Argireline is a synthetic peptide that is commonly used in skincare and cosmetic products due to its potential anti-aging properties. It is designed to mimic a fragment of the SNAP-25 protein, which is a component of the complex required for neurotransmitter release at the neuromuscular junction. By mimicking this fragment, Argireline is thought to inhibit the release of neurotransmitters that cause muscle contraction, leading to a reduction in facial tension and, consequently, a decrease in the appearance of wrinkles and fine lines.