Argireline (Acetyl hexapeptide-3) is composed of chains of amino acids known as peptides. Argireline significantly inhibits Ca2+ dependent neurotransmitter release (acetylcholine) at the neuromuscular junction. Argireline has antiwrinkle and anti-aging activity[1][2][3].

The incubation of Argireline solution in different concentrations with human embryonic kidney HEK-293 (IC50 of 34.862 μM) and neuroblastoma IMR-32 cells (IC50 of 68.458 μM)) for 48 h have dose dependent antiproliferative effect. Argireline solution incubated in different concentrations with HSF has a dose-dependent antiproliferative effect on those cells. Argireline in low concentration do not affect cell proliferation[2].

Argireline was administered topically to elderly mice twice daily for six weeks, resulting in notable histological improvements in skin tissue. Specifically, the quantity of type I collagen fibers increased significantly (P < 0.01), and the amount of type III collagen fibers decreased (P < 0.05). This demonstrates Argireline's capability to enhance the histological architecture of skin tissue and restore aged skin[3].