In short
Argireline (acetyl hexapeptide-8) is a cosmetic peptide marketed for expression lines. Studies are small and usually test whole multi-ingredient products.
Also known asacetyl hexapeptide-8
CategorySkin & cosmetic
Canada statusCosmetic / food ingredient
Human evidence Limited: small product studies
Last reviewedNovember 10, 2026
How strong is the human evidence?
- Cell & animal
- Small human studies
- Some randomized trials
- Large randomized trials
What is Argireline and Other Cosmetic Peptides?
Acetyl hexapeptide-8 is a synthetic peptide used in serums for expression lines. Other common cosmetic peptides include Matrixyl (palmitoyl pentapeptide-4), Matrixyl 3000 and copper tripeptide-1.
Is Argireline and Other Cosmetic Peptides legal in Canada?
Sold legally as a cosmetic ingredient. Products are classified by intended purpose and claims; drug-type claims (treating a disease) take a product out of the cosmetic category.
What the research shows
- A 2026 study of a serum combining acetyl hexapeptide-8 with other actives reported improved wrinkle scores over 12 weeks (Zhu et al.), but it tested a multi-ingredient product.
- A 2026 meta-analysis of 19 RCTs of oral and topical peptides found a modest pooled effect on wrinkles, driven mostly by oral polypeptides (Nukaly et al.).
What it doesn't show
- Topical argireline has not been shown to match injected botulinum toxin.
Common questions
Does argireline work like Botox?
It is marketed that way, but evidence is limited to small cosmetic studies.
Argireline vs Matrixyl?
Argireline is aimed at expression lines; Matrixyl is a collagen-signalling peptide. Both have modest evidence.
Sources
- Zhu M et al. Serum containing acetyl hexapeptide-8: ex vivo and clinical studies. Int J Cosmet Sci 2026
- Nukaly HY et al. Oral and topical peptides for skin aging: SR and meta-analysis of RCTs. Front Med 2026
- Health Canada — Classification of products at the cosmetic-drug interface
Related
Matrixyl (Palmitoyl Pentapeptide-4)A cosmetic signal peptide designed for creams and serums. One 12-week split-face trial found modest wrinkle…Cosmetic / food ingredient
GHK-Cu and Copper PeptidesA natural copper-binding tripeptide used in skin and hair-care products. As a cosmetic cream it's an ordinary…Topical cosmetic: sold legally · Injectable: not authorized