
Acetyl Tetrapeptide-5 is a synthetic acetylated tetrapeptide widely used in skincare, especially in eye-care formulations. It is best known for helping reduce the appearance of under-eye puffiness, dark circles (vascular-related), and fluid retention.
It is primarily classified as a decongesting and microcirculation-support peptide, making it a common ingredient in eye creams and anti-fatigue skincare products.



Product Name: Acetyl Tetrapeptide-5
CAS No.: 820959-17-9
Assay: ≥98%
Molecular Weight: 492.5g/mol
Molecular Formula: C20H28N8O7
Appearance: White Powder
Storage Condition: Sealed, stored at -20°C for long-term storage
Package Quantity: 1g,10g,100g or according to the customer’s requests
Packing material: Aluminium foil bag or plastic bottle

Reduces fine lines and wrinkles
Tightens loose skin
Smooths rough skin
Boosts skin hydration


