Epidermal growth factor (EGF) is a protein that plays a crucial role in cell growth, proliferation, and differentiation. It binds to specific receptors on the surface of cells, triggering a series of biological processes that promote healing and tissue regeneration. EGF is naturally found in various tissues and is also produced in laboratories for medical and cosmetic applications. In medicine, EGF is used in treatments for wounds and burns, as it can accelerate healing. In the cosmetic industry, it is often included in skincare products to enhance skin repair and reduce signs of aging. Its effectiveness has made it a significant focus in research related to cell biology and dermatology.