Name: Acetyl Hexapeptide-3 (Argireline) 200mg (Topical)
SKU: 4649
Availability: InStock

Acetyl Hexapeptide-3, commonly known as Argireline, is a synthetic cosmetic peptide widely used in topical skincare formulations. It is best known for its ability to reduce the appearance of expression lines by influencing facial muscle contraction at the skin’s surface. Because of this effect, it is often informally referred to as a “topical wrinkle-relaxing peptide,” though it is not a drug or injectable treatment.

Argireline is intended for topical use only and is not classified as a pharmaceutical product.

What Argireline Is

Argireline is a short chain of six amino acids designed to interact with components of the neuromuscular signaling process involved in facial expressions. It was developed to mimic a portion of proteins that regulate how nerve signals trigger muscle contraction.

Unlike peptides focused on collagen production or skin regeneration, Argireline targets the functional movement of facial muscles that contribute to dynamic wrinkles.

How Argireline Works

Argireline is believed to work by modulating the release of neurotransmitters involved in muscle contraction. By partially reducing the intensity of these signals, it may help soften repetitive muscle movements that cause expression lines over time.

Its action is localized and superficial, affecting the communication between nerves and muscles just beneath the skin. The effect is temporary and reversible, meaning continued application is required to maintain visible results.

Potential Areas of Interest

Argireline is commonly associated with cosmetic and skincare research related to:

Reduction in the appearance of fine lines and wrinkles
Softening of dynamic expression lines
Smoother-looking skin texture
Non-invasive anti-aging skincare formulations
Preventative skincare focused on expression-related aging

It is particularly popular in products targeting the forehead, crow’s feet, and areas around the mouth.

Biochemical Characteristics

Peptide Sequence: Ac-Glu-Glu-Met-Gln-Arg-Arg-NH₂ (Ac-EEMQRR-NH₂)
Molecular Formula: C₃₄H₆₀N₁₄O₁₂S
Molecular Weight: 888.99 g/mol

Argireline is a short-chain, acetylated hexapeptide designed to mimic a functional domain of SNAP-25. The peptide’s acetylated N-terminus enhances stability, while its charged residues facilitate competitive binding interactions with SNARE-associated proteins in biochemical assays.

Research Applications

1. SNARE Complex Assembly Studies

Argireline is employed in cell-free and cellular models to examine competitive inhibition of SNAP-25 participation in SNARE complex formation. These studies help elucidate the molecular requirements for vesicle docking and fusion.

2. Neurotransmitter Vesicle Dynamics

In neuronal and neurosecretory cell models, Argireline is used to investigate the modulation of calcium-dependent exocytosis and vesicle release kinetics by altering SNARE protein interactions.

3. Protein–Protein Interaction Assays

Due to its defined binding motif, Argireline serves as a probe for studying SNARE-associated protein interfaces, enabling characterization of binding affinity, conformational changes, and complex stability under controlled experimental conditions.

Pathway / Mechanistic Context

Mechanistically, Argireline interferes with the SNARE-mediated membrane fusion pathway by competing with endogenous SNAP-25 for binding sites within the SNARE complex. This competitive interaction alters vesicle priming and fusion efficiency, providing researchers with a controllable means of studying exocytotic regulation, synaptic signaling, and intracellular trafficking mechanisms at the molecular level.

Preclinical Research Summary

Preclinical research involving Argireline includes in-vitro studies using neuronal cell lines, fibroblast cultures, and reconstructed tissue models. These investigations focus on SNARE complex modulation, vesicle trafficking efficiency, and downstream signaling effects. All findings are confined to experimental laboratory systems and are used exclusively to advance understanding of vesicular transport biology.

Form & Analytical Testing

Argireline is supplied as a purified synthetic peptide suitable for analytical and experimental research workflows. Standard quality control methodologies such as high-performance liquid chromatography (HPLC) and mass spectrometry (MS) are used to confirm peptide identity, molecular weight, and purity prior to release.