Fibronectin is a connective tissue, which is actually a glycoprotein; It’s a protein+carbohydrate molecule. Its role in our body is to firm skin and making the top layer or epithelial layer firm and strong. And the second function is it play an important role in the wound healing process. When you are get hurt, your body starts to firm a mesh sort of network and stops the flood flow. Fibronectin is also hydrolyzed one used as a humectant – an agent that draws and makes pools of water available for the skin.