Product Name: Decapeptide-4 INCI Name: DECAPEPTIDE-4 Appearance: White powder Purity: 99% Standard: Enterprise Standard Supplier: ZhenYiBio As a messenger peptide, decapeptide-4 stimulates the synthesis and development of collagen (type â? , type â?¡, type â?£) and elastin in the dermis of the skin. Decapeptide-4 can penetrate the dermis to increase collagen. Rebuild to the outside to reverse the process of skin aging; stimulate the proliferation of collagen, elastic fibers and hyaluronic acid, increase the skin's moisture content and moisture retention, increase skin thickness and reduce fine lines.