TGF-β1 is one of the many growth factors in the body collectively referred to as "cytokines." Cytokines are a large and diverse family of small protein molecules used by cells in the body for intracellular communication and regulation. TGF-β1 is specifically believed to help maintain the appearance of youthful, healthy skin. Collective scientific opinion appears to view TGF-β1 as a major tool in helping to improve the visible signs of aging.
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