Peptide Graded

Acetyl hexapeptide-8

Is Acetyl hexapeptide-8 safe?

No irritation in small studies; 2025 CIR safety review

BSome human evidenceCosmetic ingredientas of 2026-10-26

In the studies that exist, Argireline is well tolerated. The 60-person randomized trial, the 19-person split-face study and the 26-patient series reported no allergic reactions or irritation. The original developers reported no oral toxicity or primary irritation in animals. 781214

In 2025 the Cosmetic Ingredient Review Expert Panel concluded the ingredient is safe in cosmetics at the concentrations now reported in use, up to 0.005%. It said the data were not enough to judge safety at higher concentrations. Many products and most clinical studies used far higher concentrations, so that gap matters. Chemical analysis of commercial products has also found the peptide partly oxidised at its methionine residue. That raises a shelf-stability question that no clinical study has tested. 51113

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More on Acetyl hexapeptide-8

Citations

  1. Am J Clin Dermatol 2013: Argireline mechanism via SNAP-25 (DOI) doi.org
  2. PMC 2025 review: cosmetic peptides and the efficacy debate pmc.ncbi.nlm.nih.gov
  3. FDA: how cosmetics are regulated but not approved fda.gov
  4. FDA: is it a cosmetic, a drug, or both? fda.gov
  5. Cosmetic Ingredient Review: acetyl hexapeptide-8 safety review (technical report) cir-safety.org
  6. DailyMed: botulinum toxin label, SNAP-25 cleavage mechanism dailymed.nlm.nih.gov
  7. Wang 2013, Am J Clin Dermatol: randomized placebo-controlled trial of Argireline in Chinese subjects pubmed.ncbi.nlm.nih.gov
  8. GMS Interdiscip Plast Reconstr Surg 2023: Argireline in a hyaluronic acid serum, Visia analysis pubmed.ncbi.nlm.nih.gov
  9. Scientific Reports 2018: skin permeation of modified anti-wrinkle peptides pubmed.ncbi.nlm.nih.gov
  10. Kraeling 2015, Cutan Ocul Toxicol: in vitro skin penetration of acetyl hexapeptide-8 pubmed.ncbi.nlm.nih.gov
  11. Int J Toxicol 2025: CIR safety assessment of acetyl hexapeptide-8 amide pubmed.ncbi.nlm.nih.gov
  12. Blanes-Mira 2002, Int J Cosmet Sci: a synthetic hexapeptide with antiwrinkle activity pubmed.ncbi.nlm.nih.gov
  13. Chem Biodivers 2021: Argireline detection and oxidation in cosmetics pubmed.ncbi.nlm.nih.gov
  14. Clin Ter 2020: acetyl hexapeptide-8 for scar and wrinkle camouflage, 26-patient series pubmed.ncbi.nlm.nih.gov
  15. Microbiol Spectr 2022: pentapeptide-4 (Matrixyl) conjugates pubmed.ncbi.nlm.nih.gov
  16. Robinson 2005, Int J Cosmet Sci: palmitoyl pentapeptide in photoaged skin pubmed.ncbi.nlm.nih.gov
  17. Eur J Pharm Sci 2015: delivery of acetyl hexapeptide-8 from different emulsions pubmed.ncbi.nlm.nih.gov

Reference information only, not medical advice. Drawn from the Acetyl hexapeptide-8 article, fact-checked against the cited sources. No dosing anywhere on this site.