EGF (Epidermal Growth Factor) is made up specifically of 53 blocks of protein that penetrate into the epidermal layer; binding to skin cells to accelerate the rate of skin reproduction forming thicker, healthier and younger-looking skin. EGF Epidermal Growth Factor also known as cytokines, are naturally occurring proteins capable of stimulating cellular proliferation and cellular differentiation. Our EGF creams (Ultimate Age-Proofing Complex and De-Aging Solution) offer THE highest % allowed in a topical formulation!)