Growth factors are a class of peptides that regulate cell growth by binding to specific, high-affinity cell membrane receptors. Simply put, they are cytokines that allow cells to accelerate active value addition and differentiation, and they allow cells to grow rapidly. Growth factors can be clinically applied in cosmetic, wound healing and cellular tissue repair. From the physiological point of view, the normal role of growth factors are divided into three kinds: 1, epidermal growth factor: can promote the growth of the epidermis, it can stimulate the division and growth of basal cells, so as to restore the epidermis. 2, fibroblast growth factor, can promote the growth of collagen, which helps the recovery of the dermis. 3. Vascular endothelial growth factor, which is the main stimulating substance for the growth of the vascular system, is generally believed to promote the growth of blood vessels and lymphatic vessels. It is important to emphasize the existing indications and can only be used externally, not for intra-tissue filling. It is not injected into the human body by regular hospitals, and the state explicitly prohibits the injection of growth factors, especially for facial injections. Many beauty salons are desperate to get high profits, and customers are desperate to get a beautiful face, which can easily lead to facial deformity and disfigurement, and hard nodules. If you need to use growth factors, you must go to a regular hospital and be guided by a professional doctor. Although the growth factor has the effect of stimulating rapid cell growth, its application needs to be done in the right way, and can only be used externally, please remember, do not use it illegally, resulting in serious consequences.