregnancy and breastfeeding is limited, and consultation with a healthcare professional is advised.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Acetyl Hexapeptide-49 is a valuable peptide for calming neurogenic inflammation, supporting robust skin barrier repair, and enhancing hydration, making it highly beneficial for sensitive, irritated, and compromised skin.
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