EGF vs Palmitoyl Pentapeptide-4

Binds EGFR (EGF receptor / ErbB1), activating RAS/MAPK and PI3K/Akt signaling cascades. Promotes keratinocyte and fibroblast proliferation, accelerates wound re-epithelialization, and stimulates collagen and hyaluronic acid production.

A 53-amino acid protein that potently stimulates cell proliferation and differentiation in epithelial and fibroblast cells. Widely used in aesthetic medicine for wound healing, skin regeneration, and post-procedure recovery. One of the most established growth factors in cosmetic dermatology.

Binds TGF-β receptors on fibroblasts, upregulating collagen I, III, fibronectin, and hyaluronic acid synthesis. The palmitoyl chain provides lipophilicity for improved skin penetration into the dermis.

A lipopeptide consisting of a palmitoyl fatty acid attached to the pentapeptide KTTKS. A key component of Matrixyl 3000 formulations. Stimulates collagen and extracellular matrix production more potently than palmitoyl tripeptide-1 (Matrixyl) alone, particularly for deep wrinkle reduction.