SH-Polypeptide-1

Sh-Polypeptide-1 is a cell signaling protein also called Basic Fibroblast Growth Factor and is twin sister to Acidic Fibroblast Growth Factor. We can write here pretty much the same things as we did on aFGF: it is a mitogenic (= stimulates cell proliferation) ingredient that stimulates fibroblast cell growth and proliferation. According to manufacturer info, it also stimulates the synthesis of collagen and other extracellular-matrix (the gooey stuff between cells) components. 

Growth Factors and skincare is a big, complicated and controversial topic, so if you wanna know more, we have a more detailed explanation on Epidermal Growth Factor, the most common one used in skincare.