Epidermal growth factor (EGF) is a small protein that stimulates cell growth and division.
It is involved in the regulation of normal cell growth and differentiation and plays a role in wound healing and tissue repair.
 
EGF is commonly used in some cosmetic products to help improve the appearance of skin and reduce signs of aging, such as wrinkles and fine lines. The idea is that applying EGF to the skin can help stimulate cell growth and promote the production of new skin cells, which can result in a more youthful-looking complexion.