Tetrapeptide-21

Product Overview

Tetrapeptide-21 is a synthetic peptide composed of four amino acids (Glycine–Glutamic Acid–Lysine–Glycine). It is designed to mimic fragments of collagen, promoting skin regeneration by stimulating the production of collagen, hyaluronic acid, and fibronectin. It is widely used in anti-aging skincare products for its ability to improve skin elasticity, smooth fine lines, and enhance hydration.

Product Usage

• Used in anti-aging creams, serums, and lotions.
• Recommended usage level is typically 0.5%–5%.
• Should be added to formulations at temperatures below 40°C to maintain stability.
• Suitable for oil-in-water and water-in-oil emulsions.

Product Ingredients

• Tetrapeptide-21 (Gly-Glu-Lys-Gly)
• Common solvents: Glycerin, Butylene Glycol, Water (Aqua)

Product Specifications

• Appearance and Color: Clear to slightly yellow liquid
• CAS Number: 960608-17-7
• Molecular Formula: C₁₅H₂₇N₅O₇
• Solubility: Soluble in water
• Storage: Store in a cool, dry place at 2–8°C; protect from light and heat