Growth factors are present throughout the body, telling cells to heal and grow. In our skin, growth factors work to repair damaged skin, produce new supplies of collagen, and help improve elasticity and skin firmness. As happens with collagen, our body’s production of growth factors slows with aging. This hinders our skin’s ability to heal and regenerate, contributing to the aging and deterioration of our skin.  When placed in a serum applied to the skin, growth factors activate different mechanisms that allow the skin to repair itself. Growth factors, in particular, turn on new collagen and elastin production. This improves the skin’s thickness, firmness, and elasticity, and this reduces the appearance of fine lines and wrinkles and improves the skin’s tone and texture.